view SpecLibSearcher.xml @ 9:2d6e49acbb56 draft default tip

planemo upload for repository https://github.com/galaxyproteomics/tools-galaxyp/tree/master/tools/openms commit 5c080b1e2b99f1c88f4557e9fec8c45c9d23b906
author galaxyp
date Fri, 14 Jun 2024 21:35:13 +0000
parents 3aa3b656e624
children
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<!--This is a configuration file for the integration of a tools into Galaxy (https://galaxyproject.org/). This file was automatically generated using CTDConverter.-->
<!--Proposed Tool Section: [Identification of Proteins/Peptides (SearchEngines)]-->
<tool id="SpecLibSearcher" name="SpecLibSearcher" version="@TOOL_VERSION@+galaxy@VERSION_SUFFIX@" profile="21.05">
  <description>Identifies peptide MS/MS spectra by spectral matching with a searchable spectral library</description>
  <macros>
    <token name="@EXECUTABLE@">SpecLibSearcher</token>
    <import>macros.xml</import>
  </macros>
  <expand macro="requirements"/>
  <expand macro="stdio"/>
  <command detect_errors="exit_code"><![CDATA[@QUOTE_FOO@
@EXT_FOO@
#import re

## Preprocessing
mkdir in_cond.in &&
#if $in_cond.in_select == "no"
mkdir ${' '.join(["'in_cond.in/%s'" % (i) for i, f in enumerate($in_cond.in) if f])} && 
${' '.join(["cp '%s' 'in_cond.in/%s/%s.%s' && " % (f, i, re.sub('[^\w\-_]', '_', f.element_identifier), $gxy2omsext(f.ext)) for i, f in enumerate($in_cond.in) if f])}
#else
cp '$in_cond.in' 'in_cond.in/${re.sub("[^\w\-_]", "_", $in_cond.in.element_identifier)}.$gxy2omsext($in_cond.in.ext)' &&
#end if
mkdir lib &&
cp '$lib' 'lib/${re.sub("[^\w\-_]", "_", $lib.element_identifier)}.$gxy2omsext($lib.ext)' &&
mkdir out &&
mkdir ${' '.join(["'out/%s'" % (i) for i, f in enumerate($in_cond.in) if f])} && 

## Main program call

set -o pipefail &&
@EXECUTABLE@ -write_ctd ./ &&
python3 '$__tool_directory__/fill_ctd.py' '@EXECUTABLE@.ctd' '$args_json' '$hardcoded_json' &&
@EXECUTABLE@ -ini @EXECUTABLE@.ctd
-in
#if $in_cond.in_select == "no"
${' '.join(["'in_cond.in/%s/%s.%s'"%(i, re.sub('[^\w\-_]', '_', f.element_identifier), $gxy2omsext(f.ext)) for i, f in enumerate($in_cond.in) if f])}
#else
'in_cond.in/${re.sub("[^\w\-_]", "_", $in_cond.in.element_identifier)}.$gxy2omsext($in_cond.in.ext)'
#end if
-lib
'lib/${re.sub("[^\w\-_]", "_", $lib.element_identifier)}.$gxy2omsext($lib.ext)'
-out
${' '.join(["'out/%s/%s.%s'"%(i, re.sub('[^\w\-_]', '_', f.element_identifier), $gxy2omsext("idxml")) for i, f in enumerate($in_cond.in) if f])}

## Postprocessing
${' '.join(["&& mv -n 'out/%(bn)s/%(id)s.%(gext)s' 'out/%(bn)s/%(id)s'"%{"bn": i, "id": re.sub('[^\w\-_]', '_', f.element_identifier), "gext": $gxy2omsext("idxml")} for i, f in enumerate($in_cond.in) if f])}
#if "ctd_out_FLAG" in $OPTIONAL_OUTPUTS
  && mv '@EXECUTABLE@.ctd' '$ctd_out'
#end if]]></command>
  <configfiles>
    <inputs name="args_json" data_style="paths"/>
    <configfile name="hardcoded_json"><![CDATA[{"log": "log.txt", "threads": "\${GALAXY_SLOTS:-1}", "no_progress": true}]]></configfile>
  </configfiles>
  <inputs>
    <conditional name="in_cond">
      <param name="in_select" type="select" label="Run tool in batch mode for -in">
        <option value="no">No: process all datasets jointly</option>
        <option value="yes">Yes: process each dataset in an independent job</option>
      </param>
      <when value="no">
        <param argument="-in" type="data" format="mzml" multiple="true" label="Input files" help=" select mzml data sets(s)"/>
      </when>
      <when value="yes">
        <param argument="-in" type="data" format="mzml" label="Input files" help=" select mzml data sets(s)"/>
      </when>
    </conditional>
    <param argument="-lib" type="data" format="msp" label="searchable spectral library (MSP format)" help=" select msp data sets(s)"/>
    <param argument="-compare_function" type="select" label="function for similarity comparison" help="">
      <option value="PeakAlignment">PeakAlignment</option>
      <option value="SpectrumAlignmentScore">SpectrumAlignmentScore</option>
      <option value="SpectrumCheapDPCorr">SpectrumCheapDPCorr</option>
      <option value="SpectrumPrecursorComparator">SpectrumPrecursorComparator</option>
      <option value="SteinScottImproveScore">SteinScottImproveScore</option>
      <option value="ZhangSimilarityScore" selected="true">ZhangSimilarityScore</option>
      <expand macro="list_string_san" name="compare_function"/>
    </param>
    <section name="precursor" title="Precursor (Parent Ion) Options" help="" expanded="false">
      <param name="mass_tolerance" argument="-precursor:mass_tolerance" type="float" value="10.0" label="Width of precursor mass tolerance window" help=""/>
      <param name="mass_tolerance_unit" argument="-precursor:mass_tolerance_unit" type="select" label="Unit of precursor mass tolerance" help="">
        <option value="ppm" selected="true">ppm</option>
        <option value="Da">Da</option>
        <expand macro="list_string_san" name="mass_tolerance_unit"/>
      </param>
      <param name="min_charge" argument="-precursor:min_charge" type="integer" value="2" label="Minimum precursor charge to be considered" help=""/>
      <param name="max_charge" argument="-precursor:max_charge" type="integer" value="5" label="Maximum precursor charge to be considered" help=""/>
      <param name="isotopes" argument="-precursor:isotopes" type="text" value="0 1" label="Corrects for mono-isotopic peak misassignments" help="(E.g.: 1 = prec. may be misassigned to first isotopic peak) (space separated list, in order to allow for spaces in list items surround them by single quotes)">
        <expand macro="list_integer_valsan" name="isotopes"/>
      </param>
    </section>
    <section name="fragment" title="Fragments (Product Ion) Options" help="" expanded="false">
      <param name="mass_tolerance" argument="-fragment:mass_tolerance" type="float" value="10.0" label="Fragment mass tolerance" help=""/>
    </section>
    <section name="report" title="Reporting Options" help="" expanded="false">
      <param name="top_hits" argument="-report:top_hits" type="integer" value="10" label="Maximum number of top scoring hits per spectrum that are reported" help=""/>
    </section>
    <section name="filter" title="Filtering options" help="Most are especially useful when the query spectra are raw" expanded="false">
      <param name="remove_peaks_below_threshold" argument="-filter:remove_peaks_below_threshold" type="float" value="2.01" label="All peaks of a query spectrum with intensities below &lt;threshold&gt; will be zeroed" help=""/>
      <param name="min_peaks" argument="-filter:min_peaks" type="integer" value="5" label="required minimum number of peaks for a query spectrum" help=""/>
      <param name="max_peaks" argument="-filter:max_peaks" type="integer" value="150" label="Use only the top &lt;number&gt; of peaks" help=""/>
      <param name="cut_peaks_below" argument="-filter:cut_peaks_below" type="integer" value="1000" label="Remove all peaks which are lower than 1/&lt;number&gt; of the highest peaks" help="Default equals all peaks which are lower than 0.001 of the maximum intensity peak"/>
    </section>
    <section name="modifications" title="Modifications Options" help="" expanded="false">
      <param name="fixed" argument="-modifications:fixed" type="select" multiple="true" optional="true" label="Fixed modifications, specified using UniMod (www.unimod.org) terms" help="e.g. 'Carbamidomethyl (C)'">
        <option value="15N-oxobutanoic (N-term C)">15N-oxobutanoic (N-term C)</option>
        <option value="15N-oxobutanoic (Protein N-term S)">15N-oxobutanoic (Protein N-term S)</option>
        <option value="15N-oxobutanoic (Protein N-term T)">15N-oxobutanoic (Protein N-term T)</option>
        <option value="2-dimethylsuccinyl (C)">2-dimethylsuccinyl (C)</option>
        <option value="2-monomethylsuccinyl (C)">2-monomethylsuccinyl (C)</option>
        <option value="2-nitrobenzyl (Y)">2-nitrobenzyl (Y)</option>
        <option value="2-succinyl (C)">2-succinyl (C)</option>
        <option value="2HPG (R)">2HPG (R)</option>
        <option value="3-deoxyglucosone (R)">3-deoxyglucosone (R)</option>
        <option value="3-hydroxybenzyl-phosphate (K)">3-hydroxybenzyl-phosphate (K)</option>
        <option value="3-hydroxybenzyl-phosphate (S)">3-hydroxybenzyl-phosphate (S)</option>
        <option value="3-hydroxybenzyl-phosphate (T)">3-hydroxybenzyl-phosphate (T)</option>
        <option value="3-hydroxybenzyl-phosphate (Y)">3-hydroxybenzyl-phosphate (Y)</option>
        <option value="3-phosphoglyceryl (K)">3-phosphoglyceryl (K)</option>
        <option value="3sulfo (N-term)">3sulfo (N-term)</option>
        <option value="4-ONE (C)">4-ONE (C)</option>
        <option value="4-ONE (H)">4-ONE (H)</option>
        <option value="4-ONE (K)">4-ONE (K)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (C)">4-ONE+Delta:H(-2)O(-1) (C)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (H)">4-ONE+Delta:H(-2)O(-1) (H)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (K)">4-ONE+Delta:H(-2)O(-1) (K)</option>
        <option value="4AcAllylGal (C)">4AcAllylGal (C)</option>
        <option value="a-type-ion (C-term)">a-type-ion (C-term)</option>
        <option value="AccQTag (K)">AccQTag (K)</option>
        <option value="AccQTag (N-term)">AccQTag (N-term)</option>
        <option value="Acetyl (C)">Acetyl (C)</option>
        <option value="Acetyl (H)">Acetyl (H)</option>
        <option value="Acetyl (K)">Acetyl (K)</option>
        <option value="Acetyl (N-term)">Acetyl (N-term)</option>
        <option value="Acetyl (Protein N-term)">Acetyl (Protein N-term)</option>
        <option value="Acetyl (R)">Acetyl (R)</option>
        <option value="Acetyl (S)">Acetyl (S)</option>
        <option value="Acetyl (T)">Acetyl (T)</option>
        <option value="Acetyl (Y)">Acetyl (Y)</option>
        <option value="Acetyl:13C(2) (K)">Acetyl:13C(2) (K)</option>
        <option value="Acetyl:13C(2) (Protein N-term)">Acetyl:13C(2) (Protein N-term)</option>
        <option value="Acetyl:2H(3) (H)">Acetyl:2H(3) (H)</option>
        <option value="Acetyl:2H(3) (K)">Acetyl:2H(3) (K)</option>
        <option value="Acetyl:2H(3) (N-term)">Acetyl:2H(3) (N-term)</option>
        <option value="Acetyl:2H(3) (Protein N-term)">Acetyl:2H(3) (Protein N-term)</option>
        <option value="Acetyl:2H(3) (S)">Acetyl:2H(3) (S)</option>
        <option value="Acetyl:2H(3) (T)">Acetyl:2H(3) (T)</option>
        <option value="Acetyl:2H(3) (Y)">Acetyl:2H(3) (Y)</option>
        <option value="Acetyldeoxyhypusine (K)">Acetyldeoxyhypusine (K)</option>
        <option value="Acetylhypusine (K)">Acetylhypusine (K)</option>
        <option value="ADP-Ribosyl (C)">ADP-Ribosyl (C)</option>
        <option value="ADP-Ribosyl (D)">ADP-Ribosyl (D)</option>
        <option value="ADP-Ribosyl (E)">ADP-Ribosyl (E)</option>
        <option value="ADP-Ribosyl (K)">ADP-Ribosyl (K)</option>
        <option value="ADP-Ribosyl (N)">ADP-Ribosyl (N)</option>
        <option value="ADP-Ribosyl (R)">ADP-Ribosyl (R)</option>
        <option value="ADP-Ribosyl (S)">ADP-Ribosyl (S)</option>
        <option value="ADP-Ribosyl (T)">ADP-Ribosyl (T)</option>
        <option value="AEBS (H)">AEBS (H)</option>
        <option value="AEBS (K)">AEBS (K)</option>
        <option value="AEBS (Protein N-term)">AEBS (Protein N-term)</option>
        <option value="AEBS (S)">AEBS (S)</option>
        <option value="AEBS (Y)">AEBS (Y)</option>
        <option value="AEC-MAEC (S)">AEC-MAEC (S)</option>
        <option value="AEC-MAEC (T)">AEC-MAEC (T)</option>
        <option value="AEC-MAEC:2H(4) (S)">AEC-MAEC:2H(4) (S)</option>
        <option value="AEC-MAEC:2H(4) (T)">AEC-MAEC:2H(4) (T)</option>
        <option value="AFB1_Dialdehyde (K)">AFB1_Dialdehyde (K)</option>
        <option value="AHA-Alkyne (M)">AHA-Alkyne (M)</option>
        <option value="AHA-Alkyne-KDDDD (M)">AHA-Alkyne-KDDDD (M)</option>
        <option value="AHA-SS (M)">AHA-SS (M)</option>
        <option value="AHA-SS_CAM (M)">AHA-SS_CAM (M)</option>
        <option value="Ahx2+Hsl (C-term)">Ahx2+Hsl (C-term)</option>
        <option value="Ala-&gt;Arg (A)">Ala-&gt;Arg (A)</option>
        <option value="Ala-&gt;Asn (A)">Ala-&gt;Asn (A)</option>
        <option value="Ala-&gt;Asp (A)">Ala-&gt;Asp (A)</option>
        <option value="Ala-&gt;Cys (A)">Ala-&gt;Cys (A)</option>
        <option value="Ala-&gt;Gln (A)">Ala-&gt;Gln (A)</option>
        <option value="Ala-&gt;Glu (A)">Ala-&gt;Glu (A)</option>
        <option value="Ala-&gt;Gly (A)">Ala-&gt;Gly (A)</option>
        <option value="Ala-&gt;His (A)">Ala-&gt;His (A)</option>
        <option value="Ala-&gt;Lys (A)">Ala-&gt;Lys (A)</option>
        <option value="Ala-&gt;Met (A)">Ala-&gt;Met (A)</option>
        <option value="Ala-&gt;Phe (A)">Ala-&gt;Phe (A)</option>
        <option value="Ala-&gt;Pro (A)">Ala-&gt;Pro (A)</option>
        <option value="Ala-&gt;Ser (A)">Ala-&gt;Ser (A)</option>
        <option value="Ala-&gt;Thr (A)">Ala-&gt;Thr (A)</option>
        <option value="Ala-&gt;Trp (A)">Ala-&gt;Trp (A)</option>
        <option value="Ala-&gt;Tyr (A)">Ala-&gt;Tyr (A)</option>
        <option value="Ala-&gt;Val (A)">Ala-&gt;Val (A)</option>
        <option value="Ala-&gt;Xle (A)">Ala-&gt;Xle (A)</option>
        <option value="Amidated (C-term)">Amidated (C-term)</option>
        <option value="Amidated (Protein C-term)">Amidated (Protein C-term)</option>
        <option value="Amidine (K)">Amidine (K)</option>
        <option value="Amidine (N-term)">Amidine (N-term)</option>
        <option value="Amidino (C)">Amidino (C)</option>
        <option value="Amino (Y)">Amino (Y)</option>
        <option value="Ammonia-loss (N)">Ammonia-loss (N)</option>
        <option value="Ammonia-loss (N-term C)">Ammonia-loss (N-term C)</option>
        <option value="Ammonia-loss (Protein N-term S)">Ammonia-loss (Protein N-term S)</option>
        <option value="Ammonia-loss (Protein N-term T)">Ammonia-loss (Protein N-term T)</option>
        <option value="Ammonium (C-term)">Ammonium (C-term)</option>
        <option value="Ammonium (D)">Ammonium (D)</option>
        <option value="Ammonium (E)">Ammonium (E)</option>
        <option value="AMTzHexNAc2 (N)">AMTzHexNAc2 (N)</option>
        <option value="AMTzHexNAc2 (S)">AMTzHexNAc2 (S)</option>
        <option value="AMTzHexNAc2 (T)">AMTzHexNAc2 (T)</option>
        <option value="Andro-H2O (C)">Andro-H2O (C)</option>
        <option value="Archaeol (C)">Archaeol (C)</option>
        <option value="Arg (N-term)">Arg (N-term)</option>
        <option value="Arg-&gt;Ala (R)">Arg-&gt;Ala (R)</option>
        <option value="Arg-&gt;Asn (R)">Arg-&gt;Asn (R)</option>
        <option value="Arg-&gt;Asp (R)">Arg-&gt;Asp (R)</option>
        <option value="Arg-&gt;Cys (R)">Arg-&gt;Cys (R)</option>
        <option value="Arg-&gt;Gln (R)">Arg-&gt;Gln (R)</option>
        <option value="Arg-&gt;Glu (R)">Arg-&gt;Glu (R)</option>
        <option value="Arg-&gt;GluSA (R)">Arg-&gt;GluSA (R)</option>
        <option value="Arg-&gt;Gly (R)">Arg-&gt;Gly (R)</option>
        <option value="Arg-&gt;His (R)">Arg-&gt;His (R)</option>
        <option value="Arg-&gt;Lys (R)">Arg-&gt;Lys (R)</option>
        <option value="Arg-&gt;Met (R)">Arg-&gt;Met (R)</option>
        <option value="Arg-&gt;Npo (R)">Arg-&gt;Npo (R)</option>
        <option value="Arg-&gt;Orn (R)">Arg-&gt;Orn (R)</option>
        <option value="Arg-&gt;Phe (R)">Arg-&gt;Phe (R)</option>
        <option value="Arg-&gt;Pro (R)">Arg-&gt;Pro (R)</option>
        <option value="Arg-&gt;Ser (R)">Arg-&gt;Ser (R)</option>
        <option value="Arg-&gt;Thr (R)">Arg-&gt;Thr (R)</option>
        <option value="Arg-&gt;Trp (R)">Arg-&gt;Trp (R)</option>
        <option value="Arg-&gt;Tyr (R)">Arg-&gt;Tyr (R)</option>
        <option value="Arg-&gt;Val (R)">Arg-&gt;Val (R)</option>
        <option value="Arg-&gt;Xle (R)">Arg-&gt;Xle (R)</option>
        <option value="Arg-loss (C-term R)">Arg-loss (C-term R)</option>
        <option value="Arg2PG (R)">Arg2PG (R)</option>
        <option value="Argbiotinhydrazide (R)">Argbiotinhydrazide (R)</option>
        <option value="AROD (C)">AROD (C)</option>
        <option value="Asn-&gt;Ala (N)">Asn-&gt;Ala (N)</option>
        <option value="Asn-&gt;Arg (N)">Asn-&gt;Arg (N)</option>
        <option value="Asn-&gt;Asp (N)">Asn-&gt;Asp (N)</option>
        <option value="Asn-&gt;Cys (N)">Asn-&gt;Cys (N)</option>
        <option value="Asn-&gt;Gln (N)">Asn-&gt;Gln (N)</option>
        <option value="Asn-&gt;Glu (N)">Asn-&gt;Glu (N)</option>
        <option value="Asn-&gt;Gly (N)">Asn-&gt;Gly (N)</option>
        <option value="Asn-&gt;His (N)">Asn-&gt;His (N)</option>
        <option value="Asn-&gt;Lys (N)">Asn-&gt;Lys (N)</option>
        <option value="Asn-&gt;Met (N)">Asn-&gt;Met (N)</option>
        <option value="Asn-&gt;Phe (N)">Asn-&gt;Phe (N)</option>
        <option value="Asn-&gt;Pro (N)">Asn-&gt;Pro (N)</option>
        <option value="Asn-&gt;Ser (N)">Asn-&gt;Ser (N)</option>
        <option value="Asn-&gt;Thr (N)">Asn-&gt;Thr (N)</option>
        <option value="Asn-&gt;Trp (N)">Asn-&gt;Trp (N)</option>
        <option value="Asn-&gt;Tyr (N)">Asn-&gt;Tyr (N)</option>
        <option value="Asn-&gt;Val (N)">Asn-&gt;Val (N)</option>
        <option value="Asn-&gt;Xle (N)">Asn-&gt;Xle (N)</option>
        <option value="Asp-&gt;Ala (D)">Asp-&gt;Ala (D)</option>
        <option value="Asp-&gt;Arg (D)">Asp-&gt;Arg (D)</option>
        <option value="Asp-&gt;Asn (D)">Asp-&gt;Asn (D)</option>
        <option value="Asp-&gt;Cys (D)">Asp-&gt;Cys (D)</option>
        <option value="Asp-&gt;Gln (D)">Asp-&gt;Gln (D)</option>
        <option value="Asp-&gt;Glu (D)">Asp-&gt;Glu (D)</option>
        <option value="Asp-&gt;Gly (D)">Asp-&gt;Gly (D)</option>
        <option value="Asp-&gt;His (D)">Asp-&gt;His (D)</option>
        <option value="Asp-&gt;Lys (D)">Asp-&gt;Lys (D)</option>
        <option value="Asp-&gt;Met (D)">Asp-&gt;Met (D)</option>
        <option value="Asp-&gt;Phe (D)">Asp-&gt;Phe (D)</option>
        <option value="Asp-&gt;Pro (D)">Asp-&gt;Pro (D)</option>
        <option value="Asp-&gt;Ser (D)">Asp-&gt;Ser (D)</option>
        <option value="Asp-&gt;Thr (D)">Asp-&gt;Thr (D)</option>
        <option value="Asp-&gt;Trp (D)">Asp-&gt;Trp (D)</option>
        <option value="Asp-&gt;Tyr (D)">Asp-&gt;Tyr (D)</option>
        <option value="Asp-&gt;Val (D)">Asp-&gt;Val (D)</option>
        <option value="Asp-&gt;Xle (D)">Asp-&gt;Xle (D)</option>
        <option value="Aspartylurea (H)">Aspartylurea (H)</option>
        <option value="Atto495Maleimide (C)">Atto495Maleimide (C)</option>
        <option value="AzidoF (F)">AzidoF (F)</option>
        <option value="azole (C)">azole (C)</option>
        <option value="azole (S)">azole (S)</option>
        <option value="Bacillosamine (N)">Bacillosamine (N)</option>
        <option value="BADGE (C)">BADGE (C)</option>
        <option value="BDMAPP (H)">BDMAPP (H)</option>
        <option value="BDMAPP (K)">BDMAPP (K)</option>
        <option value="BDMAPP (Protein N-term)">BDMAPP (Protein N-term)</option>
        <option value="BDMAPP (W)">BDMAPP (W)</option>
        <option value="BDMAPP (Y)">BDMAPP (Y)</option>
        <option value="BEMAD_C (C)">BEMAD_C (C)</option>
        <option value="BEMAD_C:2H(6) (C)">BEMAD_C:2H(6) (C)</option>
        <option value="BEMAD_ST (S)">BEMAD_ST (S)</option>
        <option value="BEMAD_ST (T)">BEMAD_ST (T)</option>
        <option value="BEMAD_ST:2H(6) (S)">BEMAD_ST:2H(6) (S)</option>
        <option value="BEMAD_ST:2H(6) (T)">BEMAD_ST:2H(6) (T)</option>
        <option value="Benzoyl (K)">Benzoyl (K)</option>
        <option value="Benzoyl (N-term)">Benzoyl (N-term)</option>
        <option value="benzylguanidine (K)">benzylguanidine (K)</option>
        <option value="betaFNA (C)">betaFNA (C)</option>
        <option value="betaFNA (K)">betaFNA (K)</option>
        <option value="BHT (C)">BHT (C)</option>
        <option value="BHT (H)">BHT (H)</option>
        <option value="BHT (K)">BHT (K)</option>
        <option value="BHTOH (C)">BHTOH (C)</option>
        <option value="BHTOH (H)">BHTOH (H)</option>
        <option value="BHTOH (K)">BHTOH (K)</option>
        <option value="Biotin (K)">Biotin (K)</option>
        <option value="Biotin (N-term)">Biotin (N-term)</option>
        <option value="Biotin-HPDP (C)">Biotin-HPDP (C)</option>
        <option value="Biotin-PEG-PRA (M)">Biotin-PEG-PRA (M)</option>
        <option value="Biotin-PEO-Amine (D)">Biotin-PEO-Amine (D)</option>
        <option value="Biotin-PEO-Amine (E)">Biotin-PEO-Amine (E)</option>
        <option value="Biotin-PEO-Amine (Protein C-term)">Biotin-PEO-Amine (Protein C-term)</option>
        <option value="Biotin-phenacyl (C)">Biotin-phenacyl (C)</option>
        <option value="Biotin-phenacyl (H)">Biotin-phenacyl (H)</option>
        <option value="Biotin-phenacyl (S)">Biotin-phenacyl (S)</option>
        <option value="Biotin-tyramide (Y)">Biotin-tyramide (Y)</option>
        <option value="Biotin:Aha-DADPS (M)">Biotin:Aha-DADPS (M)</option>
        <option value="Biotin:Cayman-10013 (C)">Biotin:Cayman-10013 (C)</option>
        <option value="Biotin:Cayman-10141 (C)">Biotin:Cayman-10141 (C)</option>
        <option value="Biotin:Invitrogen-M1602 (C)">Biotin:Invitrogen-M1602 (C)</option>
        <option value="Biotin:Sigma-B1267 (C)">Biotin:Sigma-B1267 (C)</option>
        <option value="Biotin:Thermo-21325 (K)">Biotin:Thermo-21325 (K)</option>
        <option value="Biotin:Thermo-21328 (K)">Biotin:Thermo-21328 (K)</option>
        <option value="Biotin:Thermo-21328 (N-term)">Biotin:Thermo-21328 (N-term)</option>
        <option value="Biotin:Thermo-21330 (K)">Biotin:Thermo-21330 (K)</option>
        <option value="Biotin:Thermo-21330 (N-term)">Biotin:Thermo-21330 (N-term)</option>
        <option value="Biotin:Thermo-21345 (Q)">Biotin:Thermo-21345 (Q)</option>
        <option value="Biotin:Thermo-21360 (X)">Biotin:Thermo-21360 (X)</option>
        <option value="Biotin:Thermo-21901+2H2O (C)">Biotin:Thermo-21901+2H2O (C)</option>
        <option value="Biotin:Thermo-21901+H2O (C)">Biotin:Thermo-21901+H2O (C)</option>
        <option value="Biotin:Thermo-21911 (C)">Biotin:Thermo-21911 (C)</option>
        <option value="Biotin:Thermo-33033 (X)">Biotin:Thermo-33033 (X)</option>
        <option value="Biotin:Thermo-33033-H (X)">Biotin:Thermo-33033-H (X)</option>
        <option value="Biotin:Thermo-88310 (K)">Biotin:Thermo-88310 (K)</option>
        <option value="Biotin:Thermo-88317 (S)">Biotin:Thermo-88317 (S)</option>
        <option value="Biotin:Thermo-88317 (Y)">Biotin:Thermo-88317 (Y)</option>
        <option value="biotinAcrolein298 (C)">biotinAcrolein298 (C)</option>
        <option value="biotinAcrolein298 (H)">biotinAcrolein298 (H)</option>
        <option value="biotinAcrolein298 (K)">biotinAcrolein298 (K)</option>
        <option value="biotinAcrolein298 (Protein N-term)">biotinAcrolein298 (Protein N-term)</option>
        <option value="BisANS (K)">BisANS (K)</option>
        <option value="bisANS-sulfonates (K)">bisANS-sulfonates (K)</option>
        <option value="bisANS-sulfonates (S)">bisANS-sulfonates (S)</option>
        <option value="bisANS-sulfonates (T)">bisANS-sulfonates (T)</option>
        <option value="BITC (C)">BITC (C)</option>
        <option value="BITC (K)">BITC (K)</option>
        <option value="BITC (N-term)">BITC (N-term)</option>
        <option value="BMP-piperidinol (C)">BMP-piperidinol (C)</option>
        <option value="BMP-piperidinol (M)">BMP-piperidinol (M)</option>
        <option value="Brij35 (N-term)">Brij35 (N-term)</option>
        <option value="Brij58 (N-term)">Brij58 (N-term)</option>
        <option value="Bromo (F)">Bromo (F)</option>
        <option value="Bromo (H)">Bromo (H)</option>
        <option value="Bromo (W)">Bromo (W)</option>
        <option value="Bromo (Y)">Bromo (Y)</option>
        <option value="Bromobimane (C)">Bromobimane (C)</option>
        <option value="Butyryl (K)">Butyryl (K)</option>
        <option value="C8-QAT (K)">C8-QAT (K)</option>
        <option value="C8-QAT (N-term)">C8-QAT (N-term)</option>
        <option value="CAF (N-term)">CAF (N-term)</option>
        <option value="CAMthiopropanoyl (K)">CAMthiopropanoyl (K)</option>
        <option value="CAMthiopropanoyl (Protein N-term)">CAMthiopropanoyl (Protein N-term)</option>
        <option value="Can-FP-biotin (S)">Can-FP-biotin (S)</option>
        <option value="Can-FP-biotin (T)">Can-FP-biotin (T)</option>
        <option value="Can-FP-biotin (Y)">Can-FP-biotin (Y)</option>
        <option value="Carbamidomethyl (C)">Carbamidomethyl (C)</option>
        <option value="Carbamidomethyl (D)">Carbamidomethyl (D)</option>
        <option value="Carbamidomethyl (E)">Carbamidomethyl (E)</option>
        <option value="Carbamidomethyl (H)">Carbamidomethyl (H)</option>
        <option value="Carbamidomethyl (K)">Carbamidomethyl (K)</option>
        <option value="Carbamidomethyl (M)">Carbamidomethyl (M)</option>
        <option value="Carbamidomethyl (N-term)">Carbamidomethyl (N-term)</option>
        <option value="Carbamidomethyl (S)">Carbamidomethyl (S)</option>
        <option value="Carbamidomethyl (T)">Carbamidomethyl (T)</option>
        <option value="Carbamidomethyl (U)">Carbamidomethyl (U)</option>
        <option value="Carbamidomethyl (Y)">Carbamidomethyl (Y)</option>
        <option value="CarbamidomethylDTT (C)">CarbamidomethylDTT (C)</option>
        <option value="Carbamyl (C)">Carbamyl (C)</option>
        <option value="Carbamyl (K)">Carbamyl (K)</option>
        <option value="Carbamyl (M)">Carbamyl (M)</option>
        <option value="Carbamyl (N-term)">Carbamyl (N-term)</option>
        <option value="Carbamyl (Protein N-term)">Carbamyl (Protein N-term)</option>
        <option value="Carbamyl (R)">Carbamyl (R)</option>
        <option value="Carbamyl (S)">Carbamyl (S)</option>
        <option value="Carbamyl (T)">Carbamyl (T)</option>
        <option value="Carbamyl (Y)">Carbamyl (Y)</option>
        <option value="Carbofuran (S)">Carbofuran (S)</option>
        <option value="Carbonyl (A)">Carbonyl (A)</option>
        <option value="Carbonyl (E)">Carbonyl (E)</option>
        <option value="Carbonyl (I)">Carbonyl (I)</option>
        <option value="Carbonyl (L)">Carbonyl (L)</option>
        <option value="Carbonyl (Q)">Carbonyl (Q)</option>
        <option value="Carbonyl (R)">Carbonyl (R)</option>
        <option value="Carbonyl (S)">Carbonyl (S)</option>
        <option value="Carbonyl (V)">Carbonyl (V)</option>
        <option value="Carboxy (D)">Carboxy (D)</option>
        <option value="Carboxy (E)">Carboxy (E)</option>
        <option value="Carboxy (K)">Carboxy (K)</option>
        <option value="Carboxy (Protein N-term M)">Carboxy (Protein N-term M)</option>
        <option value="Carboxy (W)">Carboxy (W)</option>
        <option value="Carboxy-&gt;Thiocarboxy (Protein C-term G)">Carboxy-&gt;Thiocarboxy (Protein C-term G)</option>
        <option value="Carboxyethyl (H)">Carboxyethyl (H)</option>
        <option value="Carboxyethyl (K)">Carboxyethyl (K)</option>
        <option value="Carboxyethylpyrrole (K)">Carboxyethylpyrrole (K)</option>
        <option value="Carboxymethyl (C)">Carboxymethyl (C)</option>
        <option value="Carboxymethyl (K)">Carboxymethyl (K)</option>
        <option value="Carboxymethyl (N-term)">Carboxymethyl (N-term)</option>
        <option value="Carboxymethyl (U)">Carboxymethyl (U)</option>
        <option value="Carboxymethyl (W)">Carboxymethyl (W)</option>
        <option value="Carboxymethyl:13C(2) (C)">Carboxymethyl:13C(2) (C)</option>
        <option value="CarboxymethylDMAP (N-term)">CarboxymethylDMAP (N-term)</option>
        <option value="CarboxymethylDTT (C)">CarboxymethylDTT (C)</option>
        <option value="Cation:Ag (C-term)">Cation:Ag (C-term)</option>
        <option value="Cation:Ag (D)">Cation:Ag (D)</option>
        <option value="Cation:Ag (E)">Cation:Ag (E)</option>
        <option value="Cation:Al[III] (C-term)">Cation:Al[III] (C-term)</option>
        <option value="Cation:Al[III] (D)">Cation:Al[III] (D)</option>
        <option value="Cation:Al[III] (E)">Cation:Al[III] (E)</option>
        <option value="Cation:Ca[II] (C-term)">Cation:Ca[II] (C-term)</option>
        <option value="Cation:Ca[II] (D)">Cation:Ca[II] (D)</option>
        <option value="Cation:Ca[II] (E)">Cation:Ca[II] (E)</option>
        <option value="Cation:Cu[I] (C-term)">Cation:Cu[I] (C-term)</option>
        <option value="Cation:Cu[I] (D)">Cation:Cu[I] (D)</option>
        <option value="Cation:Cu[I] (E)">Cation:Cu[I] (E)</option>
        <option value="Cation:Cu[I] (H)">Cation:Cu[I] (H)</option>
        <option value="Cation:Fe[II] (C-term)">Cation:Fe[II] (C-term)</option>
        <option value="Cation:Fe[II] (D)">Cation:Fe[II] (D)</option>
        <option value="Cation:Fe[II] (E)">Cation:Fe[II] (E)</option>
        <option value="Cation:Fe[III] (C-term)">Cation:Fe[III] (C-term)</option>
        <option value="Cation:Fe[III] (D)">Cation:Fe[III] (D)</option>
        <option value="Cation:Fe[III] (E)">Cation:Fe[III] (E)</option>
        <option value="Cation:K (C-term)">Cation:K (C-term)</option>
        <option value="Cation:K (D)">Cation:K (D)</option>
        <option value="Cation:K (E)">Cation:K (E)</option>
        <option value="Cation:Li (C-term)">Cation:Li (C-term)</option>
        <option value="Cation:Li (D)">Cation:Li (D)</option>
        <option value="Cation:Li (E)">Cation:Li (E)</option>
        <option value="Cation:Mg[II] (C-term)">Cation:Mg[II] (C-term)</option>
        <option value="Cation:Mg[II] (D)">Cation:Mg[II] (D)</option>
        <option value="Cation:Mg[II] (E)">Cation:Mg[II] (E)</option>
        <option value="Cation:Na (C-term)">Cation:Na (C-term)</option>
        <option value="Cation:Na (D)">Cation:Na (D)</option>
        <option value="Cation:Na (E)">Cation:Na (E)</option>
        <option value="Cation:Ni[II] (C-term)">Cation:Ni[II] (C-term)</option>
        <option value="Cation:Ni[II] (D)">Cation:Ni[II] (D)</option>
        <option value="Cation:Ni[II] (E)">Cation:Ni[II] (E)</option>
        <option value="Cation:Zn[II] (C-term)">Cation:Zn[II] (C-term)</option>
        <option value="Cation:Zn[II] (D)">Cation:Zn[II] (D)</option>
        <option value="Cation:Zn[II] (E)">Cation:Zn[II] (E)</option>
        <option value="Cation:Zn[II] (H)">Cation:Zn[II] (H)</option>
        <option value="cGMP (C)">cGMP (C)</option>
        <option value="cGMP (S)">cGMP (S)</option>
        <option value="cGMP+RMP-loss (C)">cGMP+RMP-loss (C)</option>
        <option value="cGMP+RMP-loss (S)">cGMP+RMP-loss (S)</option>
        <option value="CHDH (D)">CHDH (D)</option>
        <option value="Chlorination (W)">Chlorination (W)</option>
        <option value="Chlorination (Y)">Chlorination (Y)</option>
        <option value="Cholesterol (Protein C-term)">Cholesterol (Protein C-term)</option>
        <option value="CIGG (K)">CIGG (K)</option>
        <option value="CLIP_TRAQ_2 (K)">CLIP_TRAQ_2 (K)</option>
        <option value="CLIP_TRAQ_2 (N-term)">CLIP_TRAQ_2 (N-term)</option>
        <option value="CLIP_TRAQ_2 (Y)">CLIP_TRAQ_2 (Y)</option>
        <option value="CLIP_TRAQ_3 (K)">CLIP_TRAQ_3 (K)</option>
        <option value="CLIP_TRAQ_3 (N-term)">CLIP_TRAQ_3 (N-term)</option>
        <option value="CLIP_TRAQ_3 (Y)">CLIP_TRAQ_3 (Y)</option>
        <option value="CLIP_TRAQ_4 (K)">CLIP_TRAQ_4 (K)</option>
        <option value="CLIP_TRAQ_4 (N-term)">CLIP_TRAQ_4 (N-term)</option>
        <option value="CLIP_TRAQ_4 (Y)">CLIP_TRAQ_4 (Y)</option>
        <option value="CoenzymeA (C)">CoenzymeA (C)</option>
        <option value="Cresylphosphate (H)">Cresylphosphate (H)</option>
        <option value="Cresylphosphate (K)">Cresylphosphate (K)</option>
        <option value="Cresylphosphate (R)">Cresylphosphate (R)</option>
        <option value="Cresylphosphate (S)">Cresylphosphate (S)</option>
        <option value="Cresylphosphate (T)">Cresylphosphate (T)</option>
        <option value="Cresylphosphate (Y)">Cresylphosphate (Y)</option>
        <option value="CresylSaligeninPhosphate (H)">CresylSaligeninPhosphate (H)</option>
        <option value="CresylSaligeninPhosphate (K)">CresylSaligeninPhosphate (K)</option>
        <option value="CresylSaligeninPhosphate (R)">CresylSaligeninPhosphate (R)</option>
        <option value="CresylSaligeninPhosphate (S)">CresylSaligeninPhosphate (S)</option>
        <option value="CresylSaligeninPhosphate (T)">CresylSaligeninPhosphate (T)</option>
        <option value="CresylSaligeninPhosphate (Y)">CresylSaligeninPhosphate (Y)</option>
        <option value="Crotonaldehyde (C)">Crotonaldehyde (C)</option>
        <option value="Crotonaldehyde (H)">Crotonaldehyde (H)</option>
        <option value="Crotonaldehyde (K)">Crotonaldehyde (K)</option>
        <option value="Crotonyl (K)">Crotonyl (K)</option>
        <option value="CuSMo (C)">CuSMo (C)</option>
        <option value="CUSTOM0 (A)">CUSTOM0 (A)</option>
        <option value="CUSTOM0 (C)">CUSTOM0 (C)</option>
        <option value="CUSTOM0 (C-term)">CUSTOM0 (C-term)</option>
        <option value="CUSTOM0 (D)">CUSTOM0 (D)</option>
        <option value="CUSTOM0 (E)">CUSTOM0 (E)</option>
        <option value="CUSTOM0 (F)">CUSTOM0 (F)</option>
        <option value="CUSTOM0 (G)">CUSTOM0 (G)</option>
        <option value="CUSTOM0 (H)">CUSTOM0 (H)</option>
        <option value="CUSTOM0 (I)">CUSTOM0 (I)</option>
        <option value="CUSTOM0 (K)">CUSTOM0 (K)</option>
        <option value="CUSTOM0 (L)">CUSTOM0 (L)</option>
        <option value="CUSTOM0 (M)">CUSTOM0 (M)</option>
        <option value="CUSTOM0 (N)">CUSTOM0 (N)</option>
        <option value="CUSTOM0 (N-term)">CUSTOM0 (N-term)</option>
        <option value="CUSTOM0 (P)">CUSTOM0 (P)</option>
        <option value="CUSTOM0 (Q)">CUSTOM0 (Q)</option>
        <option value="CUSTOM0 (R)">CUSTOM0 (R)</option>
        <option value="CUSTOM0 (S)">CUSTOM0 (S)</option>
        <option value="CUSTOM0 (T)">CUSTOM0 (T)</option>
        <option value="CUSTOM0 (V)">CUSTOM0 (V)</option>
        <option value="CUSTOM0 (W)">CUSTOM0 (W)</option>
        <option value="CUSTOM0 (Y)">CUSTOM0 (Y)</option>
        <option value="CUSTOM1 (A)">CUSTOM1 (A)</option>
        <option value="CUSTOM1 (C)">CUSTOM1 (C)</option>
        <option value="CUSTOM1 (C-term)">CUSTOM1 (C-term)</option>
        <option value="CUSTOM1 (D)">CUSTOM1 (D)</option>
        <option value="CUSTOM1 (E)">CUSTOM1 (E)</option>
        <option value="CUSTOM1 (F)">CUSTOM1 (F)</option>
        <option value="CUSTOM1 (G)">CUSTOM1 (G)</option>
        <option value="CUSTOM1 (H)">CUSTOM1 (H)</option>
        <option value="CUSTOM1 (I)">CUSTOM1 (I)</option>
        <option value="CUSTOM1 (K)">CUSTOM1 (K)</option>
        <option value="CUSTOM1 (L)">CUSTOM1 (L)</option>
        <option value="CUSTOM1 (M)">CUSTOM1 (M)</option>
        <option value="CUSTOM1 (N)">CUSTOM1 (N)</option>
        <option value="CUSTOM1 (N-term)">CUSTOM1 (N-term)</option>
        <option value="CUSTOM1 (P)">CUSTOM1 (P)</option>
        <option value="CUSTOM1 (Q)">CUSTOM1 (Q)</option>
        <option value="CUSTOM1 (R)">CUSTOM1 (R)</option>
        <option value="CUSTOM1 (S)">CUSTOM1 (S)</option>
        <option value="CUSTOM1 (T)">CUSTOM1 (T)</option>
        <option value="CUSTOM1 (V)">CUSTOM1 (V)</option>
        <option value="CUSTOM1 (W)">CUSTOM1 (W)</option>
        <option value="CUSTOM1 (Y)">CUSTOM1 (Y)</option>
        <option value="CUSTOM2 (A)">CUSTOM2 (A)</option>
        <option value="CUSTOM2 (C)">CUSTOM2 (C)</option>
        <option value="CUSTOM2 (C-term)">CUSTOM2 (C-term)</option>
        <option value="CUSTOM2 (D)">CUSTOM2 (D)</option>
        <option value="CUSTOM2 (E)">CUSTOM2 (E)</option>
        <option value="CUSTOM2 (F)">CUSTOM2 (F)</option>
        <option value="CUSTOM2 (G)">CUSTOM2 (G)</option>
        <option value="CUSTOM2 (H)">CUSTOM2 (H)</option>
        <option value="CUSTOM2 (I)">CUSTOM2 (I)</option>
        <option value="CUSTOM2 (K)">CUSTOM2 (K)</option>
        <option value="CUSTOM2 (L)">CUSTOM2 (L)</option>
        <option value="CUSTOM2 (M)">CUSTOM2 (M)</option>
        <option value="CUSTOM2 (N)">CUSTOM2 (N)</option>
        <option value="CUSTOM2 (N-term)">CUSTOM2 (N-term)</option>
        <option value="CUSTOM2 (P)">CUSTOM2 (P)</option>
        <option value="CUSTOM2 (Q)">CUSTOM2 (Q)</option>
        <option value="CUSTOM2 (R)">CUSTOM2 (R)</option>
        <option value="CUSTOM2 (S)">CUSTOM2 (S)</option>
        <option value="CUSTOM2 (T)">CUSTOM2 (T)</option>
        <option value="CUSTOM2 (V)">CUSTOM2 (V)</option>
        <option value="CUSTOM2 (W)">CUSTOM2 (W)</option>
        <option value="CUSTOM2 (Y)">CUSTOM2 (Y)</option>
        <option value="CUSTOM3 (A)">CUSTOM3 (A)</option>
        <option value="CUSTOM3 (C)">CUSTOM3 (C)</option>
        <option value="CUSTOM3 (C-term)">CUSTOM3 (C-term)</option>
        <option value="CUSTOM3 (D)">CUSTOM3 (D)</option>
        <option value="CUSTOM3 (E)">CUSTOM3 (E)</option>
        <option value="CUSTOM3 (F)">CUSTOM3 (F)</option>
        <option value="CUSTOM3 (G)">CUSTOM3 (G)</option>
        <option value="CUSTOM3 (H)">CUSTOM3 (H)</option>
        <option value="CUSTOM3 (I)">CUSTOM3 (I)</option>
        <option value="CUSTOM3 (K)">CUSTOM3 (K)</option>
        <option value="CUSTOM3 (L)">CUSTOM3 (L)</option>
        <option value="CUSTOM3 (M)">CUSTOM3 (M)</option>
        <option value="CUSTOM3 (N)">CUSTOM3 (N)</option>
        <option value="CUSTOM3 (N-term)">CUSTOM3 (N-term)</option>
        <option value="CUSTOM3 (P)">CUSTOM3 (P)</option>
        <option value="CUSTOM3 (Q)">CUSTOM3 (Q)</option>
        <option value="CUSTOM3 (R)">CUSTOM3 (R)</option>
        <option value="CUSTOM3 (S)">CUSTOM3 (S)</option>
        <option value="CUSTOM3 (T)">CUSTOM3 (T)</option>
        <option value="CUSTOM3 (V)">CUSTOM3 (V)</option>
        <option value="CUSTOM3 (W)">CUSTOM3 (W)</option>
        <option value="CUSTOM3 (Y)">CUSTOM3 (Y)</option>
        <option value="CUSTOM4 (A)">CUSTOM4 (A)</option>
        <option value="CUSTOM4 (C)">CUSTOM4 (C)</option>
        <option value="CUSTOM4 (C-term)">CUSTOM4 (C-term)</option>
        <option value="CUSTOM4 (D)">CUSTOM4 (D)</option>
        <option value="CUSTOM4 (E)">CUSTOM4 (E)</option>
        <option value="CUSTOM4 (F)">CUSTOM4 (F)</option>
        <option value="CUSTOM4 (G)">CUSTOM4 (G)</option>
        <option value="CUSTOM4 (H)">CUSTOM4 (H)</option>
        <option value="CUSTOM4 (I)">CUSTOM4 (I)</option>
        <option value="CUSTOM4 (K)">CUSTOM4 (K)</option>
        <option value="CUSTOM4 (L)">CUSTOM4 (L)</option>
        <option value="CUSTOM4 (M)">CUSTOM4 (M)</option>
        <option value="CUSTOM4 (N)">CUSTOM4 (N)</option>
        <option value="CUSTOM4 (N-term)">CUSTOM4 (N-term)</option>
        <option value="CUSTOM4 (P)">CUSTOM4 (P)</option>
        <option value="CUSTOM4 (Q)">CUSTOM4 (Q)</option>
        <option value="CUSTOM4 (R)">CUSTOM4 (R)</option>
        <option value="CUSTOM4 (S)">CUSTOM4 (S)</option>
        <option value="CUSTOM4 (T)">CUSTOM4 (T)</option>
        <option value="CUSTOM4 (V)">CUSTOM4 (V)</option>
        <option value="CUSTOM4 (W)">CUSTOM4 (W)</option>
        <option value="CUSTOM4 (Y)">CUSTOM4 (Y)</option>
        <option value="CUSTOM5 (A)">CUSTOM5 (A)</option>
        <option value="CUSTOM5 (C)">CUSTOM5 (C)</option>
        <option value="CUSTOM5 (C-term)">CUSTOM5 (C-term)</option>
        <option value="CUSTOM5 (D)">CUSTOM5 (D)</option>
        <option value="CUSTOM5 (E)">CUSTOM5 (E)</option>
        <option value="CUSTOM5 (F)">CUSTOM5 (F)</option>
        <option value="CUSTOM5 (G)">CUSTOM5 (G)</option>
        <option value="CUSTOM5 (H)">CUSTOM5 (H)</option>
        <option value="CUSTOM5 (I)">CUSTOM5 (I)</option>
        <option value="CUSTOM5 (K)">CUSTOM5 (K)</option>
        <option value="CUSTOM5 (L)">CUSTOM5 (L)</option>
        <option value="CUSTOM5 (M)">CUSTOM5 (M)</option>
        <option value="CUSTOM5 (N)">CUSTOM5 (N)</option>
        <option value="CUSTOM5 (N-term)">CUSTOM5 (N-term)</option>
        <option value="CUSTOM5 (P)">CUSTOM5 (P)</option>
        <option value="CUSTOM5 (Q)">CUSTOM5 (Q)</option>
        <option value="CUSTOM5 (R)">CUSTOM5 (R)</option>
        <option value="CUSTOM5 (S)">CUSTOM5 (S)</option>
        <option value="CUSTOM5 (T)">CUSTOM5 (T)</option>
        <option value="CUSTOM5 (V)">CUSTOM5 (V)</option>
        <option value="CUSTOM5 (W)">CUSTOM5 (W)</option>
        <option value="CUSTOM5 (Y)">CUSTOM5 (Y)</option>
        <option value="CUSTOM6 (A)">CUSTOM6 (A)</option>
        <option value="CUSTOM6 (C)">CUSTOM6 (C)</option>
        <option value="CUSTOM6 (C-term)">CUSTOM6 (C-term)</option>
        <option value="CUSTOM6 (D)">CUSTOM6 (D)</option>
        <option value="CUSTOM6 (E)">CUSTOM6 (E)</option>
        <option value="CUSTOM6 (F)">CUSTOM6 (F)</option>
        <option value="CUSTOM6 (G)">CUSTOM6 (G)</option>
        <option value="CUSTOM6 (H)">CUSTOM6 (H)</option>
        <option value="CUSTOM6 (I)">CUSTOM6 (I)</option>
        <option value="CUSTOM6 (K)">CUSTOM6 (K)</option>
        <option value="CUSTOM6 (L)">CUSTOM6 (L)</option>
        <option value="CUSTOM6 (M)">CUSTOM6 (M)</option>
        <option value="CUSTOM6 (N)">CUSTOM6 (N)</option>
        <option value="CUSTOM6 (N-term)">CUSTOM6 (N-term)</option>
        <option value="CUSTOM6 (P)">CUSTOM6 (P)</option>
        <option value="CUSTOM6 (Q)">CUSTOM6 (Q)</option>
        <option value="CUSTOM6 (R)">CUSTOM6 (R)</option>
        <option value="CUSTOM6 (S)">CUSTOM6 (S)</option>
        <option value="CUSTOM6 (T)">CUSTOM6 (T)</option>
        <option value="CUSTOM6 (V)">CUSTOM6 (V)</option>
        <option value="CUSTOM6 (W)">CUSTOM6 (W)</option>
        <option value="CUSTOM6 (Y)">CUSTOM6 (Y)</option>
        <option value="CUSTOM7 (A)">CUSTOM7 (A)</option>
        <option value="CUSTOM7 (C)">CUSTOM7 (C)</option>
        <option value="CUSTOM7 (C-term)">CUSTOM7 (C-term)</option>
        <option value="CUSTOM7 (D)">CUSTOM7 (D)</option>
        <option value="CUSTOM7 (E)">CUSTOM7 (E)</option>
        <option value="CUSTOM7 (F)">CUSTOM7 (F)</option>
        <option value="CUSTOM7 (G)">CUSTOM7 (G)</option>
        <option value="CUSTOM7 (H)">CUSTOM7 (H)</option>
        <option value="CUSTOM7 (I)">CUSTOM7 (I)</option>
        <option value="CUSTOM7 (K)">CUSTOM7 (K)</option>
        <option value="CUSTOM7 (L)">CUSTOM7 (L)</option>
        <option value="CUSTOM7 (M)">CUSTOM7 (M)</option>
        <option value="CUSTOM7 (N)">CUSTOM7 (N)</option>
        <option value="CUSTOM7 (N-term)">CUSTOM7 (N-term)</option>
        <option value="CUSTOM7 (P)">CUSTOM7 (P)</option>
        <option value="CUSTOM7 (Q)">CUSTOM7 (Q)</option>
        <option value="CUSTOM7 (R)">CUSTOM7 (R)</option>
        <option value="CUSTOM7 (S)">CUSTOM7 (S)</option>
        <option value="CUSTOM7 (T)">CUSTOM7 (T)</option>
        <option value="CUSTOM7 (V)">CUSTOM7 (V)</option>
        <option value="CUSTOM7 (W)">CUSTOM7 (W)</option>
        <option value="CUSTOM7 (Y)">CUSTOM7 (Y)</option>
        <option value="CUSTOM8 (A)">CUSTOM8 (A)</option>
        <option value="CUSTOM8 (C)">CUSTOM8 (C)</option>
        <option value="CUSTOM8 (C-term)">CUSTOM8 (C-term)</option>
        <option value="CUSTOM8 (D)">CUSTOM8 (D)</option>
        <option value="CUSTOM8 (E)">CUSTOM8 (E)</option>
        <option value="CUSTOM8 (F)">CUSTOM8 (F)</option>
        <option value="CUSTOM8 (G)">CUSTOM8 (G)</option>
        <option value="CUSTOM8 (H)">CUSTOM8 (H)</option>
        <option value="CUSTOM8 (I)">CUSTOM8 (I)</option>
        <option value="CUSTOM8 (K)">CUSTOM8 (K)</option>
        <option value="CUSTOM8 (L)">CUSTOM8 (L)</option>
        <option value="CUSTOM8 (M)">CUSTOM8 (M)</option>
        <option value="CUSTOM8 (N)">CUSTOM8 (N)</option>
        <option value="CUSTOM8 (N-term)">CUSTOM8 (N-term)</option>
        <option value="CUSTOM8 (P)">CUSTOM8 (P)</option>
        <option value="CUSTOM8 (Q)">CUSTOM8 (Q)</option>
        <option value="CUSTOM8 (R)">CUSTOM8 (R)</option>
        <option value="CUSTOM8 (S)">CUSTOM8 (S)</option>
        <option value="CUSTOM8 (T)">CUSTOM8 (T)</option>
        <option value="CUSTOM8 (V)">CUSTOM8 (V)</option>
        <option value="CUSTOM8 (W)">CUSTOM8 (W)</option>
        <option value="CUSTOM8 (Y)">CUSTOM8 (Y)</option>
        <option value="CUSTOM9 (A)">CUSTOM9 (A)</option>
        <option value="CUSTOM9 (C)">CUSTOM9 (C)</option>
        <option value="CUSTOM9 (C-term)">CUSTOM9 (C-term)</option>
        <option value="CUSTOM9 (D)">CUSTOM9 (D)</option>
        <option value="CUSTOM9 (E)">CUSTOM9 (E)</option>
        <option value="CUSTOM9 (F)">CUSTOM9 (F)</option>
        <option value="CUSTOM9 (G)">CUSTOM9 (G)</option>
        <option value="CUSTOM9 (H)">CUSTOM9 (H)</option>
        <option value="CUSTOM9 (I)">CUSTOM9 (I)</option>
        <option value="CUSTOM9 (K)">CUSTOM9 (K)</option>
        <option value="CUSTOM9 (L)">CUSTOM9 (L)</option>
        <option value="CUSTOM9 (M)">CUSTOM9 (M)</option>
        <option value="CUSTOM9 (N)">CUSTOM9 (N)</option>
        <option value="CUSTOM9 (N-term)">CUSTOM9 (N-term)</option>
        <option value="CUSTOM9 (P)">CUSTOM9 (P)</option>
        <option value="CUSTOM9 (Q)">CUSTOM9 (Q)</option>
        <option value="CUSTOM9 (R)">CUSTOM9 (R)</option>
        <option value="CUSTOM9 (S)">CUSTOM9 (S)</option>
        <option value="CUSTOM9 (T)">CUSTOM9 (T)</option>
        <option value="CUSTOM9 (V)">CUSTOM9 (V)</option>
        <option value="CUSTOM9 (W)">CUSTOM9 (W)</option>
        <option value="CUSTOM9 (Y)">CUSTOM9 (Y)</option>
        <option value="Cy3-maleimide (C)">Cy3-maleimide (C)</option>
        <option value="Cy3b-maleimide (C)">Cy3b-maleimide (C)</option>
        <option value="Cyano (C)">Cyano (C)</option>
        <option value="CyDye-Cy3 (C)">CyDye-Cy3 (C)</option>
        <option value="CyDye-Cy5 (C)">CyDye-Cy5 (C)</option>
        <option value="Cys-&gt;Ala (C)">Cys-&gt;Ala (C)</option>
        <option value="Cys-&gt;Arg (C)">Cys-&gt;Arg (C)</option>
        <option value="Cys-&gt;Asn (C)">Cys-&gt;Asn (C)</option>
        <option value="Cys-&gt;Asp (C)">Cys-&gt;Asp (C)</option>
        <option value="Cys-&gt;CamSec (C)">Cys-&gt;CamSec (C)</option>
        <option value="Cys-&gt;Dha (C)">Cys-&gt;Dha (C)</option>
        <option value="Cys-&gt;ethylaminoAla (C)">Cys-&gt;ethylaminoAla (C)</option>
        <option value="Cys-&gt;Gln (C)">Cys-&gt;Gln (C)</option>
        <option value="Cys-&gt;Glu (C)">Cys-&gt;Glu (C)</option>
        <option value="Cys-&gt;Gly (C)">Cys-&gt;Gly (C)</option>
        <option value="Cys-&gt;His (C)">Cys-&gt;His (C)</option>
        <option value="Cys-&gt;Lys (C)">Cys-&gt;Lys (C)</option>
        <option value="Cys-&gt;Met (C)">Cys-&gt;Met (C)</option>
        <option value="Cys-&gt;methylaminoAla (C)">Cys-&gt;methylaminoAla (C)</option>
        <option value="Cys-&gt;Oxoalanine (C)">Cys-&gt;Oxoalanine (C)</option>
        <option value="Cys-&gt;Phe (C)">Cys-&gt;Phe (C)</option>
        <option value="Cys-&gt;Pro (C)">Cys-&gt;Pro (C)</option>
        <option value="Cys-&gt;PyruvicAcid (Protein N-term C)">Cys-&gt;PyruvicAcid (Protein N-term C)</option>
        <option value="Cys-&gt;SecNEM (C)">Cys-&gt;SecNEM (C)</option>
        <option value="Cys-&gt;SecNEM:2H(5) (C)">Cys-&gt;SecNEM:2H(5) (C)</option>
        <option value="Cys-&gt;Ser (C)">Cys-&gt;Ser (C)</option>
        <option value="Cys-&gt;Thr (C)">Cys-&gt;Thr (C)</option>
        <option value="Cys-&gt;Trp (C)">Cys-&gt;Trp (C)</option>
        <option value="Cys-&gt;Tyr (C)">Cys-&gt;Tyr (C)</option>
        <option value="Cys-&gt;Val (C)">Cys-&gt;Val (C)</option>
        <option value="Cys-&gt;Xle (C)">Cys-&gt;Xle (C)</option>
        <option value="Cysteinyl (C)">Cysteinyl (C)</option>
        <option value="cysTMT (C)">cysTMT (C)</option>
        <option value="cysTMT6plex (C)">cysTMT6plex (C)</option>
        <option value="Cytopiloyne (C)">Cytopiloyne (C)</option>
        <option value="Cytopiloyne (K)">Cytopiloyne (K)</option>
        <option value="Cytopiloyne (N-term)">Cytopiloyne (N-term)</option>
        <option value="Cytopiloyne (P)">Cytopiloyne (P)</option>
        <option value="Cytopiloyne (R)">Cytopiloyne (R)</option>
        <option value="Cytopiloyne (S)">Cytopiloyne (S)</option>
        <option value="Cytopiloyne (Y)">Cytopiloyne (Y)</option>
        <option value="Cytopiloyne+water (C)">Cytopiloyne+water (C)</option>
        <option value="Cytopiloyne+water (K)">Cytopiloyne+water (K)</option>
        <option value="Cytopiloyne+water (N-term)">Cytopiloyne+water (N-term)</option>
        <option value="Cytopiloyne+water (R)">Cytopiloyne+water (R)</option>
        <option value="Cytopiloyne+water (S)">Cytopiloyne+water (S)</option>
        <option value="Cytopiloyne+water (T)">Cytopiloyne+water (T)</option>
        <option value="Cytopiloyne+water (Y)">Cytopiloyne+water (Y)</option>
        <option value="DAET (S)">DAET (S)</option>
        <option value="DAET (T)">DAET (T)</option>
        <option value="Dansyl (K)">Dansyl (K)</option>
        <option value="Dansyl (N-term)">Dansyl (N-term)</option>
        <option value="Dap-DSP (A)">Dap-DSP (A)</option>
        <option value="Dap-DSP (E)">Dap-DSP (E)</option>
        <option value="Dap-DSP (K)">Dap-DSP (K)</option>
        <option value="Deamidated (N)">Deamidated (N)</option>
        <option value="Deamidated (Protein N-term F)">Deamidated (Protein N-term F)</option>
        <option value="Deamidated (Q)">Deamidated (Q)</option>
        <option value="Deamidated (R)">Deamidated (R)</option>
        <option value="Deamidated:18O(1) (N)">Deamidated:18O(1) (N)</option>
        <option value="Deamidated:18O(1) (Q)">Deamidated:18O(1) (Q)</option>
        <option value="Decanoyl (S)">Decanoyl (S)</option>
        <option value="Decanoyl (T)">Decanoyl (T)</option>
        <option value="Decarboxylation (D)">Decarboxylation (D)</option>
        <option value="Decarboxylation (E)">Decarboxylation (E)</option>
        <option value="DEDGFLYMVYASQETFG (K)">DEDGFLYMVYASQETFG (K)</option>
        <option value="Dehydrated (D)">Dehydrated (D)</option>
        <option value="Dehydrated (N-term C)">Dehydrated (N-term C)</option>
        <option value="Dehydrated (Protein C-term N)">Dehydrated (Protein C-term N)</option>
        <option value="Dehydrated (Protein C-term Q)">Dehydrated (Protein C-term Q)</option>
        <option value="Dehydrated (S)">Dehydrated (S)</option>
        <option value="Dehydrated (T)">Dehydrated (T)</option>
        <option value="Dehydrated (Y)">Dehydrated (Y)</option>
        <option value="Dehydro (C)">Dehydro (C)</option>
        <option value="Delta:H(-1)N(-1)18O(1) (N)">Delta:H(-1)N(-1)18O(1) (N)</option>
        <option value="Delta:H(-4)O(2) (W)">Delta:H(-4)O(2) (W)</option>
        <option value="Delta:H(-4)O(3) (W)">Delta:H(-4)O(3) (W)</option>
        <option value="Delta:H(10)C(8)O(1) (K)">Delta:H(10)C(8)O(1) (K)</option>
        <option value="Delta:H(2)C(2) (H)">Delta:H(2)C(2) (H)</option>
        <option value="Delta:H(2)C(2) (K)">Delta:H(2)C(2) (K)</option>
        <option value="Delta:H(2)C(2) (N-term)">Delta:H(2)C(2) (N-term)</option>
        <option value="Delta:H(2)C(2) (Protein N-term)">Delta:H(2)C(2) (Protein N-term)</option>
        <option value="Delta:H(2)C(3) (K)">Delta:H(2)C(3) (K)</option>
        <option value="Delta:H(2)C(3)O(1) (K)">Delta:H(2)C(3)O(1) (K)</option>
        <option value="Delta:H(2)C(3)O(1) (R)">Delta:H(2)C(3)O(1) (R)</option>
        <option value="Delta:H(2)C(5) (K)">Delta:H(2)C(5) (K)</option>
        <option value="Delta:H(4)C(2) (H)">Delta:H(4)C(2) (H)</option>
        <option value="Delta:H(4)C(2) (K)">Delta:H(4)C(2) (K)</option>
        <option value="Delta:H(4)C(2) (N-term)">Delta:H(4)C(2) (N-term)</option>
        <option value="Delta:H(4)C(2)O(-1)S(1) (S)">Delta:H(4)C(2)O(-1)S(1) (S)</option>
        <option value="Delta:H(4)C(3) (H)">Delta:H(4)C(3) (H)</option>
        <option value="Delta:H(4)C(3) (K)">Delta:H(4)C(3) (K)</option>
        <option value="Delta:H(4)C(3) (Protein N-term)">Delta:H(4)C(3) (Protein N-term)</option>
        <option value="Delta:H(4)C(3)O(1) (C)">Delta:H(4)C(3)O(1) (C)</option>
        <option value="Delta:H(4)C(3)O(1) (H)">Delta:H(4)C(3)O(1) (H)</option>
        <option value="Delta:H(4)C(3)O(1) (K)">Delta:H(4)C(3)O(1) (K)</option>
        <option value="Delta:H(4)C(3)O(1) (R)">Delta:H(4)C(3)O(1) (R)</option>
        <option value="Delta:H(4)C(3)O(2) (K)">Delta:H(4)C(3)O(2) (K)</option>
        <option value="Delta:H(4)C(5)O(1) (R)">Delta:H(4)C(5)O(1) (R)</option>
        <option value="Delta:H(4)C(6) (K)">Delta:H(4)C(6) (K)</option>
        <option value="Delta:H(5)C(2) (P)">Delta:H(5)C(2) (P)</option>
        <option value="Delta:H(6)C(3)O(1) (C)">Delta:H(6)C(3)O(1) (C)</option>
        <option value="Delta:H(6)C(3)O(1) (H)">Delta:H(6)C(3)O(1) (H)</option>
        <option value="Delta:H(6)C(3)O(1) (K)">Delta:H(6)C(3)O(1) (K)</option>
        <option value="Delta:H(6)C(3)O(1) (Protein N-term)">Delta:H(6)C(3)O(1) (Protein N-term)</option>
        <option value="Delta:H(6)C(6)O(1) (K)">Delta:H(6)C(6)O(1) (K)</option>
        <option value="Delta:H(6)C(7)O(4) (R)">Delta:H(6)C(7)O(4) (R)</option>
        <option value="Delta:H(8)C(6)O(1) (K)">Delta:H(8)C(6)O(1) (K)</option>
        <option value="Delta:H(8)C(6)O(1) (Protein N-term)">Delta:H(8)C(6)O(1) (Protein N-term)</option>
        <option value="Delta:H(8)C(6)O(2) (K)">Delta:H(8)C(6)O(2) (K)</option>
        <option value="Delta:Hg(1) (C)">Delta:Hg(1) (C)</option>
        <option value="Delta:O(4) (W)">Delta:O(4) (W)</option>
        <option value="Delta:S(-1)Se(1) (C)">Delta:S(-1)Se(1) (C)</option>
        <option value="Delta:S(-1)Se(1) (M)">Delta:S(-1)Se(1) (M)</option>
        <option value="Delta:Se(1) (C)">Delta:Se(1) (C)</option>
        <option value="Deoxy (D)">Deoxy (D)</option>
        <option value="Deoxy (S)">Deoxy (S)</option>
        <option value="Deoxy (T)">Deoxy (T)</option>
        <option value="Deoxyhypusine (K)">Deoxyhypusine (K)</option>
        <option value="Deoxyhypusine (Q)">Deoxyhypusine (Q)</option>
        <option value="DeStreak (C)">DeStreak (C)</option>
        <option value="Dethiomethyl (M)">Dethiomethyl (M)</option>
        <option value="dHex (N)">dHex (N)</option>
        <option value="dHex (S)">dHex (S)</option>
        <option value="dHex (T)">dHex (T)</option>
        <option value="dHex(1)Hex(1) (S)">dHex(1)Hex(1) (S)</option>
        <option value="dHex(1)Hex(1) (T)">dHex(1)Hex(1) (T)</option>
        <option value="dHex(1)Hex(1)HexA(1)HexNAc(3) (S)">dHex(1)Hex(1)HexA(1)HexNAc(3) (S)</option>
        <option value="dHex(1)Hex(1)HexA(1)HexNAc(3) (T)">dHex(1)Hex(1)HexA(1)HexNAc(3) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)Kdn(1) (S)">dHex(1)Hex(1)HexNAc(1)Kdn(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)Kdn(1) (T)">dHex(1)Hex(1)HexNAc(1)Kdn(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuAc(1) (S)">dHex(1)Hex(1)HexNAc(1)NeuAc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuAc(1) (T)">dHex(1)Hex(1)HexNAc(1)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuGc(1) (S)">dHex(1)Hex(1)HexNAc(1)NeuGc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuGc(1) (T)">dHex(1)Hex(1)HexNAc(1)NeuGc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)Kdn(1) (S)">dHex(1)Hex(1)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)Kdn(1) (T)">dHex(1)Hex(1)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1) (S)">dHex(1)Hex(1)HexNAc(2)NeuAc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1) (T)">dHex(1)Hex(1)HexNAc(2)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(2) (S)">dHex(1)Hex(1)HexNAc(2)NeuAc(2) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(2) (T)">dHex(1)Hex(1)HexNAc(2)NeuAc(2) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(2)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(2)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3) (S)">dHex(1)Hex(1)HexNAc(3) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3) (T)">dHex(1)Hex(1)HexNAc(3) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1) (S)">dHex(1)Hex(1)HexNAc(3)NeuAc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1) (T)">dHex(1)Hex(1)HexNAc(3)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuGc(1) (S)">dHex(1)Hex(1)HexNAc(3)NeuGc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuGc(1) (T)">dHex(1)Hex(1)HexNAc(3)NeuGc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(3)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(3)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(4) (S)">dHex(1)Hex(1)HexNAc(4) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(4) (T)">dHex(1)Hex(1)HexNAc(4) (T)</option>
        <option value="dHex(1)Hex(2) (S)">dHex(1)Hex(2) (S)</option>
        <option value="dHex(1)Hex(2) (T)">dHex(1)Hex(2) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1) (S)">dHex(1)Hex(2)HexA(1) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1) (T)">dHex(1)Hex(2)HexA(1) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1) (S)">dHex(1)Hex(2)HexA(1)HexNAc(1) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1) (T)">dHex(1)Hex(2)HexA(1)HexNAc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(2) (S)">dHex(1)Hex(2)HexA(1)HexNAc(2) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(2) (T)">dHex(1)Hex(2)HexA(1)HexNAc(2) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(1) (S)">dHex(1)Hex(2)HexNAc(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(1) (T)">dHex(1)Hex(2)HexNAc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(1)NeuAc(2) (S)">dHex(1)Hex(2)HexNAc(1)NeuAc(2) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(1)NeuAc(2) (T)">dHex(1)Hex(2)HexNAc(1)NeuAc(2) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
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        <option value="dHex(3)Hex(4)HexNAc(4) (S)">dHex(3)Hex(4)HexNAc(4) (S)</option>
        <option value="dHex(3)Hex(4)HexNAc(4) (T)">dHex(3)Hex(4)HexNAc(4) (T)</option>
        <option value="dHex(3)Hex(4)HexNAc(4)Sulf(1) (N)">dHex(3)Hex(4)HexNAc(4)Sulf(1) (N)</option>
        <option value="dHex(3)HexNAc(3)Kdn(1) (S)">dHex(3)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(3)HexNAc(3)Kdn(1) (T)">dHex(3)HexNAc(3)Kdn(1) (T)</option>
        <option value="dHex(4)Hex(1)HexNAc(1)Kdn(2) (S)">dHex(4)Hex(1)HexNAc(1)Kdn(2) (S)</option>
        <option value="dHex(4)Hex(1)HexNAc(1)Kdn(2) (T)">dHex(4)Hex(1)HexNAc(1)Kdn(2) (T)</option>
        <option value="dHex(4)Hex(1)HexNAc(2)Kdn(1) (S)">dHex(4)Hex(1)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(4)Hex(1)HexNAc(2)Kdn(1) (T)">dHex(4)Hex(1)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(4)Hex(1)HexNAc(3)Kdn(1) (S)">dHex(4)Hex(1)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(4)Hex(1)HexNAc(3)Kdn(1) (T)">dHex(4)Hex(1)HexNAc(3)Kdn(1) (T)</option>
        <option value="dHex(4)Hex(2)HexNAc(2)Kdn(1) (S)">dHex(4)Hex(2)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(4)Hex(2)HexNAc(2)Kdn(1) (T)">dHex(4)Hex(2)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(4)Hex(2)HexNAc(3) (S)">dHex(4)Hex(2)HexNAc(3) (S)</option>
        <option value="dHex(4)Hex(2)HexNAc(3) (T)">dHex(4)Hex(2)HexNAc(3) (T)</option>
        <option value="dHex(4)Hex(3)HexNAc(2)NeuAc(1) (S)">dHex(4)Hex(3)HexNAc(2)NeuAc(1) (S)</option>
        <option value="dHex(4)Hex(3)HexNAc(2)NeuAc(1) (T)">dHex(4)Hex(3)HexNAc(2)NeuAc(1) (T)</option>
        <option value="dHex(4)Hex(3)HexNAc(3) (S)">dHex(4)Hex(3)HexNAc(3) (S)</option>
        <option value="dHex(4)Hex(3)HexNAc(3) (T)">dHex(4)Hex(3)HexNAc(3) (T)</option>
        <option value="dHex(4)HexNAc(3)Kdn(1) (S)">dHex(4)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(4)HexNAc(3)Kdn(1) (T)">dHex(4)HexNAc(3)Kdn(1) (T)</option>
        <option value="DHP (C)">DHP (C)</option>
        <option value="Diacylglycerol (C)">Diacylglycerol (C)</option>
        <option value="DiART6plex (K)">DiART6plex (K)</option>
        <option value="DiART6plex (N-term)">DiART6plex (N-term)</option>
        <option value="DiART6plex (Protein N-term)">DiART6plex (Protein N-term)</option>
        <option value="DiART6plex (Y)">DiART6plex (Y)</option>
        <option value="DiART6plex115 (K)">DiART6plex115 (K)</option>
        <option value="DiART6plex115 (N-term)">DiART6plex115 (N-term)</option>
        <option value="DiART6plex115 (Protein N-term)">DiART6plex115 (Protein N-term)</option>
        <option value="DiART6plex115 (Y)">DiART6plex115 (Y)</option>
        <option value="DiART6plex116/119 (K)">DiART6plex116/119 (K)</option>
        <option value="DiART6plex116/119 (N-term)">DiART6plex116/119 (N-term)</option>
        <option value="DiART6plex116/119 (Protein N-term)">DiART6plex116/119 (Protein N-term)</option>
        <option value="DiART6plex116/119 (Y)">DiART6plex116/119 (Y)</option>
        <option value="DiART6plex117 (K)">DiART6plex117 (K)</option>
        <option value="DiART6plex117 (N-term)">DiART6plex117 (N-term)</option>
        <option value="DiART6plex117 (Protein N-term)">DiART6plex117 (Protein N-term)</option>
        <option value="DiART6plex117 (Y)">DiART6plex117 (Y)</option>
        <option value="DiART6plex118 (K)">DiART6plex118 (K)</option>
        <option value="DiART6plex118 (N-term)">DiART6plex118 (N-term)</option>
        <option value="DiART6plex118 (Protein N-term)">DiART6plex118 (Protein N-term)</option>
        <option value="DiART6plex118 (Y)">DiART6plex118 (Y)</option>
        <option value="Dibromo (Y)">Dibromo (Y)</option>
        <option value="Dicarbamidomethyl (C)">Dicarbamidomethyl (C)</option>
        <option value="Dicarbamidomethyl (H)">Dicarbamidomethyl (H)</option>
        <option value="Dicarbamidomethyl (K)">Dicarbamidomethyl (K)</option>
        <option value="Dicarbamidomethyl (N-term)">Dicarbamidomethyl (N-term)</option>
        <option value="Dicarbamidomethyl (R)">Dicarbamidomethyl (R)</option>
        <option value="dichlorination (C)">dichlorination (C)</option>
        <option value="dichlorination (Y)">dichlorination (Y)</option>
        <option value="Didehydro (C-term K)">Didehydro (C-term K)</option>
        <option value="Didehydro (S)">Didehydro (S)</option>
        <option value="Didehydro (T)">Didehydro (T)</option>
        <option value="Didehydro (Y)">Didehydro (Y)</option>
        <option value="Didehydroretinylidene (K)">Didehydroretinylidene (K)</option>
        <option value="Diethyl (K)">Diethyl (K)</option>
        <option value="Diethyl (N-term)">Diethyl (N-term)</option>
        <option value="Diethylphosphate (C)">Diethylphosphate (C)</option>
        <option value="Diethylphosphate (H)">Diethylphosphate (H)</option>
        <option value="Diethylphosphate (K)">Diethylphosphate (K)</option>
        <option value="Diethylphosphate (N-term)">Diethylphosphate (N-term)</option>
        <option value="Diethylphosphate (S)">Diethylphosphate (S)</option>
        <option value="Diethylphosphate (T)">Diethylphosphate (T)</option>
        <option value="Diethylphosphate (Y)">Diethylphosphate (Y)</option>
        <option value="Diethylphosphothione (C)">Diethylphosphothione (C)</option>
        <option value="Diethylphosphothione (H)">Diethylphosphothione (H)</option>
        <option value="Diethylphosphothione (K)">Diethylphosphothione (K)</option>
        <option value="Diethylphosphothione (S)">Diethylphosphothione (S)</option>
        <option value="Diethylphosphothione (T)">Diethylphosphothione (T)</option>
        <option value="Diethylphosphothione (Y)">Diethylphosphothione (Y)</option>
        <option value="Difuran (Y)">Difuran (Y)</option>
        <option value="Dihydroxyimidazolidine (R)">Dihydroxyimidazolidine (R)</option>
        <option value="Diiodo (H)">Diiodo (H)</option>
        <option value="Diiodo (Y)">Diiodo (Y)</option>
        <option value="Diironsubcluster (C)">Diironsubcluster (C)</option>
        <option value="Diisopropylphosphate (K)">Diisopropylphosphate (K)</option>
        <option value="Diisopropylphosphate (N-term)">Diisopropylphosphate (N-term)</option>
        <option value="Diisopropylphosphate (S)">Diisopropylphosphate (S)</option>
        <option value="Diisopropylphosphate (T)">Diisopropylphosphate (T)</option>
        <option value="Diisopropylphosphate (Y)">Diisopropylphosphate (Y)</option>
        <option value="DiLeu4plex (K)">DiLeu4plex (K)</option>
        <option value="DiLeu4plex (N-term)">DiLeu4plex (N-term)</option>
        <option value="DiLeu4plex (Y)">DiLeu4plex (Y)</option>
        <option value="DiLeu4plex115 (K)">DiLeu4plex115 (K)</option>
        <option value="DiLeu4plex115 (N-term)">DiLeu4plex115 (N-term)</option>
        <option value="DiLeu4plex115 (Y)">DiLeu4plex115 (Y)</option>
        <option value="DiLeu4plex117 (K)">DiLeu4plex117 (K)</option>
        <option value="DiLeu4plex117 (N-term)">DiLeu4plex117 (N-term)</option>
        <option value="DiLeu4plex117 (Y)">DiLeu4plex117 (Y)</option>
        <option value="DiLeu4plex118 (K)">DiLeu4plex118 (K)</option>
        <option value="DiLeu4plex118 (N-term)">DiLeu4plex118 (N-term)</option>
        <option value="DiLeu4plex118 (Y)">DiLeu4plex118 (Y)</option>
        <option value="Dimethyl (K)">Dimethyl (K)</option>
        <option value="Dimethyl (N)">Dimethyl (N)</option>
        <option value="Dimethyl (N-term)">Dimethyl (N-term)</option>
        <option value="Dimethyl (Protein N-term P)">Dimethyl (Protein N-term P)</option>
        <option value="Dimethyl (Protein N-term)">Dimethyl (Protein N-term)</option>
        <option value="Dimethyl (R)">Dimethyl (R)</option>
        <option value="Dimethyl:2H(2)13C (K)">Dimethyl:2H(2)13C (K)</option>
        <option value="Dimethyl:2H(2)13C (N)">Dimethyl:2H(2)13C (N)</option>
        <option value="Dimethyl:2H(2)13C (N-term)">Dimethyl:2H(2)13C (N-term)</option>
        <option value="Dimethyl:2H(2)13C (Protein N-term P)">Dimethyl:2H(2)13C (Protein N-term P)</option>
        <option value="Dimethyl:2H(2)13C (R)">Dimethyl:2H(2)13C (R)</option>
        <option value="Dimethyl:2H(4) (K)">Dimethyl:2H(4) (K)</option>
        <option value="Dimethyl:2H(4) (N-term)">Dimethyl:2H(4) (N-term)</option>
        <option value="Dimethyl:2H(4) (Protein N-term)">Dimethyl:2H(4) (Protein N-term)</option>
        <option value="Dimethyl:2H(4) (R)">Dimethyl:2H(4) (R)</option>
        <option value="Dimethyl:2H(4)13C(2) (K)">Dimethyl:2H(4)13C(2) (K)</option>
        <option value="Dimethyl:2H(4)13C(2) (N-term)">Dimethyl:2H(4)13C(2) (N-term)</option>
        <option value="Dimethyl:2H(4)13C(2) (Protein N-term)">Dimethyl:2H(4)13C(2) (Protein N-term)</option>
        <option value="Dimethyl:2H(4)13C(2) (R)">Dimethyl:2H(4)13C(2) (R)</option>
        <option value="Dimethyl:2H(6) (K)">Dimethyl:2H(6) (K)</option>
        <option value="Dimethyl:2H(6) (N-term)">Dimethyl:2H(6) (N-term)</option>
        <option value="Dimethyl:2H(6) (R)">Dimethyl:2H(6) (R)</option>
        <option value="Dimethyl:2H(6)13C(2) (K)">Dimethyl:2H(6)13C(2) (K)</option>
        <option value="Dimethyl:2H(6)13C(2) (N-term)">Dimethyl:2H(6)13C(2) (N-term)</option>
        <option value="Dimethyl:2H(6)13C(2) (Protein N-term)">Dimethyl:2H(6)13C(2) (Protein N-term)</option>
        <option value="Dimethyl:2H(6)13C(2) (R)">Dimethyl:2H(6)13C(2) (R)</option>
        <option value="DimethylamineGMBS (C)">DimethylamineGMBS (C)</option>
        <option value="Dimethylaminoethyl (C)">Dimethylaminoethyl (C)</option>
        <option value="DimethylArsino (C)">DimethylArsino (C)</option>
        <option value="Dimethylphosphothione (C)">Dimethylphosphothione (C)</option>
        <option value="Dimethylphosphothione (H)">Dimethylphosphothione (H)</option>
        <option value="Dimethylphosphothione (K)">Dimethylphosphothione (K)</option>
        <option value="Dimethylphosphothione (S)">Dimethylphosphothione (S)</option>
        <option value="Dimethylphosphothione (T)">Dimethylphosphothione (T)</option>
        <option value="Dimethylphosphothione (Y)">Dimethylphosphothione (Y)</option>
        <option value="DimethylpyrroleAdduct (K)">DimethylpyrroleAdduct (K)</option>
        <option value="Dioxidation (C)">Dioxidation (C)</option>
        <option value="Dioxidation (E)">Dioxidation (E)</option>
        <option value="Dioxidation (F)">Dioxidation (F)</option>
        <option value="Dioxidation (I)">Dioxidation (I)</option>
        <option value="Dioxidation (K)">Dioxidation (K)</option>
        <option value="Dioxidation (L)">Dioxidation (L)</option>
        <option value="Dioxidation (M)">Dioxidation (M)</option>
        <option value="Dioxidation (P)">Dioxidation (P)</option>
        <option value="Dioxidation (R)">Dioxidation (R)</option>
        <option value="Dioxidation (U)">Dioxidation (U)</option>
        <option value="Dioxidation (V)">Dioxidation (V)</option>
        <option value="Dioxidation (W)">Dioxidation (W)</option>
        <option value="Dioxidation (Y)">Dioxidation (Y)</option>
        <option value="Diphthamide (H)">Diphthamide (H)</option>
        <option value="Dipyridyl (C)">Dipyridyl (C)</option>
        <option value="Dipyrrolylmethanemethyl (C)">Dipyrrolylmethanemethyl (C)</option>
        <option value="DMPO (C)">DMPO (C)</option>
        <option value="DMPO (H)">DMPO (H)</option>
        <option value="DMPO (Y)">DMPO (Y)</option>
        <option value="DNCB_hapten (C)">DNCB_hapten (C)</option>
        <option value="DNCB_hapten (H)">DNCB_hapten (H)</option>
        <option value="DNCB_hapten (K)">DNCB_hapten (K)</option>
        <option value="DNCB_hapten (Y)">DNCB_hapten (Y)</option>
        <option value="dNIC (K)">dNIC (K)</option>
        <option value="dNIC (N-term)">dNIC (N-term)</option>
        <option value="DNPS (C)">DNPS (C)</option>
        <option value="DNPS (W)">DNPS (W)</option>
        <option value="DTT (C)">DTT (C)</option>
        <option value="DyLight-maleimide (C)">DyLight-maleimide (C)</option>
        <option value="DYn-2 (C)">DYn-2 (C)</option>
        <option value="EDEDTIDVFQQQTGG (K)">EDEDTIDVFQQQTGG (K)</option>
        <option value="EDT-iodoacetyl-PEO-biotin (S)">EDT-iodoacetyl-PEO-biotin (S)</option>
        <option value="EDT-iodoacetyl-PEO-biotin (T)">EDT-iodoacetyl-PEO-biotin (T)</option>
        <option value="EDT-maleimide-PEO-biotin (S)">EDT-maleimide-PEO-biotin (S)</option>
        <option value="EDT-maleimide-PEO-biotin (T)">EDT-maleimide-PEO-biotin (T)</option>
        <option value="EEEDVIEVYQEQTGG (K)">EEEDVIEVYQEQTGG (K)</option>
        <option value="EGCG1 (C)">EGCG1 (C)</option>
        <option value="EGCG2 (C)">EGCG2 (C)</option>
        <option value="EHD-diphenylpentanone (C)">EHD-diphenylpentanone (C)</option>
        <option value="EHD-diphenylpentanone (M)">EHD-diphenylpentanone (M)</option>
        <option value="EQAT (C)">EQAT (C)</option>
        <option value="EQAT:2H(5) (C)">EQAT:2H(5) (C)</option>
        <option value="EQIGG (K)">EQIGG (K)</option>
        <option value="ESP (K)">ESP (K)</option>
        <option value="ESP (N-term)">ESP (N-term)</option>
        <option value="ESP:2H(10) (K)">ESP:2H(10) (K)</option>
        <option value="ESP:2H(10) (N-term)">ESP:2H(10) (N-term)</option>
        <option value="Ethanedithiol (S)">Ethanedithiol (S)</option>
        <option value="Ethanedithiol (T)">Ethanedithiol (T)</option>
        <option value="Ethanolamine (C)">Ethanolamine (C)</option>
        <option value="Ethanolamine (C-term)">Ethanolamine (C-term)</option>
        <option value="Ethanolamine (D)">Ethanolamine (D)</option>
        <option value="Ethanolamine (E)">Ethanolamine (E)</option>
        <option value="Ethanolyl (C)">Ethanolyl (C)</option>
        <option value="Ethanolyl (K)">Ethanolyl (K)</option>
        <option value="Ethanolyl (R)">Ethanolyl (R)</option>
        <option value="Ethyl (C-term)">Ethyl (C-term)</option>
        <option value="Ethyl (D)">Ethyl (D)</option>
        <option value="Ethyl (E)">Ethyl (E)</option>
        <option value="Ethyl (K)">Ethyl (K)</option>
        <option value="Ethyl (N-term)">Ethyl (N-term)</option>
        <option value="Ethyl (Protein N-term)">Ethyl (Protein N-term)</option>
        <option value="Ethyl+Deamidated (N)">Ethyl+Deamidated (N)</option>
        <option value="Ethyl+Deamidated (Q)">Ethyl+Deamidated (Q)</option>
        <option value="ethylamino (S)">ethylamino (S)</option>
        <option value="ethylamino (T)">ethylamino (T)</option>
        <option value="Ethylphosphate (K)">Ethylphosphate (K)</option>
        <option value="Ethylphosphate (N-term)">Ethylphosphate (N-term)</option>
        <option value="Ethylphosphate (S)">Ethylphosphate (S)</option>
        <option value="Ethylphosphate (T)">Ethylphosphate (T)</option>
        <option value="Ethylphosphate (Y)">Ethylphosphate (Y)</option>
        <option value="ethylsulfonylethyl (C)">ethylsulfonylethyl (C)</option>
        <option value="ethylsulfonylethyl (H)">ethylsulfonylethyl (H)</option>
        <option value="ethylsulfonylethyl (K)">ethylsulfonylethyl (K)</option>
        <option value="ExacTagAmine (K)">ExacTagAmine (K)</option>
        <option value="ExacTagThiol (C)">ExacTagThiol (C)</option>
        <option value="FAD (C)">FAD (C)</option>
        <option value="FAD (H)">FAD (H)</option>
        <option value="FAD (Y)">FAD (Y)</option>
        <option value="Farnesyl (C)">Farnesyl (C)</option>
        <option value="Fluorescein (C)">Fluorescein (C)</option>
        <option value="Fluorescein-tyramine (Y)">Fluorescein-tyramine (Y)</option>
        <option value="Fluoro (A)">Fluoro (A)</option>
        <option value="Fluoro (F)">Fluoro (F)</option>
        <option value="Fluoro (W)">Fluoro (W)</option>
        <option value="Fluoro (Y)">Fluoro (Y)</option>
        <option value="FMN (S)">FMN (S)</option>
        <option value="FMN (T)">FMN (T)</option>
        <option value="FMNC (C)">FMNC (C)</option>
        <option value="FMNH (C)">FMNH (C)</option>
        <option value="FMNH (H)">FMNH (H)</option>
        <option value="FNEM (C)">FNEM (C)</option>
        <option value="Formyl (K)">Formyl (K)</option>
        <option value="Formyl (N-term)">Formyl (N-term)</option>
        <option value="Formyl (Protein N-term)">Formyl (Protein N-term)</option>
        <option value="Formyl (S)">Formyl (S)</option>
        <option value="Formyl (T)">Formyl (T)</option>
        <option value="Formylasparagine (H)">Formylasparagine (H)</option>
        <option value="FormylMet (Protein N-term)">FormylMet (Protein N-term)</option>
        <option value="FP-Biotin (K)">FP-Biotin (K)</option>
        <option value="FP-Biotin (S)">FP-Biotin (S)</option>
        <option value="FP-Biotin (T)">FP-Biotin (T)</option>
        <option value="FP-Biotin (Y)">FP-Biotin (Y)</option>
        <option value="FTC (C)">FTC (C)</option>
        <option value="FTC (K)">FTC (K)</option>
        <option value="FTC (P)">FTC (P)</option>
        <option value="FTC (R)">FTC (R)</option>
        <option value="FTC (S)">FTC (S)</option>
        <option value="Furan (Y)">Furan (Y)</option>
        <option value="G-H1 (R)">G-H1 (R)</option>
        <option value="Galactosyl (K)">Galactosyl (K)</option>
        <option value="Galactosyl (N-term)">Galactosyl (N-term)</option>
        <option value="GEE (Q)">GEE (Q)</option>
        <option value="GeranylGeranyl (C)">GeranylGeranyl (C)</option>
        <option value="GG (C)">GG (C)</option>
        <option value="GG (K)">GG (K)</option>
        <option value="GG (Protein N-term)">GG (Protein N-term)</option>
        <option value="GG (S)">GG (S)</option>
        <option value="GG (T)">GG (T)</option>
        <option value="GGQ (K)">GGQ (K)</option>
        <option value="GIST-Quat (K)">GIST-Quat (K)</option>
        <option value="GIST-Quat (N-term)">GIST-Quat (N-term)</option>
        <option value="GIST-Quat:2H(3) (K)">GIST-Quat:2H(3) (K)</option>
        <option value="GIST-Quat:2H(3) (N-term)">GIST-Quat:2H(3) (N-term)</option>
        <option value="GIST-Quat:2H(6) (K)">GIST-Quat:2H(6) (K)</option>
        <option value="GIST-Quat:2H(6) (N-term)">GIST-Quat:2H(6) (N-term)</option>
        <option value="GIST-Quat:2H(9) (K)">GIST-Quat:2H(9) (K)</option>
        <option value="GIST-Quat:2H(9) (N-term)">GIST-Quat:2H(9) (N-term)</option>
        <option value="Gln-&gt;Ala (Q)">Gln-&gt;Ala (Q)</option>
        <option value="Gln-&gt;Arg (Q)">Gln-&gt;Arg (Q)</option>
        <option value="Gln-&gt;Asn (Q)">Gln-&gt;Asn (Q)</option>
        <option value="Gln-&gt;Asp (Q)">Gln-&gt;Asp (Q)</option>
        <option value="Gln-&gt;Cys (Q)">Gln-&gt;Cys (Q)</option>
        <option value="Gln-&gt;Glu (Q)">Gln-&gt;Glu (Q)</option>
        <option value="Gln-&gt;Gly (Q)">Gln-&gt;Gly (Q)</option>
        <option value="Gln-&gt;His (Q)">Gln-&gt;His (Q)</option>
        <option value="Gln-&gt;Lys (Q)">Gln-&gt;Lys (Q)</option>
        <option value="Gln-&gt;Met (Q)">Gln-&gt;Met (Q)</option>
        <option value="Gln-&gt;Phe (Q)">Gln-&gt;Phe (Q)</option>
        <option value="Gln-&gt;Pro (Q)">Gln-&gt;Pro (Q)</option>
        <option value="Gln-&gt;pyro-Glu (N-term Q)">Gln-&gt;pyro-Glu (N-term Q)</option>
        <option value="Gln-&gt;Ser (Q)">Gln-&gt;Ser (Q)</option>
        <option value="Gln-&gt;Thr (Q)">Gln-&gt;Thr (Q)</option>
        <option value="Gln-&gt;Trp (Q)">Gln-&gt;Trp (Q)</option>
        <option value="Gln-&gt;Tyr (Q)">Gln-&gt;Tyr (Q)</option>
        <option value="Gln-&gt;Val (Q)">Gln-&gt;Val (Q)</option>
        <option value="Gln-&gt;Xle (Q)">Gln-&gt;Xle (Q)</option>
        <option value="Glu (E)">Glu (E)</option>
        <option value="Glu (Protein C-term)">Glu (Protein C-term)</option>
        <option value="Glu+O(2) (H)">Glu+O(2) (H)</option>
        <option value="Glu-&gt;Ala (E)">Glu-&gt;Ala (E)</option>
        <option value="Glu-&gt;Arg (E)">Glu-&gt;Arg (E)</option>
        <option value="Glu-&gt;Asn (E)">Glu-&gt;Asn (E)</option>
        <option value="Glu-&gt;Asp (E)">Glu-&gt;Asp (E)</option>
        <option value="Glu-&gt;Cys (E)">Glu-&gt;Cys (E)</option>
        <option value="Glu-&gt;Gln (E)">Glu-&gt;Gln (E)</option>
        <option value="Glu-&gt;Gly (E)">Glu-&gt;Gly (E)</option>
        <option value="Glu-&gt;His (E)">Glu-&gt;His (E)</option>
        <option value="Glu-&gt;Lys (E)">Glu-&gt;Lys (E)</option>
        <option value="Glu-&gt;Met (E)">Glu-&gt;Met (E)</option>
        <option value="Glu-&gt;Phe (E)">Glu-&gt;Phe (E)</option>
        <option value="Glu-&gt;Pro (E)">Glu-&gt;Pro (E)</option>
        <option value="Glu-&gt;pyro-Glu (N-term E)">Glu-&gt;pyro-Glu (N-term E)</option>
        <option value="Glu-&gt;pyro-Glu+Methyl (N-term E)">Glu-&gt;pyro-Glu+Methyl (N-term E)</option>
        <option value="Glu-&gt;pyro-Glu+Methyl:2H(2)13C(1) (N-term E)">Glu-&gt;pyro-Glu+Methyl:2H(2)13C(1) (N-term E)</option>
        <option value="Glu-&gt;Ser (E)">Glu-&gt;Ser (E)</option>
        <option value="Glu-&gt;Thr (E)">Glu-&gt;Thr (E)</option>
        <option value="Glu-&gt;Trp (E)">Glu-&gt;Trp (E)</option>
        <option value="Glu-&gt;Tyr (E)">Glu-&gt;Tyr (E)</option>
        <option value="Glu-&gt;Val (E)">Glu-&gt;Val (E)</option>
        <option value="Glu-&gt;Xle (E)">Glu-&gt;Xle (E)</option>
        <option value="glucosone (R)">glucosone (R)</option>
        <option value="Glucosylgalactosyl (K)">Glucosylgalactosyl (K)</option>
        <option value="Glucuronyl (Protein N-term)">Glucuronyl (Protein N-term)</option>
        <option value="Glucuronyl (S)">Glucuronyl (S)</option>
        <option value="Glucuronyl (T)">Glucuronyl (T)</option>
        <option value="GluGlu (E)">GluGlu (E)</option>
        <option value="GluGlu (Protein C-term)">GluGlu (Protein C-term)</option>
        <option value="GluGluGlu (E)">GluGluGlu (E)</option>
        <option value="GluGluGlu (Protein C-term)">GluGluGlu (Protein C-term)</option>
        <option value="GluGluGluGlu (E)">GluGluGluGlu (E)</option>
        <option value="GluGluGluGlu (Protein C-term)">GluGluGluGlu (Protein C-term)</option>
        <option value="Gluratylation (K)">Gluratylation (K)</option>
        <option value="Glutathione (C)">Glutathione (C)</option>
        <option value="Gly (K)">Gly (K)</option>
        <option value="Gly (S)">Gly (S)</option>
        <option value="Gly (T)">Gly (T)</option>
        <option value="Gly+O(2) (H)">Gly+O(2) (H)</option>
        <option value="Gly-&gt;Ala (G)">Gly-&gt;Ala (G)</option>
        <option value="Gly-&gt;Arg (G)">Gly-&gt;Arg (G)</option>
        <option value="Gly-&gt;Asn (G)">Gly-&gt;Asn (G)</option>
        <option value="Gly-&gt;Asp (G)">Gly-&gt;Asp (G)</option>
        <option value="Gly-&gt;Cys (G)">Gly-&gt;Cys (G)</option>
        <option value="Gly-&gt;Gln (G)">Gly-&gt;Gln (G)</option>
        <option value="Gly-&gt;Glu (G)">Gly-&gt;Glu (G)</option>
        <option value="Gly-&gt;His (G)">Gly-&gt;His (G)</option>
        <option value="Gly-&gt;Lys (G)">Gly-&gt;Lys (G)</option>
        <option value="Gly-&gt;Met (G)">Gly-&gt;Met (G)</option>
        <option value="Gly-&gt;Phe (G)">Gly-&gt;Phe (G)</option>
        <option value="Gly-&gt;Pro (G)">Gly-&gt;Pro (G)</option>
        <option value="Gly-&gt;Ser (G)">Gly-&gt;Ser (G)</option>
        <option value="Gly-&gt;Thr (G)">Gly-&gt;Thr (G)</option>
        <option value="Gly-&gt;Trp (G)">Gly-&gt;Trp (G)</option>
        <option value="Gly-&gt;Tyr (G)">Gly-&gt;Tyr (G)</option>
        <option value="Gly-&gt;Val (G)">Gly-&gt;Val (G)</option>
        <option value="Gly-&gt;Xle (G)">Gly-&gt;Xle (G)</option>
        <option value="Gly-loss+Amide (C-term G)">Gly-loss+Amide (C-term G)</option>
        <option value="Glycerophospho (S)">Glycerophospho (S)</option>
        <option value="GlycerylPE (E)">GlycerylPE (E)</option>
        <option value="glycidamide (K)">glycidamide (K)</option>
        <option value="glycidamide (N-term)">glycidamide (N-term)</option>
        <option value="Glycosyl (P)">Glycosyl (P)</option>
        <option value="glyoxalAGE (R)">glyoxalAGE (R)</option>
        <option value="GNLLFLACYCIGG (K)">GNLLFLACYCIGG (K)</option>
        <option value="GPIanchor (Protein C-term)">GPIanchor (Protein C-term)</option>
        <option value="Guanidinyl (K)">Guanidinyl (K)</option>
        <option value="Guanidinyl (N-term)">Guanidinyl (N-term)</option>
        <option value="Haloxon (C)">Haloxon (C)</option>
        <option value="Haloxon (H)">Haloxon (H)</option>
        <option value="Haloxon (K)">Haloxon (K)</option>
        <option value="Haloxon (S)">Haloxon (S)</option>
        <option value="Haloxon (T)">Haloxon (T)</option>
        <option value="Haloxon (Y)">Haloxon (Y)</option>
        <option value="HCysteinyl (C)">HCysteinyl (C)</option>
        <option value="HCysThiolactone (K)">HCysThiolactone (K)</option>
        <option value="Heme (C)">Heme (C)</option>
        <option value="Heme (H)">Heme (H)</option>
        <option value="Hep (K)">Hep (K)</option>
        <option value="Hep (N)">Hep (N)</option>
        <option value="Hep (Q)">Hep (Q)</option>
        <option value="Hep (R)">Hep (R)</option>
        <option value="Hep (S)">Hep (S)</option>
        <option value="Hep (T)">Hep (T)</option>
        <option value="Hex (C)">Hex (C)</option>
        <option value="Hex (K)">Hex (K)</option>
        <option value="Hex (N)">Hex (N)</option>
        <option value="Hex (N-term)">Hex (N-term)</option>
        <option value="Hex (R)">Hex (R)</option>
        <option value="Hex (S)">Hex (S)</option>
        <option value="Hex (T)">Hex (T)</option>
        <option value="Hex (W)">Hex (W)</option>
        <option value="Hex (Y)">Hex (Y)</option>
        <option value="Hex(1)HexA(1) (S)">Hex(1)HexA(1) (S)</option>
        <option value="Hex(1)HexA(1) (T)">Hex(1)HexA(1) (T)</option>
        <option value="Hex(1)HexA(1)HexNAc(1) (S)">Hex(1)HexA(1)HexNAc(1) (S)</option>
        <option value="Hex(1)HexA(1)HexNAc(1) (T)">Hex(1)HexA(1)HexNAc(1) (T)</option>
        <option value="Hex(1)HexA(1)HexNAc(2) (S)">Hex(1)HexA(1)HexNAc(2) (S)</option>
        <option value="Hex(1)HexA(1)HexNAc(2) (T)">Hex(1)HexA(1)HexNAc(2) (T)</option>
        <option value="Hex(1)HexNAc(1) (N)">Hex(1)HexNAc(1) (N)</option>
        <option value="Hex(1)HexNAc(1) (S)">Hex(1)HexNAc(1) (S)</option>
        <option value="Hex(1)HexNAc(1) (T)">Hex(1)HexNAc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (N)">Hex(1)HexNAc(1)dHex(1) (N)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (S)">Hex(1)HexNAc(1)dHex(1) (S)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (T)">Hex(1)HexNAc(1)dHex(1) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(1) (S)">Hex(1)HexNAc(1)dHex(1)Me(1) (S)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(1) (T)">Hex(1)HexNAc(1)dHex(1)Me(1) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(2) (S)">Hex(1)HexNAc(1)dHex(1)Me(2) (S)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(2) (T)">Hex(1)HexNAc(1)dHex(1)Me(2) (T)</option>
        <option value="Hex(1)HexNAc(1)Kdn(1)Sulf(1) (S)">Hex(1)HexNAc(1)Kdn(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(1)Kdn(1)Sulf(1) (T)">Hex(1)HexNAc(1)Kdn(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (N)">Hex(1)HexNAc(1)NeuAc(1) (N)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (S)">Hex(1)HexNAc(1)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (T)">Hex(1)HexNAc(1)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Ac(1) (S)">Hex(1)HexNAc(1)NeuAc(1)Ac(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Ac(1) (T)">Hex(1)HexNAc(1)NeuAc(1)Ac(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (S)">Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (T)">Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (S)">Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (T)">Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (N)">Hex(1)HexNAc(1)NeuAc(2) (N)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (S)">Hex(1)HexNAc(1)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (T)">Hex(1)HexNAc(1)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(1) (S)">Hex(1)HexNAc(1)NeuAc(2)Ac(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(1) (T)">Hex(1)HexNAc(1)NeuAc(2)Ac(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(2) (S)">Hex(1)HexNAc(1)NeuAc(2)Ac(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(2) (T)">Hex(1)HexNAc(1)NeuAc(2)Ac(2) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(3) (S)">Hex(1)HexNAc(1)NeuAc(3) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(3) (T)">Hex(1)HexNAc(1)NeuAc(3) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(1) (S)">Hex(1)HexNAc(1)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(1) (T)">Hex(1)HexNAc(1)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(2) (S)">Hex(1)HexNAc(1)NeuGc(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(2) (T)">Hex(1)HexNAc(1)NeuGc(2) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(3) (S)">Hex(1)HexNAc(1)NeuGc(3) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(3) (T)">Hex(1)HexNAc(1)NeuGc(3) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(4) (S)">Hex(1)HexNAc(1)NeuGc(4) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(4) (T)">Hex(1)HexNAc(1)NeuGc(4) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(5) (S)">Hex(1)HexNAc(1)NeuGc(5) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(5) (T)">Hex(1)HexNAc(1)NeuGc(5) (T)</option>
        <option value="Hex(1)HexNAc(1)Phos(1) (S)">Hex(1)HexNAc(1)Phos(1) (S)</option>
        <option value="Hex(1)HexNAc(1)Phos(1) (T)">Hex(1)HexNAc(1)Phos(1) (T)</option>
        <option value="Hex(1)HexNAc(1)Sulf(1) (S)">Hex(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(1)Sulf(1) (T)">Hex(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2) (N)">Hex(1)HexNAc(2) (N)</option>
        <option value="Hex(1)HexNAc(2) (S)">Hex(1)HexNAc(2) (S)</option>
        <option value="Hex(1)HexNAc(2) (T)">Hex(1)HexNAc(2) (T)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (N)">Hex(1)HexNAc(2)dHex(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (S)">Hex(1)HexNAc(2)dHex(1) (S)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (T)">Hex(1)HexNAc(2)dHex(1) (T)</option>
        <option value="Hex(1)HexNAc(2)dHex(1)Pent(1) (N)">Hex(1)HexNAc(2)dHex(1)Pent(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (N)">Hex(1)HexNAc(2)dHex(2) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (S)">Hex(1)HexNAc(2)dHex(2) (S)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (T)">Hex(1)HexNAc(2)dHex(2) (T)</option>
        <option value="Hex(1)HexNAc(2)dHex(2)Sulf(1) (S)">Hex(1)HexNAc(2)dHex(2)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)dHex(2)Sulf(1) (T)">Hex(1)HexNAc(2)dHex(2)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1) (S)">Hex(1)HexNAc(2)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1) (T)">Hex(1)HexNAc(2)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)">Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)">Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2) (S)">Hex(1)HexNAc(2)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2) (T)">Hex(1)HexNAc(2)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (S)">Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (T)">Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuGc(1) (S)">Hex(1)HexNAc(2)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuGc(1) (T)">Hex(1)HexNAc(2)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(2)Pent(1) (N)">Hex(1)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(1)HexNAc(2)Sulf(1) (S)">Hex(1)HexNAc(2)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)Sulf(1) (T)">Hex(1)HexNAc(2)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(3) (S)">Hex(1)HexNAc(3) (S)</option>
        <option value="Hex(1)HexNAc(3) (T)">Hex(1)HexNAc(3) (T)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(1) (S)">Hex(1)HexNAc(3)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(1) (T)">Hex(1)HexNAc(3)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(2) (S)">Hex(1)HexNAc(3)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(2) (T)">Hex(1)HexNAc(3)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(3)NeuGc(1) (S)">Hex(1)HexNAc(3)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(3)NeuGc(1) (T)">Hex(1)HexNAc(3)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(3)Sulf(1) (S)">Hex(1)HexNAc(3)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(3)Sulf(1) (T)">Hex(1)HexNAc(3)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(4)dHex(1)Sulf(1) (S)">Hex(1)HexNAc(4)dHex(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(4)dHex(1)Sulf(1) (T)">Hex(1)HexNAc(4)dHex(1)Sulf(1) (T)</option>
        <option value="Hex(1)NeuAc(1) (S)">Hex(1)NeuAc(1) (S)</option>
        <option value="Hex(1)NeuAc(1) (T)">Hex(1)NeuAc(1) (T)</option>
        <option value="Hex(1)NeuAc(1)Pent(1) (S)">Hex(1)NeuAc(1)Pent(1) (S)</option>
        <option value="Hex(1)NeuAc(1)Pent(1) (T)">Hex(1)NeuAc(1)Pent(1) (T)</option>
        <option value="Hex(1)NeuGc(1) (S)">Hex(1)NeuGc(1) (S)</option>
        <option value="Hex(1)NeuGc(1) (T)">Hex(1)NeuGc(1) (T)</option>
        <option value="Hex(1)Pent(1) (S)">Hex(1)Pent(1) (S)</option>
        <option value="Hex(1)Pent(1) (T)">Hex(1)Pent(1) (T)</option>
        <option value="Hex(1)Pent(2) (S)">Hex(1)Pent(2) (S)</option>
        <option value="Hex(1)Pent(2) (T)">Hex(1)Pent(2) (T)</option>
        <option value="Hex(1)Pent(2)Me(1) (S)">Hex(1)Pent(2)Me(1) (S)</option>
        <option value="Hex(1)Pent(2)Me(1) (T)">Hex(1)Pent(2)Me(1) (T)</option>
        <option value="Hex(1)Pent(3) (S)">Hex(1)Pent(3) (S)</option>
        <option value="Hex(1)Pent(3) (T)">Hex(1)Pent(3) (T)</option>
        <option value="Hex(1)Pent(3)Me(1) (S)">Hex(1)Pent(3)Me(1) (S)</option>
        <option value="Hex(1)Pent(3)Me(1) (T)">Hex(1)Pent(3)Me(1) (T)</option>
        <option value="Hex(10)HexNAc(1) (N)">Hex(10)HexNAc(1) (N)</option>
        <option value="Hex(10)Phos(3) (S)">Hex(10)Phos(3) (S)</option>
        <option value="Hex(10)Phos(3) (T)">Hex(10)Phos(3) (T)</option>
        <option value="Hex(2) (K)">Hex(2) (K)</option>
        <option value="Hex(2) (R)">Hex(2) (R)</option>
        <option value="Hex(2) (S)">Hex(2) (S)</option>
        <option value="Hex(2) (T)">Hex(2) (T)</option>
        <option value="Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)">Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)">Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (S)">Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (T)">Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexA(1)Pent(1)Sulf(1) (S)">Hex(2)HexA(1)Pent(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexA(1)Pent(1)Sulf(1) (T)">Hex(2)HexA(1)Pent(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(1) (N)">Hex(2)HexNAc(1) (N)</option>
        <option value="Hex(2)HexNAc(1) (S)">Hex(2)HexNAc(1) (S)</option>
        <option value="Hex(2)HexNAc(1) (T)">Hex(2)HexNAc(1) (T)</option>
        <option value="Hex(2)HexNAc(1)Me(1) (S)">Hex(2)HexNAc(1)Me(1) (S)</option>
        <option value="Hex(2)HexNAc(1)Me(1) (T)">Hex(2)HexNAc(1)Me(1) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(1) (S)">Hex(2)HexNAc(1)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(1) (T)">Hex(2)HexNAc(1)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(2) (S)">Hex(2)HexNAc(1)NeuGc(2) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(2) (T)">Hex(2)HexNAc(1)NeuGc(2) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(3) (S)">Hex(2)HexNAc(1)NeuGc(3) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(3) (T)">Hex(2)HexNAc(1)NeuGc(3) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(4) (S)">Hex(2)HexNAc(1)NeuGc(4) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(4) (T)">Hex(2)HexNAc(1)NeuGc(4) (T)</option>
        <option value="Hex(2)HexNAc(1)Pent(1)HexA(1) (S)">Hex(2)HexNAc(1)Pent(1)HexA(1) (S)</option>
        <option value="Hex(2)HexNAc(1)Pent(1)HexA(1) (T)">Hex(2)HexNAc(1)Pent(1)HexA(1) (T)</option>
        <option value="Hex(2)HexNAc(1)Sulf(1) (S)">Hex(2)HexNAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(1)Sulf(1) (T)">Hex(2)HexNAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(2) (N)">Hex(2)HexNAc(2) (N)</option>
        <option value="Hex(2)HexNAc(2) (S)">Hex(2)HexNAc(2) (S)</option>
        <option value="Hex(2)HexNAc(2) (T)">Hex(2)HexNAc(2) (T)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (N)">Hex(2)HexNAc(2)dHex(1) (N)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (S)">Hex(2)HexNAc(2)dHex(1) (S)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (T)">Hex(2)HexNAc(2)dHex(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1) (N)">Hex(2)HexNAc(2)NeuAc(1) (N)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1) (S)">Hex(2)HexNAc(2)NeuAc(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1) (T)">Hex(2)HexNAc(2)NeuAc(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)">Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)">Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2) (S)">Hex(2)HexNAc(2)NeuAc(2) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2) (T)">Hex(2)HexNAc(2)NeuAc(2) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)">Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)">Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuGc(1) (S)">Hex(2)HexNAc(2)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuGc(1) (T)">Hex(2)HexNAc(2)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(2)Pent(1) (N)">Hex(2)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(2)HexNAc(2)Sulf(1) (S)">Hex(2)HexNAc(2)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(2)Sulf(1) (T)">Hex(2)HexNAc(2)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(3) (N)">Hex(2)HexNAc(3) (N)</option>
        <option value="Hex(2)HexNAc(3) (S)">Hex(2)HexNAc(3) (S)</option>
        <option value="Hex(2)HexNAc(3) (T)">Hex(2)HexNAc(3) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (S)">Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (T)">Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (S)">Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (T)">Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(2) (S)">Hex(2)HexNAc(3)NeuAc(2) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(2) (T)">Hex(2)HexNAc(3)NeuAc(2) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(3) (S)">Hex(2)HexNAc(3)NeuAc(3) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(3) (T)">Hex(2)HexNAc(3)NeuAc(3) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(1) (S)">Hex(2)HexNAc(3)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(1) (T)">Hex(2)HexNAc(3)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(2) (S)">Hex(2)HexNAc(3)NeuGc(2) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(2) (T)">Hex(2)HexNAc(3)NeuGc(2) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(3) (S)">Hex(2)HexNAc(3)NeuGc(3) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(3) (T)">Hex(2)HexNAc(3)NeuGc(3) (T)</option>
        <option value="Hex(2)HexNAc(3)Sulf(1) (S)">Hex(2)HexNAc(3)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(3)Sulf(1) (T)">Hex(2)HexNAc(3)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(4) (N)">Hex(2)HexNAc(4) (N)</option>
        <option value="Hex(2)HexNAc(4) (S)">Hex(2)HexNAc(4) (S)</option>
        <option value="Hex(2)HexNAc(4) (T)">Hex(2)HexNAc(4) (T)</option>
        <option value="Hex(2)HexNAc(4)NeuAc(1) (S)">Hex(2)HexNAc(4)NeuAc(1) (S)</option>
        <option value="Hex(2)HexNAc(4)NeuAc(1) (T)">Hex(2)HexNAc(4)NeuAc(1) (T)</option>
        <option value="Hex(2)HexNAc(5) (S)">Hex(2)HexNAc(5) (S)</option>
        <option value="Hex(2)HexNAc(5) (T)">Hex(2)HexNAc(5) (T)</option>
        <option value="Hex(2)NeuAc(1) (S)">Hex(2)NeuAc(1) (S)</option>
        <option value="Hex(2)NeuAc(1) (T)">Hex(2)NeuAc(1) (T)</option>
        <option value="Hex(2)Pent(2) (S)">Hex(2)Pent(2) (S)</option>
        <option value="Hex(2)Pent(2) (T)">Hex(2)Pent(2) (T)</option>
        <option value="Hex(2)Pent(2)Me(1) (S)">Hex(2)Pent(2)Me(1) (S)</option>
        <option value="Hex(2)Pent(2)Me(1) (T)">Hex(2)Pent(2)Me(1) (T)</option>
        <option value="Hex(2)Sulf(1) (S)">Hex(2)Sulf(1) (S)</option>
        <option value="Hex(2)Sulf(1) (T)">Hex(2)Sulf(1) (T)</option>
        <option value="Hex(3) (N)">Hex(3) (N)</option>
        <option value="Hex(3) (S)">Hex(3) (S)</option>
        <option value="Hex(3) (T)">Hex(3) (T)</option>
        <option value="Hex(3)HexNAc(1) (N)">Hex(3)HexNAc(1) (N)</option>
        <option value="Hex(3)HexNAc(1) (S)">Hex(3)HexNAc(1) (S)</option>
        <option value="Hex(3)HexNAc(1) (T)">Hex(3)HexNAc(1) (T)</option>
        <option value="Hex(3)HexNAc(1)HexA(1) (S)">Hex(3)HexNAc(1)HexA(1) (S)</option>
        <option value="Hex(3)HexNAc(1)HexA(1) (T)">Hex(3)HexNAc(1)HexA(1) (T)</option>
        <option value="Hex(3)HexNAc(1)Me(1) (S)">Hex(3)HexNAc(1)Me(1) (S)</option>
        <option value="Hex(3)HexNAc(1)Me(1) (T)">Hex(3)HexNAc(1)Me(1) (T)</option>
        <option value="Hex(3)HexNAc(1)Pent(1) (N)">Hex(3)HexNAc(1)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(2) (N)">Hex(3)HexNAc(2) (N)</option>
        <option value="Hex(3)HexNAc(2) (S)">Hex(3)HexNAc(2) (S)</option>
        <option value="Hex(3)HexNAc(2) (T)">Hex(3)HexNAc(2) (T)</option>
        <option value="Hex(3)HexNAc(2)NeuAc(1) (N)">Hex(3)HexNAc(2)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(2)NeuAc(2) (S)">Hex(3)HexNAc(2)NeuAc(2) (S)</option>
        <option value="Hex(3)HexNAc(2)NeuAc(2) (T)">Hex(3)HexNAc(2)NeuAc(2) (T)</option>
        <option value="Hex(3)HexNAc(2)Pent(1) (N)">Hex(3)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(2)Phos(1) (N)">Hex(3)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(3)HexNAc(3) (N)">Hex(3)HexNAc(3) (N)</option>
        <option value="Hex(3)HexNAc(3) (S)">Hex(3)HexNAc(3) (S)</option>
        <option value="Hex(3)HexNAc(3) (T)">Hex(3)HexNAc(3) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1) (S)">Hex(3)HexNAc(3)NeuAc(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1) (T)">Hex(3)HexNAc(3)NeuAc(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (S)">Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (T)">Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2) (S)">Hex(3)HexNAc(3)NeuAc(2) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2) (T)">Hex(3)HexNAc(3)NeuAc(2) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (S)">Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (T)">Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(3) (S)">Hex(3)HexNAc(3)NeuAc(3) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(3) (T)">Hex(3)HexNAc(3)NeuAc(3) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1) (S)">Hex(3)HexNAc(3)NeuGc(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1) (T)">Hex(3)HexNAc(3)NeuGc(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (S)">Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (T)">Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(3)Pent(1) (N)">Hex(3)HexNAc(3)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(3)Sulf(1) (N)">Hex(3)HexNAc(3)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(3)Sulf(1) (S)">Hex(3)HexNAc(3)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)Sulf(1) (T)">Hex(3)HexNAc(3)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(4) (N)">Hex(3)HexNAc(4) (N)</option>
        <option value="Hex(3)HexNAc(4) (S)">Hex(3)HexNAc(4) (S)</option>
        <option value="Hex(3)HexNAc(4) (T)">Hex(3)HexNAc(4) (T)</option>
        <option value="Hex(3)HexNAc(4)NeuAc(1) (N)">Hex(3)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(4)NeuAc(2) (N)">Hex(3)HexNAc(4)NeuAc(2) (N)</option>
        <option value="Hex(3)HexNAc(4)Pent(1) (N)">Hex(3)HexNAc(4)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(4)Sulf(1) (N)">Hex(3)HexNAc(4)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(5) (N)">Hex(3)HexNAc(5) (N)</option>
        <option value="Hex(3)HexNAc(5) (S)">Hex(3)HexNAc(5) (S)</option>
        <option value="Hex(3)HexNAc(5) (T)">Hex(3)HexNAc(5) (T)</option>
        <option value="Hex(3)HexNAc(5)NeuAc(1) (N)">Hex(3)HexNAc(5)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(5)Sulf(1) (N)">Hex(3)HexNAc(5)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(6) (N)">Hex(3)HexNAc(6) (N)</option>
        <option value="Hex(3)HexNAc(6) (S)">Hex(3)HexNAc(6) (S)</option>
        <option value="Hex(3)HexNAc(6) (T)">Hex(3)HexNAc(6) (T)</option>
        <option value="Hex(3)HexNAc(6)NeuAc(1) (N)">Hex(3)HexNAc(6)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(6)Sulf(1) (N)">Hex(3)HexNAc(6)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(6)Sulf(2) (N)">Hex(3)HexNAc(6)Sulf(2) (N)</option>
        <option value="Hex(3)HexNAc(7) (N)">Hex(3)HexNAc(7) (N)</option>
        <option value="Hex(3)HexNAc(7)Sulf(1) (N)">Hex(3)HexNAc(7)Sulf(1) (N)</option>
        <option value="Hex(4) (S)">Hex(4) (S)</option>
        <option value="Hex(4) (T)">Hex(4) (T)</option>
        <option value="Hex(4)HexA(1) (S)">Hex(4)HexA(1) (S)</option>
        <option value="Hex(4)HexA(1) (T)">Hex(4)HexA(1) (T)</option>
        <option value="Hex(4)HexA(1)HexNAc(1) (S)">Hex(4)HexA(1)HexNAc(1) (S)</option>
        <option value="Hex(4)HexA(1)HexNAc(1) (T)">Hex(4)HexA(1)HexNAc(1) (T)</option>
        <option value="Hex(4)HexNAc(1) (N)">Hex(4)HexNAc(1) (N)</option>
        <option value="Hex(4)HexNAc(1) (S)">Hex(4)HexNAc(1) (S)</option>
        <option value="Hex(4)HexNAc(1) (T)">Hex(4)HexNAc(1) (T)</option>
        <option value="Hex(4)HexNAc(2) (N)">Hex(4)HexNAc(2) (N)</option>
        <option value="Hex(4)HexNAc(2)NeuAc(1) (N)">Hex(4)HexNAc(2)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(2)NeuAc(1) (S)">Hex(4)HexNAc(2)NeuAc(1) (S)</option>
        <option value="Hex(4)HexNAc(2)NeuAc(1) (T)">Hex(4)HexNAc(2)NeuAc(1) (T)</option>
        <option value="Hex(4)HexNAc(2)Pent(1) (N)">Hex(4)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(3) (N)">Hex(4)HexNAc(3) (N)</option>
        <option value="Hex(4)HexNAc(3) (S)">Hex(4)HexNAc(3) (S)</option>
        <option value="Hex(4)HexNAc(3) (T)">Hex(4)HexNAc(3) (T)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(1) (N)">Hex(4)HexNAc(3)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(1) (S)">Hex(4)HexNAc(3)NeuAc(1) (S)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(1) (T)">Hex(4)HexNAc(3)NeuAc(1) (T)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(2) (N)">Hex(4)HexNAc(3)NeuAc(2) (N)</option>
        <option value="Hex(4)HexNAc(3)NeuGc(1) (N)">Hex(4)HexNAc(3)NeuGc(1) (N)</option>
        <option value="Hex(4)HexNAc(3)Pent(1) (N)">Hex(4)HexNAc(3)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(4) (N)">Hex(4)HexNAc(4) (N)</option>
        <option value="Hex(4)HexNAc(4) (S)">Hex(4)HexNAc(4) (S)</option>
        <option value="Hex(4)HexNAc(4) (T)">Hex(4)HexNAc(4) (T)</option>
        <option value="Hex(4)HexNAc(4)Me(2)Pent(1) (N)">Hex(4)HexNAc(4)Me(2)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1) (N)">Hex(4)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1) (S)">Hex(4)HexNAc(4)NeuAc(1) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1) (T)">Hex(4)HexNAc(4)NeuAc(1) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (S)">Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (T)">Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (S)">Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (T)">Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1) (N)">Hex(4)HexNAc(4)NeuGc(1) (N)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1) (S)">Hex(4)HexNAc(4)NeuGc(1) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1) (T)">Hex(4)HexNAc(4)NeuGc(1) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (S)">Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (T)">Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (T)</option>
        <option value="Hex(4)HexNAc(4)Pent(1) (N)">Hex(4)HexNAc(4)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(4)Sulf(1) (N)">Hex(4)HexNAc(4)Sulf(1) (N)</option>
        <option value="Hex(4)HexNAc(4)Sulf(2) (S)">Hex(4)HexNAc(4)Sulf(2) (S)</option>
        <option value="Hex(4)HexNAc(4)Sulf(2) (T)">Hex(4)HexNAc(4)Sulf(2) (T)</option>
        <option value="Hex(4)HexNAc(5) (N)">Hex(4)HexNAc(5) (N)</option>
        <option value="Hex(4)HexNAc(5)NeuAc(1) (N)">Hex(4)HexNAc(5)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(5)Sulf(1) (N)">Hex(4)HexNAc(5)Sulf(1) (N)</option>
        <option value="Hex(4)HexNAc(6) (N)">Hex(4)HexNAc(6) (N)</option>
        <option value="Hex(4)Phos(1) (S)">Hex(4)Phos(1) (S)</option>
        <option value="Hex(4)Phos(1) (T)">Hex(4)Phos(1) (T)</option>
        <option value="Hex(5) (S)">Hex(5) (S)</option>
        <option value="Hex(5) (T)">Hex(5) (T)</option>
        <option value="Hex(5)HexA(1) (S)">Hex(5)HexA(1) (S)</option>
        <option value="Hex(5)HexA(1) (T)">Hex(5)HexA(1) (T)</option>
        <option value="Hex(5)HexNAc(1) (N)">Hex(5)HexNAc(1) (N)</option>
        <option value="Hex(5)HexNAc(1) (S)">Hex(5)HexNAc(1) (S)</option>
        <option value="Hex(5)HexNAc(1) (T)">Hex(5)HexNAc(1) (T)</option>
        <option value="Hex(5)HexNAc(2) (N)">Hex(5)HexNAc(2) (N)</option>
        <option value="Hex(5)HexNAc(2)Phos(1) (N)">Hex(5)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(5)HexNAc(3) (N)">Hex(5)HexNAc(3) (N)</option>
        <option value="Hex(5)HexNAc(3)Pent(1) (N)">Hex(5)HexNAc(3)Pent(1) (N)</option>
        <option value="Hex(5)HexNAc(4) (N)">Hex(5)HexNAc(4) (N)</option>
        <option value="Hex(5)HexNAc(4) (S)">Hex(5)HexNAc(4) (S)</option>
        <option value="Hex(5)HexNAc(4) (T)">Hex(5)HexNAc(4) (T)</option>
        <option value="Hex(5)HexNAc(4)Me(2)Pent(1) (N)">Hex(5)HexNAc(4)Me(2)Pent(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1) (N)">Hex(5)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1)Ac(1) (N)">Hex(5)HexNAc(4)NeuAc(1)Ac(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1)Ac(2) (N)">Hex(5)HexNAc(4)NeuAc(1)Ac(2) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1)Sulf(1) (N)">Hex(5)HexNAc(4)NeuAc(1)Sulf(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(2) (N)">Hex(5)HexNAc(4)NeuAc(2) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuGc(1) (N)">Hex(5)HexNAc(4)NeuGc(1) (N)</option>
        <option value="Hex(5)HexNAc(4)Sulf(1) (N)">Hex(5)HexNAc(4)Sulf(1) (N)</option>
        <option value="Hex(5)HexNAc(5) (N)">Hex(5)HexNAc(5) (N)</option>
        <option value="Hex(5)HexNAc(5) (S)">Hex(5)HexNAc(5) (S)</option>
        <option value="Hex(5)HexNAc(5) (T)">Hex(5)HexNAc(5) (T)</option>
        <option value="Hex(5)Phos(1) (S)">Hex(5)Phos(1) (S)</option>
        <option value="Hex(5)Phos(1) (T)">Hex(5)Phos(1) (T)</option>
        <option value="Hex(5)Phos(3) (S)">Hex(5)Phos(3) (S)</option>
        <option value="Hex(5)Phos(3) (T)">Hex(5)Phos(3) (T)</option>
        <option value="Hex(6)HexNAc(1) (N)">Hex(6)HexNAc(1) (N)</option>
        <option value="Hex(6)HexNAc(2) (N)">Hex(6)HexNAc(2) (N)</option>
        <option value="Hex(6)HexNAc(2)Phos(1) (N)">Hex(6)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(6)HexNAc(3) (N)">Hex(6)HexNAc(3) (N)</option>
        <option value="Hex(6)HexNAc(3)Phos(1) (N)">Hex(6)HexNAc(3)Phos(1) (N)</option>
        <option value="Hex(6)HexNAc(4) (N)">Hex(6)HexNAc(4) (N)</option>
        <option value="Hex(6)HexNAc(4) (S)">Hex(6)HexNAc(4) (S)</option>
        <option value="Hex(6)HexNAc(4) (T)">Hex(6)HexNAc(4) (T)</option>
        <option value="Hex(6)HexNAc(4)Me(3) (N)">Hex(6)HexNAc(4)Me(3) (N)</option>
        <option value="Hex(6)HexNAc(4)Me(3)Pent(1) (N)">Hex(6)HexNAc(4)Me(3)Pent(1) (N)</option>
        <option value="Hex(6)HexNAc(5) (N)">Hex(6)HexNAc(5) (N)</option>
        <option value="Hex(6)HexNAc(5)NeuAc(3) (N)">Hex(6)HexNAc(5)NeuAc(3) (N)</option>
        <option value="Hex(6)Phos(1) (S)">Hex(6)Phos(1) (S)</option>
        <option value="Hex(6)Phos(1) (T)">Hex(6)Phos(1) (T)</option>
        <option value="Hex(6)Phos(3) (S)">Hex(6)Phos(3) (S)</option>
        <option value="Hex(6)Phos(3) (T)">Hex(6)Phos(3) (T)</option>
        <option value="Hex(7)HexNAc(1) (N)">Hex(7)HexNAc(1) (N)</option>
        <option value="Hex(7)HexNAc(2) (N)">Hex(7)HexNAc(2) (N)</option>
        <option value="Hex(7)HexNAc(2)Phos(1) (N)">Hex(7)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(7)HexNAc(2)Phos(2) (N)">Hex(7)HexNAc(2)Phos(2) (N)</option>
        <option value="Hex(7)HexNAc(3) (N)">Hex(7)HexNAc(3) (N)</option>
        <option value="Hex(7)HexNAc(3)Phos(1) (N)">Hex(7)HexNAc(3)Phos(1) (N)</option>
        <option value="Hex(7)HexNAc(4) (N)">Hex(7)HexNAc(4) (N)</option>
        <option value="Hex(7)HexNAc(6) (N)">Hex(7)HexNAc(6) (N)</option>
        <option value="Hex(7)HexNAc(6) (S)">Hex(7)HexNAc(6) (S)</option>
        <option value="Hex(7)HexNAc(6) (T)">Hex(7)HexNAc(6) (T)</option>
        <option value="Hex(7)Phos(3) (S)">Hex(7)Phos(3) (S)</option>
        <option value="Hex(7)Phos(3) (T)">Hex(7)Phos(3) (T)</option>
        <option value="Hex(8)HexNAc(1) (N)">Hex(8)HexNAc(1) (N)</option>
        <option value="Hex(8)HexNAc(2) (N)">Hex(8)HexNAc(2) (N)</option>
        <option value="Hex(8)Phos(3) (S)">Hex(8)Phos(3) (S)</option>
        <option value="Hex(8)Phos(3) (T)">Hex(8)Phos(3) (T)</option>
        <option value="Hex(9) (N)">Hex(9) (N)</option>
        <option value="Hex(9)HexNAc(1) (N)">Hex(9)HexNAc(1) (N)</option>
        <option value="Hex(9)HexNAc(2) (N)">Hex(9)HexNAc(2) (N)</option>
        <option value="Hex(9)Phos(3) (S)">Hex(9)Phos(3) (S)</option>
        <option value="Hex(9)Phos(3) (T)">Hex(9)Phos(3) (T)</option>
        <option value="HexA(2)HexNAc(3) (S)">HexA(2)HexNAc(3) (S)</option>
        <option value="HexA(2)HexNAc(3) (T)">HexA(2)HexNAc(3) (T)</option>
        <option value="HexN (K)">HexN (K)</option>
        <option value="HexN (N)">HexN (N)</option>
        <option value="HexN (S)">HexN (S)</option>
        <option value="HexN (T)">HexN (T)</option>
        <option value="HexN (W)">HexN (W)</option>
        <option value="HexNAc (C)">HexNAc (C)</option>
        <option value="HexNAc (N)">HexNAc (N)</option>
        <option value="HexNAc (S)">HexNAc (S)</option>
        <option value="HexNAc (T)">HexNAc (T)</option>
        <option value="HexNAc(1)dHex(1) (N)">HexNAc(1)dHex(1) (N)</option>
        <option value="HexNAc(1)dHex(1) (S)">HexNAc(1)dHex(1) (S)</option>
        <option value="HexNAc(1)dHex(1) (T)">HexNAc(1)dHex(1) (T)</option>
        <option value="HexNAc(1)dHex(2) (N)">HexNAc(1)dHex(2) (N)</option>
        <option value="HexNAc(1)Kdn(2) (S)">HexNAc(1)Kdn(2) (S)</option>
        <option value="HexNAc(1)Kdn(2) (T)">HexNAc(1)Kdn(2) (T)</option>
        <option value="HexNAc(1)NeuAc(1) (S)">HexNAc(1)NeuAc(1) (S)</option>
        <option value="HexNAc(1)NeuAc(1) (T)">HexNAc(1)NeuAc(1) (T)</option>
        <option value="HexNAc(1)NeuGc(1) (S)">HexNAc(1)NeuGc(1) (S)</option>
        <option value="HexNAc(1)NeuGc(1) (T)">HexNAc(1)NeuGc(1) (T)</option>
        <option value="HexNAc(1)NeuGc(2) (S)">HexNAc(1)NeuGc(2) (S)</option>
        <option value="HexNAc(1)NeuGc(2) (T)">HexNAc(1)NeuGc(2) (T)</option>
        <option value="HexNAc(2) (N)">HexNAc(2) (N)</option>
        <option value="HexNAc(2) (S)">HexNAc(2) (S)</option>
        <option value="HexNAc(2) (T)">HexNAc(2) (T)</option>
        <option value="HexNAc(2)dHex(1) (N)">HexNAc(2)dHex(1) (N)</option>
        <option value="HexNAc(2)dHex(2) (N)">HexNAc(2)dHex(2) (N)</option>
        <option value="HexNAc(2)NeuAc(1) (S)">HexNAc(2)NeuAc(1) (S)</option>
        <option value="HexNAc(2)NeuAc(1) (T)">HexNAc(2)NeuAc(1) (T)</option>
        <option value="HexNAc(2)NeuAc(1)Sulf(1) (S)">HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="HexNAc(2)NeuAc(1)Sulf(1) (T)">HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="HexNAc(2)NeuGc(1) (S)">HexNAc(2)NeuGc(1) (S)</option>
        <option value="HexNAc(2)NeuGc(1) (T)">HexNAc(2)NeuGc(1) (T)</option>
        <option value="HexNAc(2)Sulf(1) (S)">HexNAc(2)Sulf(1) (S)</option>
        <option value="HexNAc(2)Sulf(1) (T)">HexNAc(2)Sulf(1) (T)</option>
        <option value="HexNAc(3) (S)">HexNAc(3) (S)</option>
        <option value="HexNAc(3) (T)">HexNAc(3) (T)</option>
        <option value="HexNAc(3)Sulf(1) (S)">HexNAc(3)Sulf(1) (S)</option>
        <option value="HexNAc(3)Sulf(1) (T)">HexNAc(3)Sulf(1) (T)</option>
        <option value="HexNAc(4) (S)">HexNAc(4) (S)</option>
        <option value="HexNAc(4) (T)">HexNAc(4) (T)</option>
        <option value="HexNAc(5) (S)">HexNAc(5) (S)</option>
        <option value="HexNAc(5) (T)">HexNAc(5) (T)</option>
        <option value="His+O(2) (H)">His+O(2) (H)</option>
        <option value="His-&gt;Ala (H)">His-&gt;Ala (H)</option>
        <option value="His-&gt;Arg (H)">His-&gt;Arg (H)</option>
        <option value="His-&gt;Asn (H)">His-&gt;Asn (H)</option>
        <option value="His-&gt;Asp (H)">His-&gt;Asp (H)</option>
        <option value="His-&gt;Cys (H)">His-&gt;Cys (H)</option>
        <option value="His-&gt;Gln (H)">His-&gt;Gln (H)</option>
        <option value="His-&gt;Glu (H)">His-&gt;Glu (H)</option>
        <option value="His-&gt;Gly (H)">His-&gt;Gly (H)</option>
        <option value="His-&gt;Lys (H)">His-&gt;Lys (H)</option>
        <option value="His-&gt;Met (H)">His-&gt;Met (H)</option>
        <option value="His-&gt;Phe (H)">His-&gt;Phe (H)</option>
        <option value="His-&gt;Pro (H)">His-&gt;Pro (H)</option>
        <option value="His-&gt;Ser (H)">His-&gt;Ser (H)</option>
        <option value="His-&gt;Thr (H)">His-&gt;Thr (H)</option>
        <option value="His-&gt;Trp (H)">His-&gt;Trp (H)</option>
        <option value="His-&gt;Tyr (H)">His-&gt;Tyr (H)</option>
        <option value="His-&gt;Val (H)">His-&gt;Val (H)</option>
        <option value="His-&gt;Xle (H)">His-&gt;Xle (H)</option>
        <option value="HMVK (C)">HMVK (C)</option>
        <option value="HN2_mustard (C)">HN2_mustard (C)</option>
        <option value="HN2_mustard (H)">HN2_mustard (H)</option>
        <option value="HN2_mustard (K)">HN2_mustard (K)</option>
        <option value="HN3_mustard (C)">HN3_mustard (C)</option>
        <option value="HN3_mustard (H)">HN3_mustard (H)</option>
        <option value="HN3_mustard (K)">HN3_mustard (K)</option>
        <option value="HNE (A)">HNE (A)</option>
        <option value="HNE (C)">HNE (C)</option>
        <option value="HNE (H)">HNE (H)</option>
        <option value="HNE (K)">HNE (K)</option>
        <option value="HNE (L)">HNE (L)</option>
        <option value="HNE+Delta:H(2) (C)">HNE+Delta:H(2) (C)</option>
        <option value="HNE+Delta:H(2) (H)">HNE+Delta:H(2) (H)</option>
        <option value="HNE+Delta:H(2) (K)">HNE+Delta:H(2) (K)</option>
        <option value="HNE-BAHAH (C)">HNE-BAHAH (C)</option>
        <option value="HNE-BAHAH (H)">HNE-BAHAH (H)</option>
        <option value="HNE-BAHAH (K)">HNE-BAHAH (K)</option>
        <option value="HNE-Delta:H(2)O (C)">HNE-Delta:H(2)O (C)</option>
        <option value="HNE-Delta:H(2)O (H)">HNE-Delta:H(2)O (H)</option>
        <option value="HNE-Delta:H(2)O (K)">HNE-Delta:H(2)O (K)</option>
        <option value="Homocysteic_acid (M)">Homocysteic_acid (M)</option>
        <option value="HPG (R)">HPG (R)</option>
        <option value="Hydroxamic_acid (D)">Hydroxamic_acid (D)</option>
        <option value="Hydroxamic_acid (E)">Hydroxamic_acid (E)</option>
        <option value="Hydroxycinnamyl (C)">Hydroxycinnamyl (C)</option>
        <option value="Hydroxyfarnesyl (C)">Hydroxyfarnesyl (C)</option>
        <option value="Hydroxyheme (E)">Hydroxyheme (E)</option>
        <option value="hydroxyisobutyryl (K)">hydroxyisobutyryl (K)</option>
        <option value="Hydroxymethyl (N)">Hydroxymethyl (N)</option>
        <option value="HydroxymethylOP (K)">HydroxymethylOP (K)</option>
        <option value="Hydroxytrimethyl (K)">Hydroxytrimethyl (K)</option>
        <option value="Hypusine (K)">Hypusine (K)</option>
        <option value="IASD (C)">IASD (C)</option>
        <option value="IBTP (C)">IBTP (C)</option>
        <option value="ICAT-C (C)">ICAT-C (C)</option>
        <option value="ICAT-C:13C(9) (C)">ICAT-C:13C(9) (C)</option>
        <option value="ICAT-D (C)">ICAT-D (C)</option>
        <option value="ICAT-D:2H(8) (C)">ICAT-D:2H(8) (C)</option>
        <option value="ICAT-G (C)">ICAT-G (C)</option>
        <option value="ICAT-G:2H(8) (C)">ICAT-G:2H(8) (C)</option>
        <option value="ICAT-H (C)">ICAT-H (C)</option>
        <option value="ICAT-H:13C(6) (C)">ICAT-H:13C(6) (C)</option>
        <option value="ICDID (C)">ICDID (C)</option>
        <option value="ICDID:2H(6) (C)">ICDID:2H(6) (C)</option>
        <option value="ICPL (K)">ICPL (K)</option>
        <option value="ICPL (N-term)">ICPL (N-term)</option>
        <option value="ICPL (Protein N-term)">ICPL (Protein N-term)</option>
        <option value="ICPL:13C(6) (K)">ICPL:13C(6) (K)</option>
        <option value="ICPL:13C(6) (N-term)">ICPL:13C(6) (N-term)</option>
        <option value="ICPL:13C(6) (Protein N-term)">ICPL:13C(6) (Protein N-term)</option>
        <option value="ICPL:13C(6)2H(4) (K)">ICPL:13C(6)2H(4) (K)</option>
        <option value="ICPL:13C(6)2H(4) (N-term)">ICPL:13C(6)2H(4) (N-term)</option>
        <option value="ICPL:13C(6)2H(4) (Protein N-term)">ICPL:13C(6)2H(4) (Protein N-term)</option>
        <option value="ICPL:2H(4) (K)">ICPL:2H(4) (K)</option>
        <option value="ICPL:2H(4) (N-term)">ICPL:2H(4) (N-term)</option>
        <option value="ICPL:2H(4) (Protein N-term)">ICPL:2H(4) (Protein N-term)</option>
        <option value="IDEnT (C)">IDEnT (C)</option>
        <option value="IED-Biotin (C)">IED-Biotin (C)</option>
        <option value="IGBP (C)">IGBP (C)</option>
        <option value="IGBP:13C(2) (C)">IGBP:13C(2) (C)</option>
        <option value="IMEHex(2)NeuAc(1) (K)">IMEHex(2)NeuAc(1) (K)</option>
        <option value="IMID (K)">IMID (K)</option>
        <option value="IMID:2H(4) (K)">IMID:2H(4) (K)</option>
        <option value="Iminobiotin (K)">Iminobiotin (K)</option>
        <option value="Iminobiotin (N-term)">Iminobiotin (N-term)</option>
        <option value="Iodo (H)">Iodo (H)</option>
        <option value="Iodo (Y)">Iodo (Y)</option>
        <option value="Iodoacetanilide (C)">Iodoacetanilide (C)</option>
        <option value="Iodoacetanilide (K)">Iodoacetanilide (K)</option>
        <option value="Iodoacetanilide (N-term)">Iodoacetanilide (N-term)</option>
        <option value="Iodoacetanilide:13C(6) (C)">Iodoacetanilide:13C(6) (C)</option>
        <option value="Iodoacetanilide:13C(6) (K)">Iodoacetanilide:13C(6) (K)</option>
        <option value="Iodoacetanilide:13C(6) (N-term)">Iodoacetanilide:13C(6) (N-term)</option>
        <option value="iodoTMT (C)">iodoTMT (C)</option>
        <option value="iodoTMT (D)">iodoTMT (D)</option>
        <option value="iodoTMT (E)">iodoTMT (E)</option>
        <option value="iodoTMT (H)">iodoTMT (H)</option>
        <option value="iodoTMT (K)">iodoTMT (K)</option>
        <option value="iodoTMT6plex (C)">iodoTMT6plex (C)</option>
        <option value="iodoTMT6plex (D)">iodoTMT6plex (D)</option>
        <option value="iodoTMT6plex (E)">iodoTMT6plex (E)</option>
        <option value="iodoTMT6plex (H)">iodoTMT6plex (H)</option>
        <option value="iodoTMT6plex (K)">iodoTMT6plex (K)</option>
        <option value="IodoU-AMP (F)">IodoU-AMP (F)</option>
        <option value="IodoU-AMP (W)">IodoU-AMP (W)</option>
        <option value="IodoU-AMP (Y)">IodoU-AMP (Y)</option>
        <option value="ISD_z+2_ion (N-term)">ISD_z+2_ion (N-term)</option>
        <option value="Isopropylphospho (S)">Isopropylphospho (S)</option>
        <option value="Isopropylphospho (T)">Isopropylphospho (T)</option>
        <option value="Isopropylphospho (Y)">Isopropylphospho (Y)</option>
        <option value="iTRAQ4plex (C)">iTRAQ4plex (C)</option>
        <option value="iTRAQ4plex (H)">iTRAQ4plex (H)</option>
        <option value="iTRAQ4plex (K)">iTRAQ4plex (K)</option>
        <option value="iTRAQ4plex (N-term)">iTRAQ4plex (N-term)</option>
        <option value="iTRAQ4plex (Protein N-term)">iTRAQ4plex (Protein N-term)</option>
        <option value="iTRAQ4plex (S)">iTRAQ4plex (S)</option>
        <option value="iTRAQ4plex (T)">iTRAQ4plex (T)</option>
        <option value="iTRAQ4plex (Y)">iTRAQ4plex (Y)</option>
        <option value="iTRAQ4plex114 (C)">iTRAQ4plex114 (C)</option>
        <option value="iTRAQ4plex114 (K)">iTRAQ4plex114 (K)</option>
        <option value="iTRAQ4plex114 (N-term)">iTRAQ4plex114 (N-term)</option>
        <option value="iTRAQ4plex114 (Y)">iTRAQ4plex114 (Y)</option>
        <option value="iTRAQ4plex115 (C)">iTRAQ4plex115 (C)</option>
        <option value="iTRAQ4plex115 (K)">iTRAQ4plex115 (K)</option>
        <option value="iTRAQ4plex115 (N-term)">iTRAQ4plex115 (N-term)</option>
        <option value="iTRAQ4plex115 (Y)">iTRAQ4plex115 (Y)</option>
        <option value="iTRAQ8plex (C)">iTRAQ8plex (C)</option>
        <option value="iTRAQ8plex (H)">iTRAQ8plex (H)</option>
        <option value="iTRAQ8plex (K)">iTRAQ8plex (K)</option>
        <option value="iTRAQ8plex (N-term)">iTRAQ8plex (N-term)</option>
        <option value="iTRAQ8plex (Protein N-term)">iTRAQ8plex (Protein N-term)</option>
        <option value="iTRAQ8plex (S)">iTRAQ8plex (S)</option>
        <option value="iTRAQ8plex (T)">iTRAQ8plex (T)</option>
        <option value="iTRAQ8plex (Y)">iTRAQ8plex (Y)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (C)">iTRAQ8plex:13C(6)15N(2) (C)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (K)">iTRAQ8plex:13C(6)15N(2) (K)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (N-term)">iTRAQ8plex:13C(6)15N(2) (N-term)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (Y)">iTRAQ8plex:13C(6)15N(2) (Y)</option>
        <option value="Kdo (S)">Kdo (S)</option>
        <option value="Kdo (T)">Kdo (T)</option>
        <option value="Label:13C(1)2H(3) (M)">Label:13C(1)2H(3) (M)</option>
        <option value="Label:13C(1)2H(3)+Oxidation (M)">Label:13C(1)2H(3)+Oxidation (M)</option>
        <option value="Label:13C(2)15N(2) (K)">Label:13C(2)15N(2) (K)</option>
        <option value="Label:13C(3) (A)">Label:13C(3) (A)</option>
        <option value="Label:13C(3)15N(1) (A)">Label:13C(3)15N(1) (A)</option>
        <option value="Label:13C(3)15N(1) (S)">Label:13C(3)15N(1) (S)</option>
        <option value="Label:13C(4) (M)">Label:13C(4) (M)</option>
        <option value="Label:13C(4)+Oxidation (M)">Label:13C(4)+Oxidation (M)</option>
        <option value="Label:13C(4)15N(1) (D)">Label:13C(4)15N(1) (D)</option>
        <option value="Label:13C(4)15N(2)+GG (K)">Label:13C(4)15N(2)+GG (K)</option>
        <option value="Label:13C(5) (P)">Label:13C(5) (P)</option>
        <option value="Label:13C(5)15N(1) (E)">Label:13C(5)15N(1) (E)</option>
        <option value="Label:13C(5)15N(1) (M)">Label:13C(5)15N(1) (M)</option>
        <option value="Label:13C(5)15N(1) (P)">Label:13C(5)15N(1) (P)</option>
        <option value="Label:13C(5)15N(1) (V)">Label:13C(5)15N(1) (V)</option>
        <option value="Label:13C(6) (I)">Label:13C(6) (I)</option>
        <option value="Label:13C(6) (K)">Label:13C(6) (K)</option>
        <option value="Label:13C(6) (L)">Label:13C(6) (L)</option>
        <option value="Label:13C(6) (R)">Label:13C(6) (R)</option>
        <option value="Label:13C(6)+Acetyl (K)">Label:13C(6)+Acetyl (K)</option>
        <option value="Label:13C(6)+Dimethyl (K)">Label:13C(6)+Dimethyl (K)</option>
        <option value="Label:13C(6)+GG (K)">Label:13C(6)+GG (K)</option>
        <option value="Label:13C(6)15N(1) (I)">Label:13C(6)15N(1) (I)</option>
        <option value="Label:13C(6)15N(1) (L)">Label:13C(6)15N(1) (L)</option>
        <option value="Label:13C(6)15N(2) (K)">Label:13C(6)15N(2) (K)</option>
        <option value="Label:13C(6)15N(2)+Acetyl (K)">Label:13C(6)15N(2)+Acetyl (K)</option>
        <option value="Label:13C(6)15N(2)+Dimethyl (K)">Label:13C(6)15N(2)+Dimethyl (K)</option>
        <option value="Label:13C(6)15N(2)+GG (K)">Label:13C(6)15N(2)+GG (K)</option>
        <option value="Label:13C(6)15N(4) (R)">Label:13C(6)15N(4) (R)</option>
        <option value="Label:13C(6)15N(4)+Dimethyl (R)">Label:13C(6)15N(4)+Dimethyl (R)</option>
        <option value="Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2) (R)">Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2) (R)</option>
        <option value="Label:13C(6)15N(4)+Methyl (R)">Label:13C(6)15N(4)+Methyl (R)</option>
        <option value="Label:13C(6)15N(4)+Methyl:2H(3)13C(1) (R)">Label:13C(6)15N(4)+Methyl:2H(3)13C(1) (R)</option>
        <option value="Label:13C(9) (F)">Label:13C(9) (F)</option>
        <option value="Label:13C(9) (Y)">Label:13C(9) (Y)</option>
        <option value="Label:13C(9)+Phospho (Y)">Label:13C(9)+Phospho (Y)</option>
        <option value="Label:13C(9)15N(1) (F)">Label:13C(9)15N(1) (F)</option>
        <option value="Label:15N(1) (A)">Label:15N(1) (A)</option>
        <option value="Label:15N(1) (C)">Label:15N(1) (C)</option>
        <option value="Label:15N(1) (D)">Label:15N(1) (D)</option>
        <option value="Label:15N(1) (E)">Label:15N(1) (E)</option>
        <option value="Label:15N(1) (F)">Label:15N(1) (F)</option>
        <option value="Label:15N(1) (G)">Label:15N(1) (G)</option>
        <option value="Label:15N(1) (I)">Label:15N(1) (I)</option>
        <option value="Label:15N(1) (L)">Label:15N(1) (L)</option>
        <option value="Label:15N(1) (M)">Label:15N(1) (M)</option>
        <option value="Label:15N(1) (P)">Label:15N(1) (P)</option>
        <option value="Label:15N(1) (S)">Label:15N(1) (S)</option>
        <option value="Label:15N(1) (T)">Label:15N(1) (T)</option>
        <option value="Label:15N(1) (V)">Label:15N(1) (V)</option>
        <option value="Label:15N(1) (Y)">Label:15N(1) (Y)</option>
        <option value="Label:15N(2) (K)">Label:15N(2) (K)</option>
        <option value="Label:15N(2) (N)">Label:15N(2) (N)</option>
        <option value="Label:15N(2) (Q)">Label:15N(2) (Q)</option>
        <option value="Label:15N(2) (W)">Label:15N(2) (W)</option>
        <option value="Label:15N(2)2H(9) (K)">Label:15N(2)2H(9) (K)</option>
        <option value="Label:15N(3) (H)">Label:15N(3) (H)</option>
        <option value="Label:15N(4) (R)">Label:15N(4) (R)</option>
        <option value="Label:18O(1) (C-term)">Label:18O(1) (C-term)</option>
        <option value="Label:18O(1) (S)">Label:18O(1) (S)</option>
        <option value="Label:18O(1) (T)">Label:18O(1) (T)</option>
        <option value="Label:18O(1) (Y)">Label:18O(1) (Y)</option>
        <option value="Label:18O(2) (C-term)">Label:18O(2) (C-term)</option>
        <option value="Label:2H(10) (L)">Label:2H(10) (L)</option>
        <option value="Label:2H(3) (L)">Label:2H(3) (L)</option>
        <option value="Label:2H(3) (M)">Label:2H(3) (M)</option>
        <option value="Label:2H(3)+Oxidation (M)">Label:2H(3)+Oxidation (M)</option>
        <option value="Label:2H(4) (A)">Label:2H(4) (A)</option>
        <option value="Label:2H(4) (F)">Label:2H(4) (F)</option>
        <option value="Label:2H(4) (K)">Label:2H(4) (K)</option>
        <option value="Label:2H(4) (U)">Label:2H(4) (U)</option>
        <option value="Label:2H(4) (Y)">Label:2H(4) (Y)</option>
        <option value="Label:2H(4)+Acetyl (K)">Label:2H(4)+Acetyl (K)</option>
        <option value="Label:2H(4)+GG (K)">Label:2H(4)+GG (K)</option>
        <option value="Label:2H(4)13C(1) (R)">Label:2H(4)13C(1) (R)</option>
        <option value="Label:2H(6)15N(1) (P)">Label:2H(6)15N(1) (P)</option>
        <option value="Label:2H(7)15N(4) (R)">Label:2H(7)15N(4) (R)</option>
        <option value="Label:2H(9)13C(6)15N(2) (K)">Label:2H(9)13C(6)15N(2) (K)</option>
        <option value="lapachenole (C)">lapachenole (C)</option>
        <option value="Leu-&gt;MetOx (L)">Leu-&gt;MetOx (L)</option>
        <option value="LG-anhydrolactam (K)">LG-anhydrolactam (K)</option>
        <option value="LG-anhydrolactam (N-term)">LG-anhydrolactam (N-term)</option>
        <option value="LG-anhyropyrrole (K)">LG-anhyropyrrole (K)</option>
        <option value="LG-anhyropyrrole (N-term)">LG-anhyropyrrole (N-term)</option>
        <option value="LG-Hlactam-K (K)">LG-Hlactam-K (K)</option>
        <option value="LG-Hlactam-K (Protein N-term)">LG-Hlactam-K (Protein N-term)</option>
        <option value="LG-Hlactam-R (R)">LG-Hlactam-R (R)</option>
        <option value="LG-lactam-K (K)">LG-lactam-K (K)</option>
        <option value="LG-lactam-K (Protein N-term)">LG-lactam-K (Protein N-term)</option>
        <option value="LG-lactam-R (R)">LG-lactam-R (R)</option>
        <option value="LG-pyrrole (C)">LG-pyrrole (C)</option>
        <option value="LG-pyrrole (K)">LG-pyrrole (K)</option>
        <option value="LG-pyrrole (N-term)">LG-pyrrole (N-term)</option>
        <option value="Lipoyl (K)">Lipoyl (K)</option>
        <option value="LRGG (K)">LRGG (K)</option>
        <option value="LRGG+dimethyl (K)">LRGG+dimethyl (K)</option>
        <option value="LRGG+methyl (K)">LRGG+methyl (K)</option>
        <option value="LTX+Lophotoxin (Y)">LTX+Lophotoxin (Y)</option>
        <option value="Lys (N-term)">Lys (N-term)</option>
        <option value="Lys+O(2) (H)">Lys+O(2) (H)</option>
        <option value="Lys-&gt;Ala (K)">Lys-&gt;Ala (K)</option>
        <option value="Lys-&gt;Allysine (K)">Lys-&gt;Allysine (K)</option>
        <option value="Lys-&gt;AminoadipicAcid (K)">Lys-&gt;AminoadipicAcid (K)</option>
        <option value="Lys-&gt;Arg (K)">Lys-&gt;Arg (K)</option>
        <option value="Lys-&gt;Asn (K)">Lys-&gt;Asn (K)</option>
        <option value="Lys-&gt;Asp (K)">Lys-&gt;Asp (K)</option>
        <option value="Lys-&gt;CamCys (K)">Lys-&gt;CamCys (K)</option>
        <option value="Lys-&gt;Cys (K)">Lys-&gt;Cys (K)</option>
        <option value="Lys-&gt;Gln (K)">Lys-&gt;Gln (K)</option>
        <option value="Lys-&gt;Glu (K)">Lys-&gt;Glu (K)</option>
        <option value="Lys-&gt;Gly (K)">Lys-&gt;Gly (K)</option>
        <option value="Lys-&gt;His (K)">Lys-&gt;His (K)</option>
        <option value="Lys-&gt;Met (K)">Lys-&gt;Met (K)</option>
        <option value="Lys-&gt;MetOx (K)">Lys-&gt;MetOx (K)</option>
        <option value="Lys-&gt;Phe (K)">Lys-&gt;Phe (K)</option>
        <option value="Lys-&gt;Pro (K)">Lys-&gt;Pro (K)</option>
        <option value="Lys-&gt;Ser (K)">Lys-&gt;Ser (K)</option>
        <option value="Lys-&gt;Thr (K)">Lys-&gt;Thr (K)</option>
        <option value="Lys-&gt;Trp (K)">Lys-&gt;Trp (K)</option>
        <option value="Lys-&gt;Tyr (K)">Lys-&gt;Tyr (K)</option>
        <option value="Lys-&gt;Val (K)">Lys-&gt;Val (K)</option>
        <option value="Lys-&gt;Xle (K)">Lys-&gt;Xle (K)</option>
        <option value="Lys-loss (Protein C-term K)">Lys-loss (Protein C-term K)</option>
        <option value="Lysbiotinhydrazide (K)">Lysbiotinhydrazide (K)</option>
        <option value="maleimide (C)">maleimide (C)</option>
        <option value="maleimide (K)">maleimide (K)</option>
        <option value="Maleimide-PEO2-Biotin (C)">Maleimide-PEO2-Biotin (C)</option>
        <option value="maleimide3 (C)">maleimide3 (C)</option>
        <option value="maleimide3 (K)">maleimide3 (K)</option>
        <option value="maleimide5 (C)">maleimide5 (C)</option>
        <option value="maleimide5 (K)">maleimide5 (K)</option>
        <option value="Malonyl (C)">Malonyl (C)</option>
        <option value="Malonyl (K)">Malonyl (K)</option>
        <option value="Malonyl (S)">Malonyl (S)</option>
        <option value="MBS+peptide (C)">MBS+peptide (C)</option>
        <option value="MDCC (C)">MDCC (C)</option>
        <option value="MeMePhosphorothioate (S)">MeMePhosphorothioate (S)</option>
        <option value="Menadione (C)">Menadione (C)</option>
        <option value="Menadione (K)">Menadione (K)</option>
        <option value="Menadione-HQ (C)">Menadione-HQ (C)</option>
        <option value="Menadione-HQ (K)">Menadione-HQ (K)</option>
        <option value="MercaptoEthanol (S)">MercaptoEthanol (S)</option>
        <option value="MercaptoEthanol (T)">MercaptoEthanol (T)</option>
        <option value="MesitylOxide (H)">MesitylOxide (H)</option>
        <option value="MesitylOxide (K)">MesitylOxide (K)</option>
        <option value="MesitylOxide (Protein N-term)">MesitylOxide (Protein N-term)</option>
        <option value="Met+O(2) (H)">Met+O(2) (H)</option>
        <option value="Met-&gt;Aha (M)">Met-&gt;Aha (M)</option>
        <option value="Met-&gt;Ala (M)">Met-&gt;Ala (M)</option>
        <option value="Met-&gt;Arg (M)">Met-&gt;Arg (M)</option>
        <option value="Met-&gt;Asn (M)">Met-&gt;Asn (M)</option>
        <option value="Met-&gt;Asp (M)">Met-&gt;Asp (M)</option>
        <option value="Met-&gt;AspSA (M)">Met-&gt;AspSA (M)</option>
        <option value="Met-&gt;Cys (M)">Met-&gt;Cys (M)</option>
        <option value="Met-&gt;Gln (M)">Met-&gt;Gln (M)</option>
        <option value="Met-&gt;Glu (M)">Met-&gt;Glu (M)</option>
        <option value="Met-&gt;Gly (M)">Met-&gt;Gly (M)</option>
        <option value="Met-&gt;His (M)">Met-&gt;His (M)</option>
        <option value="Met-&gt;Hpg (M)">Met-&gt;Hpg (M)</option>
        <option value="Met-&gt;Hse (C-term M)">Met-&gt;Hse (C-term M)</option>
        <option value="Met-&gt;Hsl (C-term M)">Met-&gt;Hsl (C-term M)</option>
        <option value="Met-&gt;Lys (M)">Met-&gt;Lys (M)</option>
        <option value="Met-&gt;Phe (M)">Met-&gt;Phe (M)</option>
        <option value="Met-&gt;Pro (M)">Met-&gt;Pro (M)</option>
        <option value="Met-&gt;Ser (M)">Met-&gt;Ser (M)</option>
        <option value="Met-&gt;Thr (M)">Met-&gt;Thr (M)</option>
        <option value="Met-&gt;Trp (M)">Met-&gt;Trp (M)</option>
        <option value="Met-&gt;Tyr (M)">Met-&gt;Tyr (M)</option>
        <option value="Met-&gt;Val (M)">Met-&gt;Val (M)</option>
        <option value="Met-&gt;Xle (M)">Met-&gt;Xle (M)</option>
        <option value="Met-loss (Protein N-term M)">Met-loss (Protein N-term M)</option>
        <option value="Met-loss+Acetyl (Protein N-term M)">Met-loss+Acetyl (Protein N-term M)</option>
        <option value="Methamidophos-O (C)">Methamidophos-O (C)</option>
        <option value="Methamidophos-O (H)">Methamidophos-O (H)</option>
        <option value="Methamidophos-O (K)">Methamidophos-O (K)</option>
        <option value="Methamidophos-O (S)">Methamidophos-O (S)</option>
        <option value="Methamidophos-O (T)">Methamidophos-O (T)</option>
        <option value="Methamidophos-O (Y)">Methamidophos-O (Y)</option>
        <option value="Methamidophos-S (C)">Methamidophos-S (C)</option>
        <option value="Methamidophos-S (H)">Methamidophos-S (H)</option>
        <option value="Methamidophos-S (K)">Methamidophos-S (K)</option>
        <option value="Methamidophos-S (S)">Methamidophos-S (S)</option>
        <option value="Methamidophos-S (T)">Methamidophos-S (T)</option>
        <option value="Methamidophos-S (Y)">Methamidophos-S (Y)</option>
        <option value="Methyl (C)">Methyl (C)</option>
        <option value="Methyl (C-term)">Methyl (C-term)</option>
        <option value="Methyl (D)">Methyl (D)</option>
        <option value="Methyl (E)">Methyl (E)</option>
        <option value="Methyl (H)">Methyl (H)</option>
        <option value="Methyl (I)">Methyl (I)</option>
        <option value="Methyl (K)">Methyl (K)</option>
        <option value="Methyl (L)">Methyl (L)</option>
        <option value="Methyl (N)">Methyl (N)</option>
        <option value="Methyl (N-term)">Methyl (N-term)</option>
        <option value="Methyl (Protein N-term)">Methyl (Protein N-term)</option>
        <option value="Methyl (Q)">Methyl (Q)</option>
        <option value="Methyl (R)">Methyl (R)</option>
        <option value="Methyl (S)">Methyl (S)</option>
        <option value="Methyl (T)">Methyl (T)</option>
        <option value="Methyl+Acetyl:2H(3) (K)">Methyl+Acetyl:2H(3) (K)</option>
        <option value="Methyl+Deamidated (N)">Methyl+Deamidated (N)</option>
        <option value="Methyl+Deamidated (Q)">Methyl+Deamidated (Q)</option>
        <option value="Methyl-PEO12-Maleimide (C)">Methyl-PEO12-Maleimide (C)</option>
        <option value="Methyl:2H(2) (K)">Methyl:2H(2) (K)</option>
        <option value="Methyl:2H(2) (N-term)">Methyl:2H(2) (N-term)</option>
        <option value="Methyl:2H(2)13C (C)">Methyl:2H(2)13C (C)</option>
        <option value="Methyl:2H(2)13C (C-term)">Methyl:2H(2)13C (C-term)</option>
        <option value="Methyl:2H(2)13C (D)">Methyl:2H(2)13C (D)</option>
        <option value="Methyl:2H(2)13C (E)">Methyl:2H(2)13C (E)</option>
        <option value="Methyl:2H(2)13C (H)">Methyl:2H(2)13C (H)</option>
        <option value="Methyl:2H(2)13C (I)">Methyl:2H(2)13C (I)</option>
        <option value="Methyl:2H(2)13C (K)">Methyl:2H(2)13C (K)</option>
        <option value="Methyl:2H(2)13C (L)">Methyl:2H(2)13C (L)</option>
        <option value="Methyl:2H(2)13C (N)">Methyl:2H(2)13C (N)</option>
        <option value="Methyl:2H(2)13C (N-term)">Methyl:2H(2)13C (N-term)</option>
        <option value="Methyl:2H(2)13C (Protein N-term)">Methyl:2H(2)13C (Protein N-term)</option>
        <option value="Methyl:2H(2)13C (Q)">Methyl:2H(2)13C (Q)</option>
        <option value="Methyl:2H(2)13C (R)">Methyl:2H(2)13C (R)</option>
        <option value="Methyl:2H(2)13C (S)">Methyl:2H(2)13C (S)</option>
        <option value="Methyl:2H(2)13C (T)">Methyl:2H(2)13C (T)</option>
        <option value="Methyl:2H(3) (D)">Methyl:2H(3) (D)</option>
        <option value="Methyl:2H(3) (E)">Methyl:2H(3) (E)</option>
        <option value="Methyl:2H(3) (K)">Methyl:2H(3) (K)</option>
        <option value="Methyl:2H(3) (R)">Methyl:2H(3) (R)</option>
        <option value="Methyl:2H(3) (X)">Methyl:2H(3) (X)</option>
        <option value="Methyl:2H(3)+Acetyl:2H(3) (K)">Methyl:2H(3)+Acetyl:2H(3) (K)</option>
        <option value="Methyl:2H(3)13C(1) (K)">Methyl:2H(3)13C(1) (K)</option>
        <option value="Methyl:2H(3)13C(1) (N-term)">Methyl:2H(3)13C(1) (N-term)</option>
        <option value="Methyl:2H(3)13C(1) (R)">Methyl:2H(3)13C(1) (R)</option>
        <option value="Methylamine (S)">Methylamine (S)</option>
        <option value="Methylamine (T)">Methylamine (T)</option>
        <option value="Methylmalonylation (S)">Methylmalonylation (S)</option>
        <option value="methylol (K)">methylol (K)</option>
        <option value="methylol (W)">methylol (W)</option>
        <option value="methylol (Y)">methylol (Y)</option>
        <option value="Methylphosphonate (S)">Methylphosphonate (S)</option>
        <option value="Methylphosphonate (T)">Methylphosphonate (T)</option>
        <option value="Methylphosphonate (Y)">Methylphosphonate (Y)</option>
        <option value="Methylpyrroline (K)">Methylpyrroline (K)</option>
        <option value="methylsulfonylethyl (C)">methylsulfonylethyl (C)</option>
        <option value="methylsulfonylethyl (H)">methylsulfonylethyl (H)</option>
        <option value="methylsulfonylethyl (K)">methylsulfonylethyl (K)</option>
        <option value="Methylthio (C)">Methylthio (C)</option>
        <option value="Methylthio (D)">Methylthio (D)</option>
        <option value="Methylthio (K)">Methylthio (K)</option>
        <option value="Methylthio (N)">Methylthio (N)</option>
        <option value="Methylthio (N-term)">Methylthio (N-term)</option>
        <option value="MG-H1 (R)">MG-H1 (R)</option>
        <option value="Microcin (Protein C-term)">Microcin (Protein C-term)</option>
        <option value="MicrocinC7 (Protein C-term)">MicrocinC7 (Protein C-term)</option>
        <option value="MM-diphenylpentanone (C)">MM-diphenylpentanone (C)</option>
        <option value="Molybdopterin (C)">Molybdopterin (C)</option>
        <option value="MolybdopterinGD (C)">MolybdopterinGD (C)</option>
        <option value="MolybdopterinGD (D)">MolybdopterinGD (D)</option>
        <option value="MolybdopterinGD (U)">MolybdopterinGD (U)</option>
        <option value="MolybdopterinGD+Delta:S(-1)Se(1) (C)">MolybdopterinGD+Delta:S(-1)Se(1) (C)</option>
        <option value="monomethylphosphothione (C)">monomethylphosphothione (C)</option>
        <option value="monomethylphosphothione (H)">monomethylphosphothione (H)</option>
        <option value="monomethylphosphothione (K)">monomethylphosphothione (K)</option>
        <option value="monomethylphosphothione (S)">monomethylphosphothione (S)</option>
        <option value="monomethylphosphothione (T)">monomethylphosphothione (T)</option>
        <option value="monomethylphosphothione (Y)">monomethylphosphothione (Y)</option>
        <option value="mTRAQ (H)">mTRAQ (H)</option>
        <option value="mTRAQ (K)">mTRAQ (K)</option>
        <option value="mTRAQ (N-term)">mTRAQ (N-term)</option>
        <option value="mTRAQ (S)">mTRAQ (S)</option>
        <option value="mTRAQ (T)">mTRAQ (T)</option>
        <option value="mTRAQ (Y)">mTRAQ (Y)</option>
        <option value="mTRAQ:13C(3)15N(1) (H)">mTRAQ:13C(3)15N(1) (H)</option>
        <option value="mTRAQ:13C(3)15N(1) (K)">mTRAQ:13C(3)15N(1) (K)</option>
        <option value="mTRAQ:13C(3)15N(1) (N-term)">mTRAQ:13C(3)15N(1) (N-term)</option>
        <option value="mTRAQ:13C(3)15N(1) (S)">mTRAQ:13C(3)15N(1) (S)</option>
        <option value="mTRAQ:13C(3)15N(1) (T)">mTRAQ:13C(3)15N(1) (T)</option>
        <option value="mTRAQ:13C(3)15N(1) (Y)">mTRAQ:13C(3)15N(1) (Y)</option>
        <option value="mTRAQ:13C(6)15N(2) (H)">mTRAQ:13C(6)15N(2) (H)</option>
        <option value="mTRAQ:13C(6)15N(2) (K)">mTRAQ:13C(6)15N(2) (K)</option>
        <option value="mTRAQ:13C(6)15N(2) (N-term)">mTRAQ:13C(6)15N(2) (N-term)</option>
        <option value="mTRAQ:13C(6)15N(2) (S)">mTRAQ:13C(6)15N(2) (S)</option>
        <option value="mTRAQ:13C(6)15N(2) (T)">mTRAQ:13C(6)15N(2) (T)</option>
        <option value="mTRAQ:13C(6)15N(2) (Y)">mTRAQ:13C(6)15N(2) (Y)</option>
        <option value="MTSL (C)">MTSL (C)</option>
        <option value="MurNAc (A)">MurNAc (A)</option>
        <option value="Myristoleyl (Protein N-term G)">Myristoleyl (Protein N-term G)</option>
        <option value="Myristoyl (C)">Myristoyl (C)</option>
        <option value="Myristoyl (K)">Myristoyl (K)</option>
        <option value="Myristoyl (N-term G)">Myristoyl (N-term G)</option>
        <option value="Myristoyl+Delta:H(-4) (Protein N-term G)">Myristoyl+Delta:H(-4) (Protein N-term G)</option>
        <option value="N-dimethylphosphate (S)">N-dimethylphosphate (S)</option>
        <option value="NA-LNO2 (C)">NA-LNO2 (C)</option>
        <option value="NA-LNO2 (H)">NA-LNO2 (H)</option>
        <option value="NA-OA-NO2 (C)">NA-OA-NO2 (C)</option>
        <option value="NA-OA-NO2 (H)">NA-OA-NO2 (H)</option>
        <option value="NBS (W)">NBS (W)</option>
        <option value="NBS:13C(6) (W)">NBS:13C(6) (W)</option>
        <option value="NDA (K)">NDA (K)</option>
        <option value="NDA (N-term)">NDA (N-term)</option>
        <option value="NEIAA (C)">NEIAA (C)</option>
        <option value="NEIAA (Y)">NEIAA (Y)</option>
        <option value="NEIAA:2H(5) (C)">NEIAA:2H(5) (C)</option>
        <option value="NEIAA:2H(5) (Y)">NEIAA:2H(5) (Y)</option>
        <option value="NEM:2H(5) (C)">NEM:2H(5) (C)</option>
        <option value="NEM:2H(5)+H2O (C)">NEM:2H(5)+H2O (C)</option>
        <option value="NEMsulfur (C)">NEMsulfur (C)</option>
        <option value="NEMsulfurWater (C)">NEMsulfurWater (C)</option>
        <option value="Nethylmaleimide (C)">Nethylmaleimide (C)</option>
        <option value="Nethylmaleimide+water (C)">Nethylmaleimide+water (C)</option>
        <option value="Nethylmaleimide+water (K)">Nethylmaleimide+water (K)</option>
        <option value="NeuAc (N)">NeuAc (N)</option>
        <option value="NeuAc (S)">NeuAc (S)</option>
        <option value="NeuAc (T)">NeuAc (T)</option>
        <option value="NeuGc (N)">NeuGc (N)</option>
        <option value="NeuGc (S)">NeuGc (S)</option>
        <option value="NeuGc (T)">NeuGc (T)</option>
        <option value="NHS-fluorescein (K)">NHS-fluorescein (K)</option>
        <option value="NHS-LC-Biotin (K)">NHS-LC-Biotin (K)</option>
        <option value="NHS-LC-Biotin (N-term)">NHS-LC-Biotin (N-term)</option>
        <option value="NIC (K)">NIC (K)</option>
        <option value="NIC (N-term)">NIC (N-term)</option>
        <option value="NIPCAM (C)">NIPCAM (C)</option>
        <option value="Nitrene (Y)">Nitrene (Y)</option>
        <option value="Nitro (F)">Nitro (F)</option>
        <option value="Nitro (W)">Nitro (W)</option>
        <option value="Nitro (Y)">Nitro (Y)</option>
        <option value="Nitrosyl (C)">Nitrosyl (C)</option>
        <option value="Nitrosyl (Y)">Nitrosyl (Y)</option>
        <option value="Nmethylmaleimide (C)">Nmethylmaleimide (C)</option>
        <option value="Nmethylmaleimide (K)">Nmethylmaleimide (K)</option>
        <option value="Nmethylmaleimide+water (C)">Nmethylmaleimide+water (C)</option>
        <option value="NO_SMX_SEMD (C)">NO_SMX_SEMD (C)</option>
        <option value="NO_SMX_SIMD (C)">NO_SMX_SIMD (C)</option>
        <option value="NP40 (N-term)">NP40 (N-term)</option>
        <option value="NQIGG (K)">NQIGG (K)</option>
        <option value="O-Dimethylphosphate (S)">O-Dimethylphosphate (S)</option>
        <option value="O-Dimethylphosphate (T)">O-Dimethylphosphate (T)</option>
        <option value="O-Dimethylphosphate (Y)">O-Dimethylphosphate (Y)</option>
        <option value="O-Et-N-diMePhospho (S)">O-Et-N-diMePhospho (S)</option>
        <option value="O-Isopropylmethylphosphonate (S)">O-Isopropylmethylphosphonate (S)</option>
        <option value="O-Isopropylmethylphosphonate (T)">O-Isopropylmethylphosphonate (T)</option>
        <option value="O-Isopropylmethylphosphonate (Y)">O-Isopropylmethylphosphonate (Y)</option>
        <option value="O-Methylphosphate (S)">O-Methylphosphate (S)</option>
        <option value="O-Methylphosphate (T)">O-Methylphosphate (T)</option>
        <option value="O-Methylphosphate (Y)">O-Methylphosphate (Y)</option>
        <option value="O-pinacolylmethylphosphonate (H)">O-pinacolylmethylphosphonate (H)</option>
        <option value="O-pinacolylmethylphosphonate (K)">O-pinacolylmethylphosphonate (K)</option>
        <option value="O-pinacolylmethylphosphonate (S)">O-pinacolylmethylphosphonate (S)</option>
        <option value="O-pinacolylmethylphosphonate (T)">O-pinacolylmethylphosphonate (T)</option>
        <option value="O-pinacolylmethylphosphonate (Y)">O-pinacolylmethylphosphonate (Y)</option>
        <option value="Octanoyl (C)">Octanoyl (C)</option>
        <option value="Octanoyl (S)">Octanoyl (S)</option>
        <option value="Octanoyl (T)">Octanoyl (T)</option>
        <option value="OxArgBiotin (R)">OxArgBiotin (R)</option>
        <option value="OxArgBiotinRed (R)">OxArgBiotinRed (R)</option>
        <option value="Oxidation (C)">Oxidation (C)</option>
        <option value="Oxidation (C-term G)">Oxidation (C-term G)</option>
        <option value="Oxidation (D)">Oxidation (D)</option>
        <option value="Oxidation (E)">Oxidation (E)</option>
        <option value="Oxidation (F)">Oxidation (F)</option>
        <option value="Oxidation (H)">Oxidation (H)</option>
        <option value="Oxidation (I)">Oxidation (I)</option>
        <option value="Oxidation (K)">Oxidation (K)</option>
        <option value="Oxidation (L)">Oxidation (L)</option>
        <option value="Oxidation (M)">Oxidation (M)</option>
        <option value="Oxidation (N)">Oxidation (N)</option>
        <option value="Oxidation (P)">Oxidation (P)</option>
        <option value="Oxidation (Q)">Oxidation (Q)</option>
        <option value="Oxidation (R)">Oxidation (R)</option>
        <option value="Oxidation (S)">Oxidation (S)</option>
        <option value="Oxidation (T)">Oxidation (T)</option>
        <option value="Oxidation (U)">Oxidation (U)</option>
        <option value="Oxidation (V)">Oxidation (V)</option>
        <option value="Oxidation (W)">Oxidation (W)</option>
        <option value="Oxidation (Y)">Oxidation (Y)</option>
        <option value="Oxidation+NEM (C)">Oxidation+NEM (C)</option>
        <option value="OxLysBiotin (K)">OxLysBiotin (K)</option>
        <option value="OxLysBiotinRed (K)">OxLysBiotinRed (K)</option>
        <option value="OxProBiotin (P)">OxProBiotin (P)</option>
        <option value="OxProBiotinRed (P)">OxProBiotinRed (P)</option>
        <option value="Palmitoleyl (C)">Palmitoleyl (C)</option>
        <option value="Palmitoleyl (S)">Palmitoleyl (S)</option>
        <option value="Palmitoleyl (T)">Palmitoleyl (T)</option>
        <option value="Palmitoyl (C)">Palmitoyl (C)</option>
        <option value="Palmitoyl (K)">Palmitoyl (K)</option>
        <option value="Palmitoyl (Protein N-term)">Palmitoyl (Protein N-term)</option>
        <option value="Palmitoyl (S)">Palmitoyl (S)</option>
        <option value="Palmitoyl (T)">Palmitoyl (T)</option>
        <option value="PEITC (C)">PEITC (C)</option>
        <option value="PEITC (K)">PEITC (K)</option>
        <option value="PEITC (N-term)">PEITC (N-term)</option>
        <option value="Pent(1)HexNAc(1) (S)">Pent(1)HexNAc(1) (S)</option>
        <option value="Pent(1)HexNAc(1) (T)">Pent(1)HexNAc(1) (T)</option>
        <option value="Pent(2) (S)">Pent(2) (S)</option>
        <option value="Pent(2) (T)">Pent(2) (T)</option>
        <option value="Pentose (S)">Pentose (S)</option>
        <option value="Pentose (T)">Pentose (T)</option>
        <option value="Pentylamine (Q)">Pentylamine (Q)</option>
        <option value="PEO-Iodoacetyl-LC-Biotin (C)">PEO-Iodoacetyl-LC-Biotin (C)</option>
        <option value="PET (S)">PET (S)</option>
        <option value="PET (T)">PET (T)</option>
        <option value="Phe-&gt;Ala (F)">Phe-&gt;Ala (F)</option>
        <option value="Phe-&gt;Arg (F)">Phe-&gt;Arg (F)</option>
        <option value="Phe-&gt;Asn (F)">Phe-&gt;Asn (F)</option>
        <option value="Phe-&gt;Asp (F)">Phe-&gt;Asp (F)</option>
        <option value="Phe-&gt;CamCys (F)">Phe-&gt;CamCys (F)</option>
        <option value="Phe-&gt;Cys (F)">Phe-&gt;Cys (F)</option>
        <option value="Phe-&gt;Gln (F)">Phe-&gt;Gln (F)</option>
        <option value="Phe-&gt;Glu (F)">Phe-&gt;Glu (F)</option>
        <option value="Phe-&gt;Gly (F)">Phe-&gt;Gly (F)</option>
        <option value="Phe-&gt;His (F)">Phe-&gt;His (F)</option>
        <option value="Phe-&gt;Lys (F)">Phe-&gt;Lys (F)</option>
        <option value="Phe-&gt;Met (F)">Phe-&gt;Met (F)</option>
        <option value="Phe-&gt;Pro (F)">Phe-&gt;Pro (F)</option>
        <option value="Phe-&gt;Ser (F)">Phe-&gt;Ser (F)</option>
        <option value="Phe-&gt;Thr (F)">Phe-&gt;Thr (F)</option>
        <option value="Phe-&gt;Trp (F)">Phe-&gt;Trp (F)</option>
        <option value="Phe-&gt;Tyr (F)">Phe-&gt;Tyr (F)</option>
        <option value="Phe-&gt;Val (F)">Phe-&gt;Val (F)</option>
        <option value="Phe-&gt;Xle (F)">Phe-&gt;Xle (F)</option>
        <option value="phenyl-phosphate (K)">phenyl-phosphate (K)</option>
        <option value="phenyl-phosphate (S)">phenyl-phosphate (S)</option>
        <option value="phenyl-phosphate (T)">phenyl-phosphate (T)</option>
        <option value="phenyl-phosphate (Y)">phenyl-phosphate (Y)</option>
        <option value="Phenylisocyanate (N-term)">Phenylisocyanate (N-term)</option>
        <option value="Phenylisocyanate:2H(5) (N-term)">Phenylisocyanate:2H(5) (N-term)</option>
        <option value="phenylsulfonylethyl (C)">phenylsulfonylethyl (C)</option>
        <option value="Phospho (C)">Phospho (C)</option>
        <option value="Phospho (D)">Phospho (D)</option>
        <option value="Phospho (E)">Phospho (E)</option>
        <option value="Phospho (H)">Phospho (H)</option>
        <option value="Phospho (K)">Phospho (K)</option>
        <option value="Phospho (R)">Phospho (R)</option>
        <option value="Phospho (S)">Phospho (S)</option>
        <option value="Phospho (T)">Phospho (T)</option>
        <option value="Phospho (Y)">Phospho (Y)</option>
        <option value="Phosphoadenosine (H)">Phosphoadenosine (H)</option>
        <option value="Phosphoadenosine (K)">Phosphoadenosine (K)</option>
        <option value="Phosphoadenosine (S)">Phosphoadenosine (S)</option>
        <option value="Phosphoadenosine (T)">Phosphoadenosine (T)</option>
        <option value="Phosphoadenosine (Y)">Phosphoadenosine (Y)</option>
        <option value="PhosphoCytidine (S)">PhosphoCytidine (S)</option>
        <option value="PhosphoCytidine (T)">PhosphoCytidine (T)</option>
        <option value="PhosphoCytidine (Y)">PhosphoCytidine (Y)</option>
        <option value="Phosphogluconoylation (K)">Phosphogluconoylation (K)</option>
        <option value="Phosphogluconoylation (N-term)">Phosphogluconoylation (N-term)</option>
        <option value="Phosphoguanosine (H)">Phosphoguanosine (H)</option>
        <option value="Phosphoguanosine (K)">Phosphoguanosine (K)</option>
        <option value="PhosphoHex (S)">PhosphoHex (S)</option>
        <option value="PhosphoHex (T)">PhosphoHex (T)</option>
        <option value="PhosphoHex(2) (N)">PhosphoHex(2) (N)</option>
        <option value="PhosphoHex(2) (S)">PhosphoHex(2) (S)</option>
        <option value="PhosphoHex(2) (T)">PhosphoHex(2) (T)</option>
        <option value="PhosphoHexNAc (S)">PhosphoHexNAc (S)</option>
        <option value="PhosphoHexNAc (T)">PhosphoHexNAc (T)</option>
        <option value="Phosphopantetheine (S)">Phosphopantetheine (S)</option>
        <option value="Phosphopropargyl (S)">Phosphopropargyl (S)</option>
        <option value="Phosphopropargyl (T)">Phosphopropargyl (T)</option>
        <option value="Phosphopropargyl (Y)">Phosphopropargyl (Y)</option>
        <option value="phosphoRibosyl (D)">phosphoRibosyl (D)</option>
        <option value="phosphoRibosyl (E)">phosphoRibosyl (E)</option>
        <option value="phosphoRibosyl (R)">phosphoRibosyl (R)</option>
        <option value="PhosphoribosyldephosphoCoA (S)">PhosphoribosyldephosphoCoA (S)</option>
        <option value="PhosphoUridine (H)">PhosphoUridine (H)</option>
        <option value="PhosphoUridine (Y)">PhosphoUridine (Y)</option>
        <option value="Phycocyanobilin (C)">Phycocyanobilin (C)</option>
        <option value="Phycoerythrobilin (C)">Phycoerythrobilin (C)</option>
        <option value="Phytochromobilin (C)">Phytochromobilin (C)</option>
        <option value="Piperidine (K)">Piperidine (K)</option>
        <option value="Piperidine (N-term)">Piperidine (N-term)</option>
        <option value="Pro+O(2) (H)">Pro+O(2) (H)</option>
        <option value="Pro-&gt;Ala (P)">Pro-&gt;Ala (P)</option>
        <option value="Pro-&gt;Arg (P)">Pro-&gt;Arg (P)</option>
        <option value="Pro-&gt;Asn (P)">Pro-&gt;Asn (P)</option>
        <option value="Pro-&gt;Asp (P)">Pro-&gt;Asp (P)</option>
        <option value="Pro-&gt;Cys (P)">Pro-&gt;Cys (P)</option>
        <option value="Pro-&gt;Gln (P)">Pro-&gt;Gln (P)</option>
        <option value="Pro-&gt;Glu (P)">Pro-&gt;Glu (P)</option>
        <option value="Pro-&gt;Gly (P)">Pro-&gt;Gly (P)</option>
        <option value="Pro-&gt;HAVA (P)">Pro-&gt;HAVA (P)</option>
        <option value="Pro-&gt;His (P)">Pro-&gt;His (P)</option>
        <option value="Pro-&gt;Lys (P)">Pro-&gt;Lys (P)</option>
        <option value="Pro-&gt;Met (P)">Pro-&gt;Met (P)</option>
        <option value="Pro-&gt;Phe (P)">Pro-&gt;Phe (P)</option>
        <option value="Pro-&gt;pyro-Glu (P)">Pro-&gt;pyro-Glu (P)</option>
        <option value="Pro-&gt;Pyrrolidinone (P)">Pro-&gt;Pyrrolidinone (P)</option>
        <option value="Pro-&gt;Pyrrolidone (P)">Pro-&gt;Pyrrolidone (P)</option>
        <option value="Pro-&gt;Ser (P)">Pro-&gt;Ser (P)</option>
        <option value="Pro-&gt;Thr (P)">Pro-&gt;Thr (P)</option>
        <option value="Pro-&gt;Trp (P)">Pro-&gt;Trp (P)</option>
        <option value="Pro-&gt;Tyr (P)">Pro-&gt;Tyr (P)</option>
        <option value="Pro-&gt;Val (P)">Pro-&gt;Val (P)</option>
        <option value="Pro-&gt;Xle (P)">Pro-&gt;Xle (P)</option>
        <option value="probiotinhydrazide (P)">probiotinhydrazide (P)</option>
        <option value="Propargylamine (C-term)">Propargylamine (C-term)</option>
        <option value="Propargylamine (D)">Propargylamine (D)</option>
        <option value="Propargylamine (E)">Propargylamine (E)</option>
        <option value="Propionamide (C)">Propionamide (C)</option>
        <option value="Propionamide (K)">Propionamide (K)</option>
        <option value="Propionamide (N-term)">Propionamide (N-term)</option>
        <option value="Propionamide:2H(3) (C)">Propionamide:2H(3) (C)</option>
        <option value="Propionyl (K)">Propionyl (K)</option>
        <option value="Propionyl (N-term)">Propionyl (N-term)</option>
        <option value="Propionyl (Protein N-term)">Propionyl (Protein N-term)</option>
        <option value="Propionyl (S)">Propionyl (S)</option>
        <option value="Propionyl (T)">Propionyl (T)</option>
        <option value="Propionyl:13C(3) (K)">Propionyl:13C(3) (K)</option>
        <option value="Propionyl:13C(3) (N-term)">Propionyl:13C(3) (N-term)</option>
        <option value="Propiophenone (C)">Propiophenone (C)</option>
        <option value="Propiophenone (H)">Propiophenone (H)</option>
        <option value="Propiophenone (K)">Propiophenone (K)</option>
        <option value="Propiophenone (R)">Propiophenone (R)</option>
        <option value="Propiophenone (S)">Propiophenone (S)</option>
        <option value="Propiophenone (T)">Propiophenone (T)</option>
        <option value="Propiophenone (W)">Propiophenone (W)</option>
        <option value="Propyl (C-term)">Propyl (C-term)</option>
        <option value="Propyl (D)">Propyl (D)</option>
        <option value="Propyl (E)">Propyl (E)</option>
        <option value="Propyl (K)">Propyl (K)</option>
        <option value="Propyl (N-term)">Propyl (N-term)</option>
        <option value="Propyl (Protein C-term)">Propyl (Protein C-term)</option>
        <option value="Propyl:2H(6) (K)">Propyl:2H(6) (K)</option>
        <option value="Propyl:2H(6) (N-term)">Propyl:2H(6) (N-term)</option>
        <option value="PropylNAGthiazoline (C)">PropylNAGthiazoline (C)</option>
        <option value="PS_Hapten (C)">PS_Hapten (C)</option>
        <option value="PS_Hapten (H)">PS_Hapten (H)</option>
        <option value="PS_Hapten (K)">PS_Hapten (K)</option>
        <option value="pupylation (K)">pupylation (K)</option>
        <option value="Puromycin (C-term)">Puromycin (C-term)</option>
        <option value="PyMIC (N-term)">PyMIC (N-term)</option>
        <option value="PyridoxalPhosphate (K)">PyridoxalPhosphate (K)</option>
        <option value="PyridoxalPhosphateH2 (K)">PyridoxalPhosphateH2 (K)</option>
        <option value="Pyridylacetyl (K)">Pyridylacetyl (K)</option>
        <option value="Pyridylacetyl (N-term)">Pyridylacetyl (N-term)</option>
        <option value="Pyridylethyl (C)">Pyridylethyl (C)</option>
        <option value="Pyro-carbamidomethyl (N-term C)">Pyro-carbamidomethyl (N-term C)</option>
        <option value="pyrophospho (S)">pyrophospho (S)</option>
        <option value="pyrophospho (T)">pyrophospho (T)</option>
        <option value="PyruvicAcidIminyl (K)">PyruvicAcidIminyl (K)</option>
        <option value="PyruvicAcidIminyl (Protein N-term C)">PyruvicAcidIminyl (Protein N-term C)</option>
        <option value="PyruvicAcidIminyl (Protein N-term V)">PyruvicAcidIminyl (Protein N-term V)</option>
        <option value="QAT (C)">QAT (C)</option>
        <option value="QAT:2H(3) (C)">QAT:2H(3) (C)</option>
        <option value="QEQTGG (K)">QEQTGG (K)</option>
        <option value="QQQTGG (K)">QQQTGG (K)</option>
        <option value="QTGG (K)">QTGG (K)</option>
        <option value="Quinone (W)">Quinone (W)</option>
        <option value="Quinone (Y)">Quinone (Y)</option>
        <option value="RBS-ID_Uridine (A)">RBS-ID_Uridine (A)</option>
        <option value="RBS-ID_Uridine (C)">RBS-ID_Uridine (C)</option>
        <option value="RBS-ID_Uridine (D)">RBS-ID_Uridine (D)</option>
        <option value="RBS-ID_Uridine (E)">RBS-ID_Uridine (E)</option>
        <option value="RBS-ID_Uridine (F)">RBS-ID_Uridine (F)</option>
        <option value="RBS-ID_Uridine (G)">RBS-ID_Uridine (G)</option>
        <option value="RBS-ID_Uridine (H)">RBS-ID_Uridine (H)</option>
        <option value="RBS-ID_Uridine (I)">RBS-ID_Uridine (I)</option>
        <option value="RBS-ID_Uridine (K)">RBS-ID_Uridine (K)</option>
        <option value="RBS-ID_Uridine (L)">RBS-ID_Uridine (L)</option>
        <option value="RBS-ID_Uridine (M)">RBS-ID_Uridine (M)</option>
        <option value="RBS-ID_Uridine (N)">RBS-ID_Uridine (N)</option>
        <option value="RBS-ID_Uridine (P)">RBS-ID_Uridine (P)</option>
        <option value="RBS-ID_Uridine (Q)">RBS-ID_Uridine (Q)</option>
        <option value="RBS-ID_Uridine (R)">RBS-ID_Uridine (R)</option>
        <option value="RBS-ID_Uridine (S)">RBS-ID_Uridine (S)</option>
        <option value="RBS-ID_Uridine (T)">RBS-ID_Uridine (T)</option>
        <option value="RBS-ID_Uridine (V)">RBS-ID_Uridine (V)</option>
        <option value="RBS-ID_Uridine (W)">RBS-ID_Uridine (W)</option>
        <option value="RBS-ID_Uridine (Y)">RBS-ID_Uridine (Y)</option>
        <option value="Retinylidene (K)">Retinylidene (K)</option>
        <option value="RNPXL (N-term K)">RNPXL (N-term K)</option>
        <option value="RNPXL (N-term R)">RNPXL (N-term R)</option>
        <option value="RNPXlink1 (C)">RNPXlink1 (C)</option>
        <option value="s-GlcNAc (S)">s-GlcNAc (S)</option>
        <option value="s-GlcNAc (T)">s-GlcNAc (T)</option>
        <option value="Saligenin (H)">Saligenin (H)</option>
        <option value="Saligenin (K)">Saligenin (K)</option>
        <option value="Ser-&gt;Ala (S)">Ser-&gt;Ala (S)</option>
        <option value="Ser-&gt;Arg (S)">Ser-&gt;Arg (S)</option>
        <option value="Ser-&gt;Asn (S)">Ser-&gt;Asn (S)</option>
        <option value="Ser-&gt;Asp (S)">Ser-&gt;Asp (S)</option>
        <option value="Ser-&gt;Cys (S)">Ser-&gt;Cys (S)</option>
        <option value="Ser-&gt;Gln (S)">Ser-&gt;Gln (S)</option>
        <option value="Ser-&gt;Glu (S)">Ser-&gt;Glu (S)</option>
        <option value="Ser-&gt;Gly (S)">Ser-&gt;Gly (S)</option>
        <option value="Ser-&gt;His (S)">Ser-&gt;His (S)</option>
        <option value="Ser-&gt;LacticAcid (Protein N-term S)">Ser-&gt;LacticAcid (Protein N-term S)</option>
        <option value="Ser-&gt;Lys (S)">Ser-&gt;Lys (S)</option>
        <option value="Ser-&gt;Met (S)">Ser-&gt;Met (S)</option>
        <option value="Ser-&gt;Phe (S)">Ser-&gt;Phe (S)</option>
        <option value="Ser-&gt;Pro (S)">Ser-&gt;Pro (S)</option>
        <option value="Ser-&gt;Thr (S)">Ser-&gt;Thr (S)</option>
        <option value="Ser-&gt;Trp (S)">Ser-&gt;Trp (S)</option>
        <option value="Ser-&gt;Tyr (S)">Ser-&gt;Tyr (S)</option>
        <option value="Ser-&gt;Val (S)">Ser-&gt;Val (S)</option>
        <option value="Ser-&gt;Xle (S)">Ser-&gt;Xle (S)</option>
        <option value="serotonylation (Q)">serotonylation (Q)</option>
        <option value="shTMT (K)">shTMT (K)</option>
        <option value="shTMT (N-term)">shTMT (N-term)</option>
        <option value="shTMT (Protein N-term)">shTMT (Protein N-term)</option>
        <option value="shTMTpro (K)">shTMTpro (K)</option>
        <option value="shTMTpro (N-term)">shTMTpro (N-term)</option>
        <option value="shTMTpro (Protein N-term)">shTMTpro (Protein N-term)</option>
        <option value="SMA (K)">SMA (K)</option>
        <option value="SMA (N-term)">SMA (N-term)</option>
        <option value="spermidine (Q)">spermidine (Q)</option>
        <option value="spermine (Q)">spermine (Q)</option>
        <option value="SPITC (K)">SPITC (K)</option>
        <option value="SPITC (N-term)">SPITC (N-term)</option>
        <option value="SPITC:13C(6) (K)">SPITC:13C(6) (K)</option>
        <option value="SPITC:13C(6) (N-term)">SPITC:13C(6) (N-term)</option>
        <option value="Succinyl (K)">Succinyl (K)</option>
        <option value="Succinyl (N-term)">Succinyl (N-term)</option>
        <option value="Succinyl (Protein N-term)">Succinyl (Protein N-term)</option>
        <option value="Succinyl:13C(4) (K)">Succinyl:13C(4) (K)</option>
        <option value="Succinyl:13C(4) (N-term)">Succinyl:13C(4) (N-term)</option>
        <option value="Succinyl:2H(4) (K)">Succinyl:2H(4) (K)</option>
        <option value="Succinyl:2H(4) (N-term)">Succinyl:2H(4) (N-term)</option>
        <option value="SulfanilicAcid (C-term)">SulfanilicAcid (C-term)</option>
        <option value="SulfanilicAcid (D)">SulfanilicAcid (D)</option>
        <option value="SulfanilicAcid (E)">SulfanilicAcid (E)</option>
        <option value="SulfanilicAcid:13C(6) (C-term)">SulfanilicAcid:13C(6) (C-term)</option>
        <option value="SulfanilicAcid:13C(6) (D)">SulfanilicAcid:13C(6) (D)</option>
        <option value="SulfanilicAcid:13C(6) (E)">SulfanilicAcid:13C(6) (E)</option>
        <option value="Sulfide (C)">Sulfide (C)</option>
        <option value="Sulfide (D)">Sulfide (D)</option>
        <option value="Sulfide (W)">Sulfide (W)</option>
        <option value="Sulfo (C)">Sulfo (C)</option>
        <option value="Sulfo (S)">Sulfo (S)</option>
        <option value="Sulfo (T)">Sulfo (T)</option>
        <option value="Sulfo (Y)">Sulfo (Y)</option>
        <option value="sulfo+amino (Y)">sulfo+amino (Y)</option>
        <option value="Sulfo-NHS-LC-LC-Biotin (K)">Sulfo-NHS-LC-LC-Biotin (K)</option>
        <option value="Sulfo-NHS-LC-LC-Biotin (N-term)">Sulfo-NHS-LC-LC-Biotin (N-term)</option>
        <option value="SulfoGMBS (C)">SulfoGMBS (C)</option>
        <option value="SulfurDioxide (C)">SulfurDioxide (C)</option>
        <option value="SUMO2135 (K)">SUMO2135 (K)</option>
        <option value="SUMO3549 (K)">SUMO3549 (K)</option>
        <option value="TAMRA-FP (S)">TAMRA-FP (S)</option>
        <option value="TAMRA-FP (Y)">TAMRA-FP (Y)</option>
        <option value="Thiadiazole (C)">Thiadiazole (C)</option>
        <option value="Thiazolidine (C)">Thiazolidine (C)</option>
        <option value="Thiazolidine (F)">Thiazolidine (F)</option>
        <option value="Thiazolidine (H)">Thiazolidine (H)</option>
        <option value="Thiazolidine (K)">Thiazolidine (K)</option>
        <option value="Thiazolidine (Protein N-term)">Thiazolidine (Protein N-term)</option>
        <option value="Thiazolidine (R)">Thiazolidine (R)</option>
        <option value="Thiazolidine (W)">Thiazolidine (W)</option>
        <option value="Thiazolidine (Y)">Thiazolidine (Y)</option>
        <option value="thioacylPA (K)">thioacylPA (K)</option>
        <option value="Thiophos-S-S-biotin (S)">Thiophos-S-S-biotin (S)</option>
        <option value="Thiophos-S-S-biotin (T)">Thiophos-S-S-biotin (T)</option>
        <option value="Thiophos-S-S-biotin (Y)">Thiophos-S-S-biotin (Y)</option>
        <option value="Thiophospho (S)">Thiophospho (S)</option>
        <option value="Thiophospho (T)">Thiophospho (T)</option>
        <option value="Thiophospho (Y)">Thiophospho (Y)</option>
        <option value="Thr-&gt;Ala (T)">Thr-&gt;Ala (T)</option>
        <option value="Thr-&gt;Arg (T)">Thr-&gt;Arg (T)</option>
        <option value="Thr-&gt;Asn (T)">Thr-&gt;Asn (T)</option>
        <option value="Thr-&gt;Asp (T)">Thr-&gt;Asp (T)</option>
        <option value="Thr-&gt;Cys (T)">Thr-&gt;Cys (T)</option>
        <option value="Thr-&gt;Gln (T)">Thr-&gt;Gln (T)</option>
        <option value="Thr-&gt;Glu (T)">Thr-&gt;Glu (T)</option>
        <option value="Thr-&gt;Gly (T)">Thr-&gt;Gly (T)</option>
        <option value="Thr-&gt;His (T)">Thr-&gt;His (T)</option>
        <option value="Thr-&gt;Lys (T)">Thr-&gt;Lys (T)</option>
        <option value="Thr-&gt;Met (T)">Thr-&gt;Met (T)</option>
        <option value="Thr-&gt;Phe (T)">Thr-&gt;Phe (T)</option>
        <option value="Thr-&gt;Pro (T)">Thr-&gt;Pro (T)</option>
        <option value="Thr-&gt;Ser (T)">Thr-&gt;Ser (T)</option>
        <option value="Thr-&gt;Trp (T)">Thr-&gt;Trp (T)</option>
        <option value="Thr-&gt;Tyr (T)">Thr-&gt;Tyr (T)</option>
        <option value="Thr-&gt;Val (T)">Thr-&gt;Val (T)</option>
        <option value="Thr-&gt;Xle (T)">Thr-&gt;Xle (T)</option>
        <option value="Thrbiotinhydrazide (T)">Thrbiotinhydrazide (T)</option>
        <option value="Thyroxine (Y)">Thyroxine (Y)</option>
        <option value="TMAB (K)">TMAB (K)</option>
        <option value="TMAB (N-term)">TMAB (N-term)</option>
        <option value="TMAB:2H(9) (K)">TMAB:2H(9) (K)</option>
        <option value="TMAB:2H(9) (N-term)">TMAB:2H(9) (N-term)</option>
        <option value="TMPP-Ac (K)">TMPP-Ac (K)</option>
        <option value="TMPP-Ac (N-term)">TMPP-Ac (N-term)</option>
        <option value="TMPP-Ac (Y)">TMPP-Ac (Y)</option>
        <option value="TMPP-Ac:13C(9) (K)">TMPP-Ac:13C(9) (K)</option>
        <option value="TMPP-Ac:13C(9) (N-term)">TMPP-Ac:13C(9) (N-term)</option>
        <option value="TMPP-Ac:13C(9) (Y)">TMPP-Ac:13C(9) (Y)</option>
        <option value="TMT (H)">TMT (H)</option>
        <option value="TMT (K)">TMT (K)</option>
        <option value="TMT (N-term)">TMT (N-term)</option>
        <option value="TMT (Protein N-term)">TMT (Protein N-term)</option>
        <option value="TMT (S)">TMT (S)</option>
        <option value="TMT (T)">TMT (T)</option>
        <option value="TMT2plex (H)">TMT2plex (H)</option>
        <option value="TMT2plex (K)">TMT2plex (K)</option>
        <option value="TMT2plex (N-term)">TMT2plex (N-term)</option>
        <option value="TMT2plex (Protein N-term)">TMT2plex (Protein N-term)</option>
        <option value="TMT2plex (S)">TMT2plex (S)</option>
        <option value="TMT2plex (T)">TMT2plex (T)</option>
        <option value="TMT6plex (H)">TMT6plex (H)</option>
        <option value="TMT6plex (K)">TMT6plex (K)</option>
        <option value="TMT6plex (N-term)">TMT6plex (N-term)</option>
        <option value="TMT6plex (Protein N-term)">TMT6plex (Protein N-term)</option>
        <option value="TMT6plex (S)">TMT6plex (S)</option>
        <option value="TMT6plex (T)">TMT6plex (T)</option>
        <option value="TMTpro (H)">TMTpro (H)</option>
        <option value="TMTpro (K)">TMTpro (K)</option>
        <option value="TMTpro (N-term)">TMTpro (N-term)</option>
        <option value="TMTpro (Protein N-term)">TMTpro (Protein N-term)</option>
        <option value="TMTpro (S)">TMTpro (S)</option>
        <option value="TMTpro (T)">TMTpro (T)</option>
        <option value="TMTpro_zero (H)">TMTpro_zero (H)</option>
        <option value="TMTpro_zero (K)">TMTpro_zero (K)</option>
        <option value="TMTpro_zero (N-term)">TMTpro_zero (N-term)</option>
        <option value="TMTpro_zero (Protein N-term)">TMTpro_zero (Protein N-term)</option>
        <option value="TMTpro_zero (S)">TMTpro_zero (S)</option>
        <option value="TMTpro_zero (T)">TMTpro_zero (T)</option>
        <option value="TNBS (K)">TNBS (K)</option>
        <option value="TNBS (N-term)">TNBS (N-term)</option>
        <option value="trifluoro (L)">trifluoro (L)</option>
        <option value="Triiodo (Y)">Triiodo (Y)</option>
        <option value="Triiodothyronine (Y)">Triiodothyronine (Y)</option>
        <option value="Trimethyl (K)">Trimethyl (K)</option>
        <option value="Trimethyl (Protein N-term A)">Trimethyl (Protein N-term A)</option>
        <option value="Trimethyl (R)">Trimethyl (R)</option>
        <option value="Trimethyl:13C(3)2H(9) (K)">Trimethyl:13C(3)2H(9) (K)</option>
        <option value="Trimethyl:13C(3)2H(9) (R)">Trimethyl:13C(3)2H(9) (R)</option>
        <option value="Trimethyl:2H(9) (K)">Trimethyl:2H(9) (K)</option>
        <option value="Trimethyl:2H(9) (R)">Trimethyl:2H(9) (R)</option>
        <option value="Trioxidation (C)">Trioxidation (C)</option>
        <option value="Trioxidation (F)">Trioxidation (F)</option>
        <option value="Trioxidation (W)">Trioxidation (W)</option>
        <option value="Trioxidation (Y)">Trioxidation (Y)</option>
        <option value="Tripalmitate (Protein N-term C)">Tripalmitate (Protein N-term C)</option>
        <option value="Tris (N)">Tris (N)</option>
        <option value="Triton (C-term)">Triton (C-term)</option>
        <option value="Triton (N-term)">Triton (N-term)</option>
        <option value="Trp-&gt;Ala (W)">Trp-&gt;Ala (W)</option>
        <option value="Trp-&gt;Arg (W)">Trp-&gt;Arg (W)</option>
        <option value="Trp-&gt;Asn (W)">Trp-&gt;Asn (W)</option>
        <option value="Trp-&gt;Asp (W)">Trp-&gt;Asp (W)</option>
        <option value="Trp-&gt;Cys (W)">Trp-&gt;Cys (W)</option>
        <option value="Trp-&gt;Gln (W)">Trp-&gt;Gln (W)</option>
        <option value="Trp-&gt;Glu (W)">Trp-&gt;Glu (W)</option>
        <option value="Trp-&gt;Gly (W)">Trp-&gt;Gly (W)</option>
        <option value="Trp-&gt;His (W)">Trp-&gt;His (W)</option>
        <option value="Trp-&gt;Hydroxykynurenin (W)">Trp-&gt;Hydroxykynurenin (W)</option>
        <option value="Trp-&gt;Kynurenin (W)">Trp-&gt;Kynurenin (W)</option>
        <option value="Trp-&gt;Lys (W)">Trp-&gt;Lys (W)</option>
        <option value="Trp-&gt;Met (W)">Trp-&gt;Met (W)</option>
        <option value="Trp-&gt;Oxolactone (W)">Trp-&gt;Oxolactone (W)</option>
        <option value="Trp-&gt;Phe (W)">Trp-&gt;Phe (W)</option>
        <option value="Trp-&gt;Pro (W)">Trp-&gt;Pro (W)</option>
        <option value="Trp-&gt;Ser (W)">Trp-&gt;Ser (W)</option>
        <option value="Trp-&gt;Thr (W)">Trp-&gt;Thr (W)</option>
        <option value="Trp-&gt;Tyr (W)">Trp-&gt;Tyr (W)</option>
        <option value="Trp-&gt;Val (W)">Trp-&gt;Val (W)</option>
        <option value="Trp-&gt;Xle (W)">Trp-&gt;Xle (W)</option>
        <option value="Tween20 (N-term)">Tween20 (N-term)</option>
        <option value="Tween80 (C-term)">Tween80 (C-term)</option>
        <option value="Tyr-&gt;Ala (Y)">Tyr-&gt;Ala (Y)</option>
        <option value="Tyr-&gt;Arg (Y)">Tyr-&gt;Arg (Y)</option>
        <option value="Tyr-&gt;Asn (Y)">Tyr-&gt;Asn (Y)</option>
        <option value="Tyr-&gt;Asp (Y)">Tyr-&gt;Asp (Y)</option>
        <option value="Tyr-&gt;Cys (Y)">Tyr-&gt;Cys (Y)</option>
        <option value="Tyr-&gt;Dha (Y)">Tyr-&gt;Dha (Y)</option>
        <option value="Tyr-&gt;Gln (Y)">Tyr-&gt;Gln (Y)</option>
        <option value="Tyr-&gt;Glu (Y)">Tyr-&gt;Glu (Y)</option>
        <option value="Tyr-&gt;Gly (Y)">Tyr-&gt;Gly (Y)</option>
        <option value="Tyr-&gt;His (Y)">Tyr-&gt;His (Y)</option>
        <option value="Tyr-&gt;Lys (Y)">Tyr-&gt;Lys (Y)</option>
        <option value="Tyr-&gt;Met (Y)">Tyr-&gt;Met (Y)</option>
        <option value="Tyr-&gt;Phe (Y)">Tyr-&gt;Phe (Y)</option>
        <option value="Tyr-&gt;Pro (Y)">Tyr-&gt;Pro (Y)</option>
        <option value="Tyr-&gt;Ser (Y)">Tyr-&gt;Ser (Y)</option>
        <option value="Tyr-&gt;Thr (Y)">Tyr-&gt;Thr (Y)</option>
        <option value="Tyr-&gt;Trp (Y)">Tyr-&gt;Trp (Y)</option>
        <option value="Tyr-&gt;Val (Y)">Tyr-&gt;Val (Y)</option>
        <option value="Tyr-&gt;Xle (Y)">Tyr-&gt;Xle (Y)</option>
        <option value="Ub-Br2 (C)">Ub-Br2 (C)</option>
        <option value="Ub-fluorescein (C)">Ub-fluorescein (C)</option>
        <option value="Ub-VME (C)">Ub-VME (C)</option>
        <option value="UgiJoullie (D)">UgiJoullie (D)</option>
        <option value="UgiJoullie (E)">UgiJoullie (E)</option>
        <option value="UgiJoullieProGly (D)">UgiJoullieProGly (D)</option>
        <option value="UgiJoullieProGly (E)">UgiJoullieProGly (E)</option>
        <option value="UgiJoullieProGlyProGly (D)">UgiJoullieProGlyProGly (D)</option>
        <option value="UgiJoullieProGlyProGly (E)">UgiJoullieProGlyProGly (E)</option>
        <option value="Unknown:162 (C-term)">Unknown:162 (C-term)</option>
        <option value="Unknown:162 (D)">Unknown:162 (D)</option>
        <option value="Unknown:162 (E)">Unknown:162 (E)</option>
        <option value="Unknown:162 (N-term)">Unknown:162 (N-term)</option>
        <option value="Unknown:177 (C-term)">Unknown:177 (C-term)</option>
        <option value="Unknown:177 (D)">Unknown:177 (D)</option>
        <option value="Unknown:177 (E)">Unknown:177 (E)</option>
        <option value="Unknown:177 (N-term)">Unknown:177 (N-term)</option>
        <option value="Unknown:210 (C-term)">Unknown:210 (C-term)</option>
        <option value="Unknown:210 (D)">Unknown:210 (D)</option>
        <option value="Unknown:210 (E)">Unknown:210 (E)</option>
        <option value="Unknown:210 (N-term)">Unknown:210 (N-term)</option>
        <option value="Unknown:216 (C-term)">Unknown:216 (C-term)</option>
        <option value="Unknown:216 (D)">Unknown:216 (D)</option>
        <option value="Unknown:216 (E)">Unknown:216 (E)</option>
        <option value="Unknown:216 (N-term)">Unknown:216 (N-term)</option>
        <option value="Unknown:234 (C-term)">Unknown:234 (C-term)</option>
        <option value="Unknown:234 (D)">Unknown:234 (D)</option>
        <option value="Unknown:234 (E)">Unknown:234 (E)</option>
        <option value="Unknown:234 (N-term)">Unknown:234 (N-term)</option>
        <option value="Unknown:248 (C-term)">Unknown:248 (C-term)</option>
        <option value="Unknown:248 (D)">Unknown:248 (D)</option>
        <option value="Unknown:248 (E)">Unknown:248 (E)</option>
        <option value="Unknown:248 (N-term)">Unknown:248 (N-term)</option>
        <option value="Unknown:250 (C-term)">Unknown:250 (C-term)</option>
        <option value="Unknown:250 (D)">Unknown:250 (D)</option>
        <option value="Unknown:250 (E)">Unknown:250 (E)</option>
        <option value="Unknown:250 (N-term)">Unknown:250 (N-term)</option>
        <option value="Unknown:302 (C-term)">Unknown:302 (C-term)</option>
        <option value="Unknown:302 (D)">Unknown:302 (D)</option>
        <option value="Unknown:302 (E)">Unknown:302 (E)</option>
        <option value="Unknown:302 (N-term)">Unknown:302 (N-term)</option>
        <option value="Unknown:306 (C-term)">Unknown:306 (C-term)</option>
        <option value="Unknown:306 (D)">Unknown:306 (D)</option>
        <option value="Unknown:306 (E)">Unknown:306 (E)</option>
        <option value="Unknown:306 (N-term)">Unknown:306 (N-term)</option>
        <option value="Unknown:420 (C-term)">Unknown:420 (C-term)</option>
        <option value="Unknown:420 (N-term)">Unknown:420 (N-term)</option>
        <option value="Val-&gt;Ala (V)">Val-&gt;Ala (V)</option>
        <option value="Val-&gt;Arg (V)">Val-&gt;Arg (V)</option>
        <option value="Val-&gt;Asn (V)">Val-&gt;Asn (V)</option>
        <option value="Val-&gt;Asp (V)">Val-&gt;Asp (V)</option>
        <option value="Val-&gt;Cys (V)">Val-&gt;Cys (V)</option>
        <option value="Val-&gt;Gln (V)">Val-&gt;Gln (V)</option>
        <option value="Val-&gt;Glu (V)">Val-&gt;Glu (V)</option>
        <option value="Val-&gt;Gly (V)">Val-&gt;Gly (V)</option>
        <option value="Val-&gt;His (V)">Val-&gt;His (V)</option>
        <option value="Val-&gt;Lys (V)">Val-&gt;Lys (V)</option>
        <option value="Val-&gt;Met (V)">Val-&gt;Met (V)</option>
        <option value="Val-&gt;Phe (V)">Val-&gt;Phe (V)</option>
        <option value="Val-&gt;Pro (V)">Val-&gt;Pro (V)</option>
        <option value="Val-&gt;Ser (V)">Val-&gt;Ser (V)</option>
        <option value="Val-&gt;Thr (V)">Val-&gt;Thr (V)</option>
        <option value="Val-&gt;Trp (V)">Val-&gt;Trp (V)</option>
        <option value="Val-&gt;Tyr (V)">Val-&gt;Tyr (V)</option>
        <option value="Val-&gt;Xle (V)">Val-&gt;Xle (V)</option>
        <option value="VFQQQTGG (K)">VFQQQTGG (K)</option>
        <option value="VIEVYQEQTGG (K)">VIEVYQEQTGG (K)</option>
        <option value="Withaferin (C)">Withaferin (C)</option>
        <option value="Xle-&gt;Ala (I)">Xle-&gt;Ala (I)</option>
        <option value="Xle-&gt;Ala (L)">Xle-&gt;Ala (L)</option>
        <option value="Xle-&gt;Arg (I)">Xle-&gt;Arg (I)</option>
        <option value="Xle-&gt;Arg (L)">Xle-&gt;Arg (L)</option>
        <option value="Xle-&gt;Asn (I)">Xle-&gt;Asn (I)</option>
        <option value="Xle-&gt;Asn (L)">Xle-&gt;Asn (L)</option>
        <option value="Xle-&gt;Asp (I)">Xle-&gt;Asp (I)</option>
        <option value="Xle-&gt;Asp (L)">Xle-&gt;Asp (L)</option>
        <option value="Xle-&gt;Cys (I)">Xle-&gt;Cys (I)</option>
        <option value="Xle-&gt;Cys (L)">Xle-&gt;Cys (L)</option>
        <option value="Xle-&gt;Gln (I)">Xle-&gt;Gln (I)</option>
        <option value="Xle-&gt;Gln (L)">Xle-&gt;Gln (L)</option>
        <option value="Xle-&gt;Glu (I)">Xle-&gt;Glu (I)</option>
        <option value="Xle-&gt;Glu (L)">Xle-&gt;Glu (L)</option>
        <option value="Xle-&gt;Gly (I)">Xle-&gt;Gly (I)</option>
        <option value="Xle-&gt;Gly (L)">Xle-&gt;Gly (L)</option>
        <option value="Xle-&gt;His (I)">Xle-&gt;His (I)</option>
        <option value="Xle-&gt;His (L)">Xle-&gt;His (L)</option>
        <option value="Xle-&gt;Lys (I)">Xle-&gt;Lys (I)</option>
        <option value="Xle-&gt;Lys (L)">Xle-&gt;Lys (L)</option>
        <option value="Xle-&gt;Met (I)">Xle-&gt;Met (I)</option>
        <option value="Xle-&gt;Met (L)">Xle-&gt;Met (L)</option>
        <option value="Xle-&gt;Phe (I)">Xle-&gt;Phe (I)</option>
        <option value="Xle-&gt;Phe (L)">Xle-&gt;Phe (L)</option>
        <option value="Xle-&gt;Pro (I)">Xle-&gt;Pro (I)</option>
        <option value="Xle-&gt;Pro (L)">Xle-&gt;Pro (L)</option>
        <option value="Xle-&gt;Ser (I)">Xle-&gt;Ser (I)</option>
        <option value="Xle-&gt;Ser (L)">Xle-&gt;Ser (L)</option>
        <option value="Xle-&gt;Thr (I)">Xle-&gt;Thr (I)</option>
        <option value="Xle-&gt;Thr (L)">Xle-&gt;Thr (L)</option>
        <option value="Xle-&gt;Trp (I)">Xle-&gt;Trp (I)</option>
        <option value="Xle-&gt;Trp (L)">Xle-&gt;Trp (L)</option>
        <option value="Xle-&gt;Tyr (I)">Xle-&gt;Tyr (I)</option>
        <option value="Xle-&gt;Tyr (L)">Xle-&gt;Tyr (L)</option>
        <option value="Xle-&gt;Val (I)">Xle-&gt;Val (I)</option>
        <option value="Xle-&gt;Val (L)">Xle-&gt;Val (L)</option>
        <option value="Xlink:B10621 (C)">Xlink:B10621 (C)</option>
        <option value="Xlink:BMOE (C)">Xlink:BMOE (C)</option>
        <option value="Xlink:BS2G[113] (K)">Xlink:BS2G[113] (K)</option>
        <option value="Xlink:BS2G[113] (Protein N-term)">Xlink:BS2G[113] (Protein N-term)</option>
        <option value="Xlink:BS2G[114] (K)">Xlink:BS2G[114] (K)</option>
        <option value="Xlink:BS2G[114] (Protein N-term)">Xlink:BS2G[114] (Protein N-term)</option>
        <option value="Xlink:BS2G[217] (K)">Xlink:BS2G[217] (K)</option>
        <option value="Xlink:BS2G[217] (Protein N-term)">Xlink:BS2G[217] (Protein N-term)</option>
        <option value="Xlink:BS2G[96] (K)">Xlink:BS2G[96] (K)</option>
        <option value="Xlink:BS2G[96] (Protein N-term)">Xlink:BS2G[96] (Protein N-term)</option>
        <option value="Xlink:BuUrBu[111] (K)">Xlink:BuUrBu[111] (K)</option>
        <option value="Xlink:BuUrBu[111] (Protein N-term)">Xlink:BuUrBu[111] (Protein N-term)</option>
        <option value="Xlink:BuUrBu[196] (K)">Xlink:BuUrBu[196] (K)</option>
        <option value="Xlink:BuUrBu[196] (Protein N-term)">Xlink:BuUrBu[196] (Protein N-term)</option>
        <option value="Xlink:BuUrBu[213] (K)">Xlink:BuUrBu[213] (K)</option>
        <option value="Xlink:BuUrBu[213] (Protein N-term)">Xlink:BuUrBu[213] (Protein N-term)</option>
        <option value="Xlink:BuUrBu[214] (K)">Xlink:BuUrBu[214] (K)</option>
        <option value="Xlink:BuUrBu[214] (Protein N-term)">Xlink:BuUrBu[214] (Protein N-term)</option>
        <option value="Xlink:BuUrBu[317] (K)">Xlink:BuUrBu[317] (K)</option>
        <option value="Xlink:BuUrBu[317] (Protein N-term)">Xlink:BuUrBu[317] (Protein N-term)</option>
        <option value="Xlink:BuUrBu[85] (K)">Xlink:BuUrBu[85] (K)</option>
        <option value="Xlink:BuUrBu[85] (Protein N-term)">Xlink:BuUrBu[85] (Protein N-term)</option>
        <option value="Xlink:DFDNB (K)">Xlink:DFDNB (K)</option>
        <option value="Xlink:DFDNB (N)">Xlink:DFDNB (N)</option>
        <option value="Xlink:DFDNB (Q)">Xlink:DFDNB (Q)</option>
        <option value="Xlink:DFDNB (R)">Xlink:DFDNB (R)</option>
        <option value="Xlink:DMP[122] (K)">Xlink:DMP[122] (K)</option>
        <option value="Xlink:DMP[122] (Protein N-term)">Xlink:DMP[122] (Protein N-term)</option>
        <option value="Xlink:DMP[139] (K)">Xlink:DMP[139] (K)</option>
        <option value="Xlink:DMP[139] (Protein N-term)">Xlink:DMP[139] (Protein N-term)</option>
        <option value="Xlink:DMP[140] (K)">Xlink:DMP[140] (K)</option>
        <option value="Xlink:DMP[140] (Protein N-term)">Xlink:DMP[140] (Protein N-term)</option>
        <option value="Xlink:DMP[154] (K)">Xlink:DMP[154] (K)</option>
        <option value="Xlink:DMP[154] (Protein N-term)">Xlink:DMP[154] (Protein N-term)</option>
        <option value="Xlink:DSS[138] (K)">Xlink:DSS[138] (K)</option>
        <option value="Xlink:DSS[138] (Protein N-term)">Xlink:DSS[138] (Protein N-term)</option>
        <option value="Xlink:DSS[155] (K)">Xlink:DSS[155] (K)</option>
        <option value="Xlink:DSS[155] (Protein N-term)">Xlink:DSS[155] (Protein N-term)</option>
        <option value="Xlink:DSS[156] (K)">Xlink:DSS[156] (K)</option>
        <option value="Xlink:DSS[156] (Protein N-term)">Xlink:DSS[156] (Protein N-term)</option>
        <option value="Xlink:DSS[259] (K)">Xlink:DSS[259] (K)</option>
        <option value="Xlink:DSS[259] (Protein N-term)">Xlink:DSS[259] (Protein N-term)</option>
        <option value="Xlink:DSSO[104] (K)">Xlink:DSSO[104] (K)</option>
        <option value="Xlink:DSSO[104] (Protein N-term)">Xlink:DSSO[104] (Protein N-term)</option>
        <option value="Xlink:DSSO[158] (K)">Xlink:DSSO[158] (K)</option>
        <option value="Xlink:DSSO[158] (Protein N-term)">Xlink:DSSO[158] (Protein N-term)</option>
        <option value="Xlink:DSSO[175] (K)">Xlink:DSSO[175] (K)</option>
        <option value="Xlink:DSSO[175] (Protein N-term)">Xlink:DSSO[175] (Protein N-term)</option>
        <option value="Xlink:DSSO[176] (K)">Xlink:DSSO[176] (K)</option>
        <option value="Xlink:DSSO[176] (Protein N-term)">Xlink:DSSO[176] (Protein N-term)</option>
        <option value="Xlink:DSSO[279] (K)">Xlink:DSSO[279] (K)</option>
        <option value="Xlink:DSSO[279] (Protein N-term)">Xlink:DSSO[279] (Protein N-term)</option>
        <option value="Xlink:DSSO[54] (K)">Xlink:DSSO[54] (K)</option>
        <option value="Xlink:DSSO[54] (Protein N-term)">Xlink:DSSO[54] (Protein N-term)</option>
        <option value="Xlink:DSSO[86] (K)">Xlink:DSSO[86] (K)</option>
        <option value="Xlink:DSSO[86] (Protein N-term)">Xlink:DSSO[86] (Protein N-term)</option>
        <option value="Xlink:DST[114] (K)">Xlink:DST[114] (K)</option>
        <option value="Xlink:DST[114] (Protein N-term)">Xlink:DST[114] (Protein N-term)</option>
        <option value="Xlink:DST[132] (K)">Xlink:DST[132] (K)</option>
        <option value="Xlink:DST[132] (Protein N-term)">Xlink:DST[132] (Protein N-term)</option>
        <option value="Xlink:DST[56] (K)">Xlink:DST[56] (K)</option>
        <option value="Xlink:DST[56] (Protein N-term)">Xlink:DST[56] (Protein N-term)</option>
        <option value="Xlink:DTBP[172] (K)">Xlink:DTBP[172] (K)</option>
        <option value="Xlink:DTBP[172] (Protein N-term)">Xlink:DTBP[172] (Protein N-term)</option>
        <option value="Xlink:DTBP[87] (K)">Xlink:DTBP[87] (K)</option>
        <option value="Xlink:DTBP[87] (Protein N-term)">Xlink:DTBP[87] (Protein N-term)</option>
        <option value="Xlink:DTSSP[174] (K)">Xlink:DTSSP[174] (K)</option>
        <option value="Xlink:DTSSP[174] (Protein N-term)">Xlink:DTSSP[174] (Protein N-term)</option>
        <option value="Xlink:DTSSP[192] (K)">Xlink:DTSSP[192] (K)</option>
        <option value="Xlink:DTSSP[192] (Protein N-term)">Xlink:DTSSP[192] (Protein N-term)</option>
        <option value="Xlink:DTSSP[88] (K)">Xlink:DTSSP[88] (K)</option>
        <option value="Xlink:DTSSP[88] (Protein N-term)">Xlink:DTSSP[88] (Protein N-term)</option>
        <option value="Xlink:EGS[115] (K)">Xlink:EGS[115] (K)</option>
        <option value="Xlink:EGS[115] (Protein N-term)">Xlink:EGS[115] (Protein N-term)</option>
        <option value="Xlink:EGS[226] (K)">Xlink:EGS[226] (K)</option>
        <option value="Xlink:EGS[226] (Protein N-term)">Xlink:EGS[226] (Protein N-term)</option>
        <option value="Xlink:EGS[244] (K)">Xlink:EGS[244] (K)</option>
        <option value="Xlink:EGS[244] (Protein N-term)">Xlink:EGS[244] (Protein N-term)</option>
        <option value="Xlink:SMCC[219] (C)">Xlink:SMCC[219] (C)</option>
        <option value="Xlink:SMCC[219] (K)">Xlink:SMCC[219] (K)</option>
        <option value="Xlink:SMCC[219] (Protein N-term)">Xlink:SMCC[219] (Protein N-term)</option>
        <option value="Xlink:SMCC[237] (C)">Xlink:SMCC[237] (C)</option>
        <option value="Xlink:SMCC[237] (K)">Xlink:SMCC[237] (K)</option>
        <option value="Xlink:SMCC[237] (Protein N-term)">Xlink:SMCC[237] (Protein N-term)</option>
        <option value="Xlink:SMCC[321] (C)">Xlink:SMCC[321] (C)</option>
        <option value="ZGB (K)">ZGB (K)</option>
        <option value="ZGB (N-term)">ZGB (N-term)</option>
        <option value="ZQG (K)">ZQG (K)</option>
        <expand macro="list_string_san" name="fixed"/>
      </param>
      <param name="variable" argument="-modifications:variable" type="select" multiple="true" optional="true" label="Variable modifications, specified using UniMod (www.unimod.org) terms" help="e.g. 'Oxidation (M)'">
        <option value="15N-oxobutanoic (N-term C)">15N-oxobutanoic (N-term C)</option>
        <option value="15N-oxobutanoic (Protein N-term S)">15N-oxobutanoic (Protein N-term S)</option>
        <option value="15N-oxobutanoic (Protein N-term T)">15N-oxobutanoic (Protein N-term T)</option>
        <option value="2-dimethylsuccinyl (C)">2-dimethylsuccinyl (C)</option>
        <option value="2-monomethylsuccinyl (C)">2-monomethylsuccinyl (C)</option>
        <option value="2-nitrobenzyl (Y)">2-nitrobenzyl (Y)</option>
        <option value="2-succinyl (C)">2-succinyl (C)</option>
        <option value="2HPG (R)">2HPG (R)</option>
        <option value="3-deoxyglucosone (R)">3-deoxyglucosone (R)</option>
        <option value="3-hydroxybenzyl-phosphate (K)">3-hydroxybenzyl-phosphate (K)</option>
        <option value="3-hydroxybenzyl-phosphate (S)">3-hydroxybenzyl-phosphate (S)</option>
        <option value="3-hydroxybenzyl-phosphate (T)">3-hydroxybenzyl-phosphate (T)</option>
        <option value="3-hydroxybenzyl-phosphate (Y)">3-hydroxybenzyl-phosphate (Y)</option>
        <option value="3-phosphoglyceryl (K)">3-phosphoglyceryl (K)</option>
        <option value="3sulfo (N-term)">3sulfo (N-term)</option>
        <option value="4-ONE (C)">4-ONE (C)</option>
        <option value="4-ONE (H)">4-ONE (H)</option>
        <option value="4-ONE (K)">4-ONE (K)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (C)">4-ONE+Delta:H(-2)O(-1) (C)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (H)">4-ONE+Delta:H(-2)O(-1) (H)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (K)">4-ONE+Delta:H(-2)O(-1) (K)</option>
        <option value="4AcAllylGal (C)">4AcAllylGal (C)</option>
        <option value="a-type-ion (C-term)">a-type-ion (C-term)</option>
        <option value="AccQTag (K)">AccQTag (K)</option>
        <option value="AccQTag (N-term)">AccQTag (N-term)</option>
        <option value="Acetyl (C)">Acetyl (C)</option>
        <option value="Acetyl (H)">Acetyl (H)</option>
        <option value="Acetyl (K)">Acetyl (K)</option>
        <option value="Acetyl (N-term)">Acetyl (N-term)</option>
        <option value="Acetyl (Protein N-term)">Acetyl (Protein N-term)</option>
        <option value="Acetyl (R)">Acetyl (R)</option>
        <option value="Acetyl (S)">Acetyl (S)</option>
        <option value="Acetyl (T)">Acetyl (T)</option>
        <option value="Acetyl (Y)">Acetyl (Y)</option>
        <option value="Acetyl:13C(2) (K)">Acetyl:13C(2) (K)</option>
        <option value="Acetyl:13C(2) (Protein N-term)">Acetyl:13C(2) (Protein N-term)</option>
        <option value="Acetyl:2H(3) (H)">Acetyl:2H(3) (H)</option>
        <option value="Acetyl:2H(3) (K)">Acetyl:2H(3) (K)</option>
        <option value="Acetyl:2H(3) (N-term)">Acetyl:2H(3) (N-term)</option>
        <option value="Acetyl:2H(3) (Protein N-term)">Acetyl:2H(3) (Protein N-term)</option>
        <option value="Acetyl:2H(3) (S)">Acetyl:2H(3) (S)</option>
        <option value="Acetyl:2H(3) (T)">Acetyl:2H(3) (T)</option>
        <option value="Acetyl:2H(3) (Y)">Acetyl:2H(3) (Y)</option>
        <option value="Acetyldeoxyhypusine (K)">Acetyldeoxyhypusine (K)</option>
        <option value="Acetylhypusine (K)">Acetylhypusine (K)</option>
        <option value="ADP-Ribosyl (C)">ADP-Ribosyl (C)</option>
        <option value="ADP-Ribosyl (D)">ADP-Ribosyl (D)</option>
        <option value="ADP-Ribosyl (E)">ADP-Ribosyl (E)</option>
        <option value="ADP-Ribosyl (K)">ADP-Ribosyl (K)</option>
        <option value="ADP-Ribosyl (N)">ADP-Ribosyl (N)</option>
        <option value="ADP-Ribosyl (R)">ADP-Ribosyl (R)</option>
        <option value="ADP-Ribosyl (S)">ADP-Ribosyl (S)</option>
        <option value="ADP-Ribosyl (T)">ADP-Ribosyl (T)</option>
        <option value="AEBS (H)">AEBS (H)</option>
        <option value="AEBS (K)">AEBS (K)</option>
        <option value="AEBS (Protein N-term)">AEBS (Protein N-term)</option>
        <option value="AEBS (S)">AEBS (S)</option>
        <option value="AEBS (Y)">AEBS (Y)</option>
        <option value="AEC-MAEC (S)">AEC-MAEC (S)</option>
        <option value="AEC-MAEC (T)">AEC-MAEC (T)</option>
        <option value="AEC-MAEC:2H(4) (S)">AEC-MAEC:2H(4) (S)</option>
        <option value="AEC-MAEC:2H(4) (T)">AEC-MAEC:2H(4) (T)</option>
        <option value="AFB1_Dialdehyde (K)">AFB1_Dialdehyde (K)</option>
        <option value="AHA-Alkyne (M)">AHA-Alkyne (M)</option>
        <option value="AHA-Alkyne-KDDDD (M)">AHA-Alkyne-KDDDD (M)</option>
        <option value="AHA-SS (M)">AHA-SS (M)</option>
        <option value="AHA-SS_CAM (M)">AHA-SS_CAM (M)</option>
        <option value="Ahx2+Hsl (C-term)">Ahx2+Hsl (C-term)</option>
        <option value="Ala-&gt;Arg (A)">Ala-&gt;Arg (A)</option>
        <option value="Ala-&gt;Asn (A)">Ala-&gt;Asn (A)</option>
        <option value="Ala-&gt;Asp (A)">Ala-&gt;Asp (A)</option>
        <option value="Ala-&gt;Cys (A)">Ala-&gt;Cys (A)</option>
        <option value="Ala-&gt;Gln (A)">Ala-&gt;Gln (A)</option>
        <option value="Ala-&gt;Glu (A)">Ala-&gt;Glu (A)</option>
        <option value="Ala-&gt;Gly (A)">Ala-&gt;Gly (A)</option>
        <option value="Ala-&gt;His (A)">Ala-&gt;His (A)</option>
        <option value="Ala-&gt;Lys (A)">Ala-&gt;Lys (A)</option>
        <option value="Ala-&gt;Met (A)">Ala-&gt;Met (A)</option>
        <option value="Ala-&gt;Phe (A)">Ala-&gt;Phe (A)</option>
        <option value="Ala-&gt;Pro (A)">Ala-&gt;Pro (A)</option>
        <option value="Ala-&gt;Ser (A)">Ala-&gt;Ser (A)</option>
        <option value="Ala-&gt;Thr (A)">Ala-&gt;Thr (A)</option>
        <option value="Ala-&gt;Trp (A)">Ala-&gt;Trp (A)</option>
        <option value="Ala-&gt;Tyr (A)">Ala-&gt;Tyr (A)</option>
        <option value="Ala-&gt;Val (A)">Ala-&gt;Val (A)</option>
        <option value="Ala-&gt;Xle (A)">Ala-&gt;Xle (A)</option>
        <option value="Amidated (C-term)">Amidated (C-term)</option>
        <option value="Amidated (Protein C-term)">Amidated (Protein C-term)</option>
        <option value="Amidine (K)">Amidine (K)</option>
        <option value="Amidine (N-term)">Amidine (N-term)</option>
        <option value="Amidino (C)">Amidino (C)</option>
        <option value="Amino (Y)">Amino (Y)</option>
        <option value="Ammonia-loss (N)">Ammonia-loss (N)</option>
        <option value="Ammonia-loss (N-term C)">Ammonia-loss (N-term C)</option>
        <option value="Ammonia-loss (Protein N-term S)">Ammonia-loss (Protein N-term S)</option>
        <option value="Ammonia-loss (Protein N-term T)">Ammonia-loss (Protein N-term T)</option>
        <option value="Ammonium (C-term)">Ammonium (C-term)</option>
        <option value="Ammonium (D)">Ammonium (D)</option>
        <option value="Ammonium (E)">Ammonium (E)</option>
        <option value="AMTzHexNAc2 (N)">AMTzHexNAc2 (N)</option>
        <option value="AMTzHexNAc2 (S)">AMTzHexNAc2 (S)</option>
        <option value="AMTzHexNAc2 (T)">AMTzHexNAc2 (T)</option>
        <option value="Andro-H2O (C)">Andro-H2O (C)</option>
        <option value="Archaeol (C)">Archaeol (C)</option>
        <option value="Arg (N-term)">Arg (N-term)</option>
        <option value="Arg-&gt;Ala (R)">Arg-&gt;Ala (R)</option>
        <option value="Arg-&gt;Asn (R)">Arg-&gt;Asn (R)</option>
        <option value="Arg-&gt;Asp (R)">Arg-&gt;Asp (R)</option>
        <option value="Arg-&gt;Cys (R)">Arg-&gt;Cys (R)</option>
        <option value="Arg-&gt;Gln (R)">Arg-&gt;Gln (R)</option>
        <option value="Arg-&gt;Glu (R)">Arg-&gt;Glu (R)</option>
        <option value="Arg-&gt;GluSA (R)">Arg-&gt;GluSA (R)</option>
        <option value="Arg-&gt;Gly (R)">Arg-&gt;Gly (R)</option>
        <option value="Arg-&gt;His (R)">Arg-&gt;His (R)</option>
        <option value="Arg-&gt;Lys (R)">Arg-&gt;Lys (R)</option>
        <option value="Arg-&gt;Met (R)">Arg-&gt;Met (R)</option>
        <option value="Arg-&gt;Npo (R)">Arg-&gt;Npo (R)</option>
        <option value="Arg-&gt;Orn (R)">Arg-&gt;Orn (R)</option>
        <option value="Arg-&gt;Phe (R)">Arg-&gt;Phe (R)</option>
        <option value="Arg-&gt;Pro (R)">Arg-&gt;Pro (R)</option>
        <option value="Arg-&gt;Ser (R)">Arg-&gt;Ser (R)</option>
        <option value="Arg-&gt;Thr (R)">Arg-&gt;Thr (R)</option>
        <option value="Arg-&gt;Trp (R)">Arg-&gt;Trp (R)</option>
        <option value="Arg-&gt;Tyr (R)">Arg-&gt;Tyr (R)</option>
        <option value="Arg-&gt;Val (R)">Arg-&gt;Val (R)</option>
        <option value="Arg-&gt;Xle (R)">Arg-&gt;Xle (R)</option>
        <option value="Arg-loss (C-term R)">Arg-loss (C-term R)</option>
        <option value="Arg2PG (R)">Arg2PG (R)</option>
        <option value="Argbiotinhydrazide (R)">Argbiotinhydrazide (R)</option>
        <option value="AROD (C)">AROD (C)</option>
        <option value="Asn-&gt;Ala (N)">Asn-&gt;Ala (N)</option>
        <option value="Asn-&gt;Arg (N)">Asn-&gt;Arg (N)</option>
        <option value="Asn-&gt;Asp (N)">Asn-&gt;Asp (N)</option>
        <option value="Asn-&gt;Cys (N)">Asn-&gt;Cys (N)</option>
        <option value="Asn-&gt;Gln (N)">Asn-&gt;Gln (N)</option>
        <option value="Asn-&gt;Glu (N)">Asn-&gt;Glu (N)</option>
        <option value="Asn-&gt;Gly (N)">Asn-&gt;Gly (N)</option>
        <option value="Asn-&gt;His (N)">Asn-&gt;His (N)</option>
        <option value="Asn-&gt;Lys (N)">Asn-&gt;Lys (N)</option>
        <option value="Asn-&gt;Met (N)">Asn-&gt;Met (N)</option>
        <option value="Asn-&gt;Phe (N)">Asn-&gt;Phe (N)</option>
        <option value="Asn-&gt;Pro (N)">Asn-&gt;Pro (N)</option>
        <option value="Asn-&gt;Ser (N)">Asn-&gt;Ser (N)</option>
        <option value="Asn-&gt;Thr (N)">Asn-&gt;Thr (N)</option>
        <option value="Asn-&gt;Trp (N)">Asn-&gt;Trp (N)</option>
        <option value="Asn-&gt;Tyr (N)">Asn-&gt;Tyr (N)</option>
        <option value="Asn-&gt;Val (N)">Asn-&gt;Val (N)</option>
        <option value="Asn-&gt;Xle (N)">Asn-&gt;Xle (N)</option>
        <option value="Asp-&gt;Ala (D)">Asp-&gt;Ala (D)</option>
        <option value="Asp-&gt;Arg (D)">Asp-&gt;Arg (D)</option>
        <option value="Asp-&gt;Asn (D)">Asp-&gt;Asn (D)</option>
        <option value="Asp-&gt;Cys (D)">Asp-&gt;Cys (D)</option>
        <option value="Asp-&gt;Gln (D)">Asp-&gt;Gln (D)</option>
        <option value="Asp-&gt;Glu (D)">Asp-&gt;Glu (D)</option>
        <option value="Asp-&gt;Gly (D)">Asp-&gt;Gly (D)</option>
        <option value="Asp-&gt;His (D)">Asp-&gt;His (D)</option>
        <option value="Asp-&gt;Lys (D)">Asp-&gt;Lys (D)</option>
        <option value="Asp-&gt;Met (D)">Asp-&gt;Met (D)</option>
        <option value="Asp-&gt;Phe (D)">Asp-&gt;Phe (D)</option>
        <option value="Asp-&gt;Pro (D)">Asp-&gt;Pro (D)</option>
        <option value="Asp-&gt;Ser (D)">Asp-&gt;Ser (D)</option>
        <option value="Asp-&gt;Thr (D)">Asp-&gt;Thr (D)</option>
        <option value="Asp-&gt;Trp (D)">Asp-&gt;Trp (D)</option>
        <option value="Asp-&gt;Tyr (D)">Asp-&gt;Tyr (D)</option>
        <option value="Asp-&gt;Val (D)">Asp-&gt;Val (D)</option>
        <option value="Asp-&gt;Xle (D)">Asp-&gt;Xle (D)</option>
        <option value="Aspartylurea (H)">Aspartylurea (H)</option>
        <option value="Atto495Maleimide (C)">Atto495Maleimide (C)</option>
        <option value="AzidoF (F)">AzidoF (F)</option>
        <option value="azole (C)">azole (C)</option>
        <option value="azole (S)">azole (S)</option>
        <option value="Bacillosamine (N)">Bacillosamine (N)</option>
        <option value="BADGE (C)">BADGE (C)</option>
        <option value="BDMAPP (H)">BDMAPP (H)</option>
        <option value="BDMAPP (K)">BDMAPP (K)</option>
        <option value="BDMAPP (Protein N-term)">BDMAPP (Protein N-term)</option>
        <option value="BDMAPP (W)">BDMAPP (W)</option>
        <option value="BDMAPP (Y)">BDMAPP (Y)</option>
        <option value="BEMAD_C (C)">BEMAD_C (C)</option>
        <option value="BEMAD_C:2H(6) (C)">BEMAD_C:2H(6) (C)</option>
        <option value="BEMAD_ST (S)">BEMAD_ST (S)</option>
        <option value="BEMAD_ST (T)">BEMAD_ST (T)</option>
        <option value="BEMAD_ST:2H(6) (S)">BEMAD_ST:2H(6) (S)</option>
        <option value="BEMAD_ST:2H(6) (T)">BEMAD_ST:2H(6) (T)</option>
        <option value="Benzoyl (K)">Benzoyl (K)</option>
        <option value="Benzoyl (N-term)">Benzoyl (N-term)</option>
        <option value="benzylguanidine (K)">benzylguanidine (K)</option>
        <option value="betaFNA (C)">betaFNA (C)</option>
        <option value="betaFNA (K)">betaFNA (K)</option>
        <option value="BHT (C)">BHT (C)</option>
        <option value="BHT (H)">BHT (H)</option>
        <option value="BHT (K)">BHT (K)</option>
        <option value="BHTOH (C)">BHTOH (C)</option>
        <option value="BHTOH (H)">BHTOH (H)</option>
        <option value="BHTOH (K)">BHTOH (K)</option>
        <option value="Biotin (K)">Biotin (K)</option>
        <option value="Biotin (N-term)">Biotin (N-term)</option>
        <option value="Biotin-HPDP (C)">Biotin-HPDP (C)</option>
        <option value="Biotin-PEG-PRA (M)">Biotin-PEG-PRA (M)</option>
        <option value="Biotin-PEO-Amine (D)">Biotin-PEO-Amine (D)</option>
        <option value="Biotin-PEO-Amine (E)">Biotin-PEO-Amine (E)</option>
        <option value="Biotin-PEO-Amine (Protein C-term)">Biotin-PEO-Amine (Protein C-term)</option>
        <option value="Biotin-phenacyl (C)">Biotin-phenacyl (C)</option>
        <option value="Biotin-phenacyl (H)">Biotin-phenacyl (H)</option>
        <option value="Biotin-phenacyl (S)">Biotin-phenacyl (S)</option>
        <option value="Biotin-tyramide (Y)">Biotin-tyramide (Y)</option>
        <option value="Biotin:Aha-DADPS (M)">Biotin:Aha-DADPS (M)</option>
        <option value="Biotin:Cayman-10013 (C)">Biotin:Cayman-10013 (C)</option>
        <option value="Biotin:Cayman-10141 (C)">Biotin:Cayman-10141 (C)</option>
        <option value="Biotin:Invitrogen-M1602 (C)">Biotin:Invitrogen-M1602 (C)</option>
        <option value="Biotin:Sigma-B1267 (C)">Biotin:Sigma-B1267 (C)</option>
        <option value="Biotin:Thermo-21325 (K)">Biotin:Thermo-21325 (K)</option>
        <option value="Biotin:Thermo-21328 (K)">Biotin:Thermo-21328 (K)</option>
        <option value="Biotin:Thermo-21328 (N-term)">Biotin:Thermo-21328 (N-term)</option>
        <option value="Biotin:Thermo-21330 (K)">Biotin:Thermo-21330 (K)</option>
        <option value="Biotin:Thermo-21330 (N-term)">Biotin:Thermo-21330 (N-term)</option>
        <option value="Biotin:Thermo-21345 (Q)">Biotin:Thermo-21345 (Q)</option>
        <option value="Biotin:Thermo-21360 (X)">Biotin:Thermo-21360 (X)</option>
        <option value="Biotin:Thermo-21901+2H2O (C)">Biotin:Thermo-21901+2H2O (C)</option>
        <option value="Biotin:Thermo-21901+H2O (C)">Biotin:Thermo-21901+H2O (C)</option>
        <option value="Biotin:Thermo-21911 (C)">Biotin:Thermo-21911 (C)</option>
        <option value="Biotin:Thermo-33033 (X)">Biotin:Thermo-33033 (X)</option>
        <option value="Biotin:Thermo-33033-H (X)">Biotin:Thermo-33033-H (X)</option>
        <option value="Biotin:Thermo-88310 (K)">Biotin:Thermo-88310 (K)</option>
        <option value="Biotin:Thermo-88317 (S)">Biotin:Thermo-88317 (S)</option>
        <option value="Biotin:Thermo-88317 (Y)">Biotin:Thermo-88317 (Y)</option>
        <option value="biotinAcrolein298 (C)">biotinAcrolein298 (C)</option>
        <option value="biotinAcrolein298 (H)">biotinAcrolein298 (H)</option>
        <option value="biotinAcrolein298 (K)">biotinAcrolein298 (K)</option>
        <option value="biotinAcrolein298 (Protein N-term)">biotinAcrolein298 (Protein N-term)</option>
        <option value="BisANS (K)">BisANS (K)</option>
        <option value="bisANS-sulfonates (K)">bisANS-sulfonates (K)</option>
        <option value="bisANS-sulfonates (S)">bisANS-sulfonates (S)</option>
        <option value="bisANS-sulfonates (T)">bisANS-sulfonates (T)</option>
        <option value="BITC (C)">BITC (C)</option>
        <option value="BITC (K)">BITC (K)</option>
        <option value="BITC (N-term)">BITC (N-term)</option>
        <option value="BMP-piperidinol (C)">BMP-piperidinol (C)</option>
        <option value="BMP-piperidinol (M)">BMP-piperidinol (M)</option>
        <option value="Brij35 (N-term)">Brij35 (N-term)</option>
        <option value="Brij58 (N-term)">Brij58 (N-term)</option>
        <option value="Bromo (F)">Bromo (F)</option>
        <option value="Bromo (H)">Bromo (H)</option>
        <option value="Bromo (W)">Bromo (W)</option>
        <option value="Bromo (Y)">Bromo (Y)</option>
        <option value="Bromobimane (C)">Bromobimane (C)</option>
        <option value="Butyryl (K)">Butyryl (K)</option>
        <option value="C8-QAT (K)">C8-QAT (K)</option>
        <option value="C8-QAT (N-term)">C8-QAT (N-term)</option>
        <option value="CAF (N-term)">CAF (N-term)</option>
        <option value="CAMthiopropanoyl (K)">CAMthiopropanoyl (K)</option>
        <option value="CAMthiopropanoyl (Protein N-term)">CAMthiopropanoyl (Protein N-term)</option>
        <option value="Can-FP-biotin (S)">Can-FP-biotin (S)</option>
        <option value="Can-FP-biotin (T)">Can-FP-biotin (T)</option>
        <option value="Can-FP-biotin (Y)">Can-FP-biotin (Y)</option>
        <option value="Carbamidomethyl (C)">Carbamidomethyl (C)</option>
        <option value="Carbamidomethyl (D)">Carbamidomethyl (D)</option>
        <option value="Carbamidomethyl (E)">Carbamidomethyl (E)</option>
        <option value="Carbamidomethyl (H)">Carbamidomethyl (H)</option>
        <option value="Carbamidomethyl (K)">Carbamidomethyl (K)</option>
        <option value="Carbamidomethyl (M)">Carbamidomethyl (M)</option>
        <option value="Carbamidomethyl (N-term)">Carbamidomethyl (N-term)</option>
        <option value="Carbamidomethyl (S)">Carbamidomethyl (S)</option>
        <option value="Carbamidomethyl (T)">Carbamidomethyl (T)</option>
        <option value="Carbamidomethyl (U)">Carbamidomethyl (U)</option>
        <option value="Carbamidomethyl (Y)">Carbamidomethyl (Y)</option>
        <option value="CarbamidomethylDTT (C)">CarbamidomethylDTT (C)</option>
        <option value="Carbamyl (C)">Carbamyl (C)</option>
        <option value="Carbamyl (K)">Carbamyl (K)</option>
        <option value="Carbamyl (M)">Carbamyl (M)</option>
        <option value="Carbamyl (N-term)">Carbamyl (N-term)</option>
        <option value="Carbamyl (Protein N-term)">Carbamyl (Protein N-term)</option>
        <option value="Carbamyl (R)">Carbamyl (R)</option>
        <option value="Carbamyl (S)">Carbamyl (S)</option>
        <option value="Carbamyl (T)">Carbamyl (T)</option>
        <option value="Carbamyl (Y)">Carbamyl (Y)</option>
        <option value="Carbofuran (S)">Carbofuran (S)</option>
        <option value="Carbonyl (A)">Carbonyl (A)</option>
        <option value="Carbonyl (E)">Carbonyl (E)</option>
        <option value="Carbonyl (I)">Carbonyl (I)</option>
        <option value="Carbonyl (L)">Carbonyl (L)</option>
        <option value="Carbonyl (Q)">Carbonyl (Q)</option>
        <option value="Carbonyl (R)">Carbonyl (R)</option>
        <option value="Carbonyl (S)">Carbonyl (S)</option>
        <option value="Carbonyl (V)">Carbonyl (V)</option>
        <option value="Carboxy (D)">Carboxy (D)</option>
        <option value="Carboxy (E)">Carboxy (E)</option>
        <option value="Carboxy (K)">Carboxy (K)</option>
        <option value="Carboxy (Protein N-term M)">Carboxy (Protein N-term M)</option>
        <option value="Carboxy (W)">Carboxy (W)</option>
        <option value="Carboxy-&gt;Thiocarboxy (Protein C-term G)">Carboxy-&gt;Thiocarboxy (Protein C-term G)</option>
        <option value="Carboxyethyl (H)">Carboxyethyl (H)</option>
        <option value="Carboxyethyl (K)">Carboxyethyl (K)</option>
        <option value="Carboxyethylpyrrole (K)">Carboxyethylpyrrole (K)</option>
        <option value="Carboxymethyl (C)">Carboxymethyl (C)</option>
        <option value="Carboxymethyl (K)">Carboxymethyl (K)</option>
        <option value="Carboxymethyl (N-term)">Carboxymethyl (N-term)</option>
        <option value="Carboxymethyl (U)">Carboxymethyl (U)</option>
        <option value="Carboxymethyl (W)">Carboxymethyl (W)</option>
        <option value="Carboxymethyl:13C(2) (C)">Carboxymethyl:13C(2) (C)</option>
        <option value="CarboxymethylDMAP (N-term)">CarboxymethylDMAP (N-term)</option>
        <option value="CarboxymethylDTT (C)">CarboxymethylDTT (C)</option>
        <option value="Cation:Ag (C-term)">Cation:Ag (C-term)</option>
        <option value="Cation:Ag (D)">Cation:Ag (D)</option>
        <option value="Cation:Ag (E)">Cation:Ag (E)</option>
        <option value="Cation:Al[III] (C-term)">Cation:Al[III] (C-term)</option>
        <option value="Cation:Al[III] (D)">Cation:Al[III] (D)</option>
        <option value="Cation:Al[III] (E)">Cation:Al[III] (E)</option>
        <option value="Cation:Ca[II] (C-term)">Cation:Ca[II] (C-term)</option>
        <option value="Cation:Ca[II] (D)">Cation:Ca[II] (D)</option>
        <option value="Cation:Ca[II] (E)">Cation:Ca[II] (E)</option>
        <option value="Cation:Cu[I] (C-term)">Cation:Cu[I] (C-term)</option>
        <option value="Cation:Cu[I] (D)">Cation:Cu[I] (D)</option>
        <option value="Cation:Cu[I] (E)">Cation:Cu[I] (E)</option>
        <option value="Cation:Cu[I] (H)">Cation:Cu[I] (H)</option>
        <option value="Cation:Fe[II] (C-term)">Cation:Fe[II] (C-term)</option>
        <option value="Cation:Fe[II] (D)">Cation:Fe[II] (D)</option>
        <option value="Cation:Fe[II] (E)">Cation:Fe[II] (E)</option>
        <option value="Cation:Fe[III] (C-term)">Cation:Fe[III] (C-term)</option>
        <option value="Cation:Fe[III] (D)">Cation:Fe[III] (D)</option>
        <option value="Cation:Fe[III] (E)">Cation:Fe[III] (E)</option>
        <option value="Cation:K (C-term)">Cation:K (C-term)</option>
        <option value="Cation:K (D)">Cation:K (D)</option>
        <option value="Cation:K (E)">Cation:K (E)</option>
        <option value="Cation:Li (C-term)">Cation:Li (C-term)</option>
        <option value="Cation:Li (D)">Cation:Li (D)</option>
        <option value="Cation:Li (E)">Cation:Li (E)</option>
        <option value="Cation:Mg[II] (C-term)">Cation:Mg[II] (C-term)</option>
        <option value="Cation:Mg[II] (D)">Cation:Mg[II] (D)</option>
        <option value="Cation:Mg[II] (E)">Cation:Mg[II] (E)</option>
        <option value="Cation:Na (C-term)">Cation:Na (C-term)</option>
        <option value="Cation:Na (D)">Cation:Na (D)</option>
        <option value="Cation:Na (E)">Cation:Na (E)</option>
        <option value="Cation:Ni[II] (C-term)">Cation:Ni[II] (C-term)</option>
        <option value="Cation:Ni[II] (D)">Cation:Ni[II] (D)</option>
        <option value="Cation:Ni[II] (E)">Cation:Ni[II] (E)</option>
        <option value="Cation:Zn[II] (C-term)">Cation:Zn[II] (C-term)</option>
        <option value="Cation:Zn[II] (D)">Cation:Zn[II] (D)</option>
        <option value="Cation:Zn[II] (E)">Cation:Zn[II] (E)</option>
        <option value="Cation:Zn[II] (H)">Cation:Zn[II] (H)</option>
        <option value="cGMP (C)">cGMP (C)</option>
        <option value="cGMP (S)">cGMP (S)</option>
        <option value="cGMP+RMP-loss (C)">cGMP+RMP-loss (C)</option>
        <option value="cGMP+RMP-loss (S)">cGMP+RMP-loss (S)</option>
        <option value="CHDH (D)">CHDH (D)</option>
        <option value="Chlorination (W)">Chlorination (W)</option>
        <option value="Chlorination (Y)">Chlorination (Y)</option>
        <option value="Cholesterol (Protein C-term)">Cholesterol (Protein C-term)</option>
        <option value="CIGG (K)">CIGG (K)</option>
        <option value="CLIP_TRAQ_2 (K)">CLIP_TRAQ_2 (K)</option>
        <option value="CLIP_TRAQ_2 (N-term)">CLIP_TRAQ_2 (N-term)</option>
        <option value="CLIP_TRAQ_2 (Y)">CLIP_TRAQ_2 (Y)</option>
        <option value="CLIP_TRAQ_3 (K)">CLIP_TRAQ_3 (K)</option>
        <option value="CLIP_TRAQ_3 (N-term)">CLIP_TRAQ_3 (N-term)</option>
        <option value="CLIP_TRAQ_3 (Y)">CLIP_TRAQ_3 (Y)</option>
        <option value="CLIP_TRAQ_4 (K)">CLIP_TRAQ_4 (K)</option>
        <option value="CLIP_TRAQ_4 (N-term)">CLIP_TRAQ_4 (N-term)</option>
        <option value="CLIP_TRAQ_4 (Y)">CLIP_TRAQ_4 (Y)</option>
        <option value="CoenzymeA (C)">CoenzymeA (C)</option>
        <option value="Cresylphosphate (H)">Cresylphosphate (H)</option>
        <option value="Cresylphosphate (K)">Cresylphosphate (K)</option>
        <option value="Cresylphosphate (R)">Cresylphosphate (R)</option>
        <option value="Cresylphosphate (S)">Cresylphosphate (S)</option>
        <option value="Cresylphosphate (T)">Cresylphosphate (T)</option>
        <option value="Cresylphosphate (Y)">Cresylphosphate (Y)</option>
        <option value="CresylSaligeninPhosphate (H)">CresylSaligeninPhosphate (H)</option>
        <option value="CresylSaligeninPhosphate (K)">CresylSaligeninPhosphate (K)</option>
        <option value="CresylSaligeninPhosphate (R)">CresylSaligeninPhosphate (R)</option>
        <option value="CresylSaligeninPhosphate (S)">CresylSaligeninPhosphate (S)</option>
        <option value="CresylSaligeninPhosphate (T)">CresylSaligeninPhosphate (T)</option>
        <option value="CresylSaligeninPhosphate (Y)">CresylSaligeninPhosphate (Y)</option>
        <option value="Crotonaldehyde (C)">Crotonaldehyde (C)</option>
        <option value="Crotonaldehyde (H)">Crotonaldehyde (H)</option>
        <option value="Crotonaldehyde (K)">Crotonaldehyde (K)</option>
        <option value="Crotonyl (K)">Crotonyl (K)</option>
        <option value="CuSMo (C)">CuSMo (C)</option>
        <option value="CUSTOM0 (A)">CUSTOM0 (A)</option>
        <option value="CUSTOM0 (C)">CUSTOM0 (C)</option>
        <option value="CUSTOM0 (C-term)">CUSTOM0 (C-term)</option>
        <option value="CUSTOM0 (D)">CUSTOM0 (D)</option>
        <option value="CUSTOM0 (E)">CUSTOM0 (E)</option>
        <option value="CUSTOM0 (F)">CUSTOM0 (F)</option>
        <option value="CUSTOM0 (G)">CUSTOM0 (G)</option>
        <option value="CUSTOM0 (H)">CUSTOM0 (H)</option>
        <option value="CUSTOM0 (I)">CUSTOM0 (I)</option>
        <option value="CUSTOM0 (K)">CUSTOM0 (K)</option>
        <option value="CUSTOM0 (L)">CUSTOM0 (L)</option>
        <option value="CUSTOM0 (M)">CUSTOM0 (M)</option>
        <option value="CUSTOM0 (N)">CUSTOM0 (N)</option>
        <option value="CUSTOM0 (N-term)">CUSTOM0 (N-term)</option>
        <option value="CUSTOM0 (P)">CUSTOM0 (P)</option>
        <option value="CUSTOM0 (Q)">CUSTOM0 (Q)</option>
        <option value="CUSTOM0 (R)">CUSTOM0 (R)</option>
        <option value="CUSTOM0 (S)">CUSTOM0 (S)</option>
        <option value="CUSTOM0 (T)">CUSTOM0 (T)</option>
        <option value="CUSTOM0 (V)">CUSTOM0 (V)</option>
        <option value="CUSTOM0 (W)">CUSTOM0 (W)</option>
        <option value="CUSTOM0 (Y)">CUSTOM0 (Y)</option>
        <option value="CUSTOM1 (A)">CUSTOM1 (A)</option>
        <option value="CUSTOM1 (C)">CUSTOM1 (C)</option>
        <option value="CUSTOM1 (C-term)">CUSTOM1 (C-term)</option>
        <option value="CUSTOM1 (D)">CUSTOM1 (D)</option>
        <option value="CUSTOM1 (E)">CUSTOM1 (E)</option>
        <option value="CUSTOM1 (F)">CUSTOM1 (F)</option>
        <option value="CUSTOM1 (G)">CUSTOM1 (G)</option>
        <option value="CUSTOM1 (H)">CUSTOM1 (H)</option>
        <option value="CUSTOM1 (I)">CUSTOM1 (I)</option>
        <option value="CUSTOM1 (K)">CUSTOM1 (K)</option>
        <option value="CUSTOM1 (L)">CUSTOM1 (L)</option>
        <option value="CUSTOM1 (M)">CUSTOM1 (M)</option>
        <option value="CUSTOM1 (N)">CUSTOM1 (N)</option>
        <option value="CUSTOM1 (N-term)">CUSTOM1 (N-term)</option>
        <option value="CUSTOM1 (P)">CUSTOM1 (P)</option>
        <option value="CUSTOM1 (Q)">CUSTOM1 (Q)</option>
        <option value="CUSTOM1 (R)">CUSTOM1 (R)</option>
        <option value="CUSTOM1 (S)">CUSTOM1 (S)</option>
        <option value="CUSTOM1 (T)">CUSTOM1 (T)</option>
        <option value="CUSTOM1 (V)">CUSTOM1 (V)</option>
        <option value="CUSTOM1 (W)">CUSTOM1 (W)</option>
        <option value="CUSTOM1 (Y)">CUSTOM1 (Y)</option>
        <option value="CUSTOM2 (A)">CUSTOM2 (A)</option>
        <option value="CUSTOM2 (C)">CUSTOM2 (C)</option>
        <option value="CUSTOM2 (C-term)">CUSTOM2 (C-term)</option>
        <option value="CUSTOM2 (D)">CUSTOM2 (D)</option>
        <option value="CUSTOM2 (E)">CUSTOM2 (E)</option>
        <option value="CUSTOM2 (F)">CUSTOM2 (F)</option>
        <option value="CUSTOM2 (G)">CUSTOM2 (G)</option>
        <option value="CUSTOM2 (H)">CUSTOM2 (H)</option>
        <option value="CUSTOM2 (I)">CUSTOM2 (I)</option>
        <option value="CUSTOM2 (K)">CUSTOM2 (K)</option>
        <option value="CUSTOM2 (L)">CUSTOM2 (L)</option>
        <option value="CUSTOM2 (M)">CUSTOM2 (M)</option>
        <option value="CUSTOM2 (N)">CUSTOM2 (N)</option>
        <option value="CUSTOM2 (N-term)">CUSTOM2 (N-term)</option>
        <option value="CUSTOM2 (P)">CUSTOM2 (P)</option>
        <option value="CUSTOM2 (Q)">CUSTOM2 (Q)</option>
        <option value="CUSTOM2 (R)">CUSTOM2 (R)</option>
        <option value="CUSTOM2 (S)">CUSTOM2 (S)</option>
        <option value="CUSTOM2 (T)">CUSTOM2 (T)</option>
        <option value="CUSTOM2 (V)">CUSTOM2 (V)</option>
        <option value="CUSTOM2 (W)">CUSTOM2 (W)</option>
        <option value="CUSTOM2 (Y)">CUSTOM2 (Y)</option>
        <option value="CUSTOM3 (A)">CUSTOM3 (A)</option>
        <option value="CUSTOM3 (C)">CUSTOM3 (C)</option>
        <option value="CUSTOM3 (C-term)">CUSTOM3 (C-term)</option>
        <option value="CUSTOM3 (D)">CUSTOM3 (D)</option>
        <option value="CUSTOM3 (E)">CUSTOM3 (E)</option>
        <option value="CUSTOM3 (F)">CUSTOM3 (F)</option>
        <option value="CUSTOM3 (G)">CUSTOM3 (G)</option>
        <option value="CUSTOM3 (H)">CUSTOM3 (H)</option>
        <option value="CUSTOM3 (I)">CUSTOM3 (I)</option>
        <option value="CUSTOM3 (K)">CUSTOM3 (K)</option>
        <option value="CUSTOM3 (L)">CUSTOM3 (L)</option>
        <option value="CUSTOM3 (M)">CUSTOM3 (M)</option>
        <option value="CUSTOM3 (N)">CUSTOM3 (N)</option>
        <option value="CUSTOM3 (N-term)">CUSTOM3 (N-term)</option>
        <option value="CUSTOM3 (P)">CUSTOM3 (P)</option>
        <option value="CUSTOM3 (Q)">CUSTOM3 (Q)</option>
        <option value="CUSTOM3 (R)">CUSTOM3 (R)</option>
        <option value="CUSTOM3 (S)">CUSTOM3 (S)</option>
        <option value="CUSTOM3 (T)">CUSTOM3 (T)</option>
        <option value="CUSTOM3 (V)">CUSTOM3 (V)</option>
        <option value="CUSTOM3 (W)">CUSTOM3 (W)</option>
        <option value="CUSTOM3 (Y)">CUSTOM3 (Y)</option>
        <option value="CUSTOM4 (A)">CUSTOM4 (A)</option>
        <option value="CUSTOM4 (C)">CUSTOM4 (C)</option>
        <option value="CUSTOM4 (C-term)">CUSTOM4 (C-term)</option>
        <option value="CUSTOM4 (D)">CUSTOM4 (D)</option>
        <option value="CUSTOM4 (E)">CUSTOM4 (E)</option>
        <option value="CUSTOM4 (F)">CUSTOM4 (F)</option>
        <option value="CUSTOM4 (G)">CUSTOM4 (G)</option>
        <option value="CUSTOM4 (H)">CUSTOM4 (H)</option>
        <option value="CUSTOM4 (I)">CUSTOM4 (I)</option>
        <option value="CUSTOM4 (K)">CUSTOM4 (K)</option>
        <option value="CUSTOM4 (L)">CUSTOM4 (L)</option>
        <option value="CUSTOM4 (M)">CUSTOM4 (M)</option>
        <option value="CUSTOM4 (N)">CUSTOM4 (N)</option>
        <option value="CUSTOM4 (N-term)">CUSTOM4 (N-term)</option>
        <option value="CUSTOM4 (P)">CUSTOM4 (P)</option>
        <option value="CUSTOM4 (Q)">CUSTOM4 (Q)</option>
        <option value="CUSTOM4 (R)">CUSTOM4 (R)</option>
        <option value="CUSTOM4 (S)">CUSTOM4 (S)</option>
        <option value="CUSTOM4 (T)">CUSTOM4 (T)</option>
        <option value="CUSTOM4 (V)">CUSTOM4 (V)</option>
        <option value="CUSTOM4 (W)">CUSTOM4 (W)</option>
        <option value="CUSTOM4 (Y)">CUSTOM4 (Y)</option>
        <option value="CUSTOM5 (A)">CUSTOM5 (A)</option>
        <option value="CUSTOM5 (C)">CUSTOM5 (C)</option>
        <option value="CUSTOM5 (C-term)">CUSTOM5 (C-term)</option>
        <option value="CUSTOM5 (D)">CUSTOM5 (D)</option>
        <option value="CUSTOM5 (E)">CUSTOM5 (E)</option>
        <option value="CUSTOM5 (F)">CUSTOM5 (F)</option>
        <option value="CUSTOM5 (G)">CUSTOM5 (G)</option>
        <option value="CUSTOM5 (H)">CUSTOM5 (H)</option>
        <option value="CUSTOM5 (I)">CUSTOM5 (I)</option>
        <option value="CUSTOM5 (K)">CUSTOM5 (K)</option>
        <option value="CUSTOM5 (L)">CUSTOM5 (L)</option>
        <option value="CUSTOM5 (M)">CUSTOM5 (M)</option>
        <option value="CUSTOM5 (N)">CUSTOM5 (N)</option>
        <option value="CUSTOM5 (N-term)">CUSTOM5 (N-term)</option>
        <option value="CUSTOM5 (P)">CUSTOM5 (P)</option>
        <option value="CUSTOM5 (Q)">CUSTOM5 (Q)</option>
        <option value="CUSTOM5 (R)">CUSTOM5 (R)</option>
        <option value="CUSTOM5 (S)">CUSTOM5 (S)</option>
        <option value="CUSTOM5 (T)">CUSTOM5 (T)</option>
        <option value="CUSTOM5 (V)">CUSTOM5 (V)</option>
        <option value="CUSTOM5 (W)">CUSTOM5 (W)</option>
        <option value="CUSTOM5 (Y)">CUSTOM5 (Y)</option>
        <option value="CUSTOM6 (A)">CUSTOM6 (A)</option>
        <option value="CUSTOM6 (C)">CUSTOM6 (C)</option>
        <option value="CUSTOM6 (C-term)">CUSTOM6 (C-term)</option>
        <option value="CUSTOM6 (D)">CUSTOM6 (D)</option>
        <option value="CUSTOM6 (E)">CUSTOM6 (E)</option>
        <option value="CUSTOM6 (F)">CUSTOM6 (F)</option>
        <option value="CUSTOM6 (G)">CUSTOM6 (G)</option>
        <option value="CUSTOM6 (H)">CUSTOM6 (H)</option>
        <option value="CUSTOM6 (I)">CUSTOM6 (I)</option>
        <option value="CUSTOM6 (K)">CUSTOM6 (K)</option>
        <option value="CUSTOM6 (L)">CUSTOM6 (L)</option>
        <option value="CUSTOM6 (M)">CUSTOM6 (M)</option>
        <option value="CUSTOM6 (N)">CUSTOM6 (N)</option>
        <option value="CUSTOM6 (N-term)">CUSTOM6 (N-term)</option>
        <option value="CUSTOM6 (P)">CUSTOM6 (P)</option>
        <option value="CUSTOM6 (Q)">CUSTOM6 (Q)</option>
        <option value="CUSTOM6 (R)">CUSTOM6 (R)</option>
        <option value="CUSTOM6 (S)">CUSTOM6 (S)</option>
        <option value="CUSTOM6 (T)">CUSTOM6 (T)</option>
        <option value="CUSTOM6 (V)">CUSTOM6 (V)</option>
        <option value="CUSTOM6 (W)">CUSTOM6 (W)</option>
        <option value="CUSTOM6 (Y)">CUSTOM6 (Y)</option>
        <option value="CUSTOM7 (A)">CUSTOM7 (A)</option>
        <option value="CUSTOM7 (C)">CUSTOM7 (C)</option>
        <option value="CUSTOM7 (C-term)">CUSTOM7 (C-term)</option>
        <option value="CUSTOM7 (D)">CUSTOM7 (D)</option>
        <option value="CUSTOM7 (E)">CUSTOM7 (E)</option>
        <option value="CUSTOM7 (F)">CUSTOM7 (F)</option>
        <option value="CUSTOM7 (G)">CUSTOM7 (G)</option>
        <option value="CUSTOM7 (H)">CUSTOM7 (H)</option>
        <option value="CUSTOM7 (I)">CUSTOM7 (I)</option>
        <option value="CUSTOM7 (K)">CUSTOM7 (K)</option>
        <option value="CUSTOM7 (L)">CUSTOM7 (L)</option>
        <option value="CUSTOM7 (M)">CUSTOM7 (M)</option>
        <option value="CUSTOM7 (N)">CUSTOM7 (N)</option>
        <option value="CUSTOM7 (N-term)">CUSTOM7 (N-term)</option>
        <option value="CUSTOM7 (P)">CUSTOM7 (P)</option>
        <option value="CUSTOM7 (Q)">CUSTOM7 (Q)</option>
        <option value="CUSTOM7 (R)">CUSTOM7 (R)</option>
        <option value="CUSTOM7 (S)">CUSTOM7 (S)</option>
        <option value="CUSTOM7 (T)">CUSTOM7 (T)</option>
        <option value="CUSTOM7 (V)">CUSTOM7 (V)</option>
        <option value="CUSTOM7 (W)">CUSTOM7 (W)</option>
        <option value="CUSTOM7 (Y)">CUSTOM7 (Y)</option>
        <option value="CUSTOM8 (A)">CUSTOM8 (A)</option>
        <option value="CUSTOM8 (C)">CUSTOM8 (C)</option>
        <option value="CUSTOM8 (C-term)">CUSTOM8 (C-term)</option>
        <option value="CUSTOM8 (D)">CUSTOM8 (D)</option>
        <option value="CUSTOM8 (E)">CUSTOM8 (E)</option>
        <option value="CUSTOM8 (F)">CUSTOM8 (F)</option>
        <option value="CUSTOM8 (G)">CUSTOM8 (G)</option>
        <option value="CUSTOM8 (H)">CUSTOM8 (H)</option>
        <option value="CUSTOM8 (I)">CUSTOM8 (I)</option>
        <option value="CUSTOM8 (K)">CUSTOM8 (K)</option>
        <option value="CUSTOM8 (L)">CUSTOM8 (L)</option>
        <option value="CUSTOM8 (M)">CUSTOM8 (M)</option>
        <option value="CUSTOM8 (N)">CUSTOM8 (N)</option>
        <option value="CUSTOM8 (N-term)">CUSTOM8 (N-term)</option>
        <option value="CUSTOM8 (P)">CUSTOM8 (P)</option>
        <option value="CUSTOM8 (Q)">CUSTOM8 (Q)</option>
        <option value="CUSTOM8 (R)">CUSTOM8 (R)</option>
        <option value="CUSTOM8 (S)">CUSTOM8 (S)</option>
        <option value="CUSTOM8 (T)">CUSTOM8 (T)</option>
        <option value="CUSTOM8 (V)">CUSTOM8 (V)</option>
        <option value="CUSTOM8 (W)">CUSTOM8 (W)</option>
        <option value="CUSTOM8 (Y)">CUSTOM8 (Y)</option>
        <option value="CUSTOM9 (A)">CUSTOM9 (A)</option>
        <option value="CUSTOM9 (C)">CUSTOM9 (C)</option>
        <option value="CUSTOM9 (C-term)">CUSTOM9 (C-term)</option>
        <option value="CUSTOM9 (D)">CUSTOM9 (D)</option>
        <option value="CUSTOM9 (E)">CUSTOM9 (E)</option>
        <option value="CUSTOM9 (F)">CUSTOM9 (F)</option>
        <option value="CUSTOM9 (G)">CUSTOM9 (G)</option>
        <option value="CUSTOM9 (H)">CUSTOM9 (H)</option>
        <option value="CUSTOM9 (I)">CUSTOM9 (I)</option>
        <option value="CUSTOM9 (K)">CUSTOM9 (K)</option>
        <option value="CUSTOM9 (L)">CUSTOM9 (L)</option>
        <option value="CUSTOM9 (M)">CUSTOM9 (M)</option>
        <option value="CUSTOM9 (N)">CUSTOM9 (N)</option>
        <option value="CUSTOM9 (N-term)">CUSTOM9 (N-term)</option>
        <option value="CUSTOM9 (P)">CUSTOM9 (P)</option>
        <option value="CUSTOM9 (Q)">CUSTOM9 (Q)</option>
        <option value="CUSTOM9 (R)">CUSTOM9 (R)</option>
        <option value="CUSTOM9 (S)">CUSTOM9 (S)</option>
        <option value="CUSTOM9 (T)">CUSTOM9 (T)</option>
        <option value="CUSTOM9 (V)">CUSTOM9 (V)</option>
        <option value="CUSTOM9 (W)">CUSTOM9 (W)</option>
        <option value="CUSTOM9 (Y)">CUSTOM9 (Y)</option>
        <option value="Cy3-maleimide (C)">Cy3-maleimide (C)</option>
        <option value="Cy3b-maleimide (C)">Cy3b-maleimide (C)</option>
        <option value="Cyano (C)">Cyano (C)</option>
        <option value="CyDye-Cy3 (C)">CyDye-Cy3 (C)</option>
        <option value="CyDye-Cy5 (C)">CyDye-Cy5 (C)</option>
        <option value="Cys-&gt;Ala (C)">Cys-&gt;Ala (C)</option>
        <option value="Cys-&gt;Arg (C)">Cys-&gt;Arg (C)</option>
        <option value="Cys-&gt;Asn (C)">Cys-&gt;Asn (C)</option>
        <option value="Cys-&gt;Asp (C)">Cys-&gt;Asp (C)</option>
        <option value="Cys-&gt;CamSec (C)">Cys-&gt;CamSec (C)</option>
        <option value="Cys-&gt;Dha (C)">Cys-&gt;Dha (C)</option>
        <option value="Cys-&gt;ethylaminoAla (C)">Cys-&gt;ethylaminoAla (C)</option>
        <option value="Cys-&gt;Gln (C)">Cys-&gt;Gln (C)</option>
        <option value="Cys-&gt;Glu (C)">Cys-&gt;Glu (C)</option>
        <option value="Cys-&gt;Gly (C)">Cys-&gt;Gly (C)</option>
        <option value="Cys-&gt;His (C)">Cys-&gt;His (C)</option>
        <option value="Cys-&gt;Lys (C)">Cys-&gt;Lys (C)</option>
        <option value="Cys-&gt;Met (C)">Cys-&gt;Met (C)</option>
        <option value="Cys-&gt;methylaminoAla (C)">Cys-&gt;methylaminoAla (C)</option>
        <option value="Cys-&gt;Oxoalanine (C)">Cys-&gt;Oxoalanine (C)</option>
        <option value="Cys-&gt;Phe (C)">Cys-&gt;Phe (C)</option>
        <option value="Cys-&gt;Pro (C)">Cys-&gt;Pro (C)</option>
        <option value="Cys-&gt;PyruvicAcid (Protein N-term C)">Cys-&gt;PyruvicAcid (Protein N-term C)</option>
        <option value="Cys-&gt;SecNEM (C)">Cys-&gt;SecNEM (C)</option>
        <option value="Cys-&gt;SecNEM:2H(5) (C)">Cys-&gt;SecNEM:2H(5) (C)</option>
        <option value="Cys-&gt;Ser (C)">Cys-&gt;Ser (C)</option>
        <option value="Cys-&gt;Thr (C)">Cys-&gt;Thr (C)</option>
        <option value="Cys-&gt;Trp (C)">Cys-&gt;Trp (C)</option>
        <option value="Cys-&gt;Tyr (C)">Cys-&gt;Tyr (C)</option>
        <option value="Cys-&gt;Val (C)">Cys-&gt;Val (C)</option>
        <option value="Cys-&gt;Xle (C)">Cys-&gt;Xle (C)</option>
        <option value="Cysteinyl (C)">Cysteinyl (C)</option>
        <option value="cysTMT (C)">cysTMT (C)</option>
        <option value="cysTMT6plex (C)">cysTMT6plex (C)</option>
        <option value="Cytopiloyne (C)">Cytopiloyne (C)</option>
        <option value="Cytopiloyne (K)">Cytopiloyne (K)</option>
        <option value="Cytopiloyne (N-term)">Cytopiloyne (N-term)</option>
        <option value="Cytopiloyne (P)">Cytopiloyne (P)</option>
        <option value="Cytopiloyne (R)">Cytopiloyne (R)</option>
        <option value="Cytopiloyne (S)">Cytopiloyne (S)</option>
        <option value="Cytopiloyne (Y)">Cytopiloyne (Y)</option>
        <option value="Cytopiloyne+water (C)">Cytopiloyne+water (C)</option>
        <option value="Cytopiloyne+water (K)">Cytopiloyne+water (K)</option>
        <option value="Cytopiloyne+water (N-term)">Cytopiloyne+water (N-term)</option>
        <option value="Cytopiloyne+water (R)">Cytopiloyne+water (R)</option>
        <option value="Cytopiloyne+water (S)">Cytopiloyne+water (S)</option>
        <option value="Cytopiloyne+water (T)">Cytopiloyne+water (T)</option>
        <option value="Cytopiloyne+water (Y)">Cytopiloyne+water (Y)</option>
        <option value="DAET (S)">DAET (S)</option>
        <option value="DAET (T)">DAET (T)</option>
        <option value="Dansyl (K)">Dansyl (K)</option>
        <option value="Dansyl (N-term)">Dansyl (N-term)</option>
        <option value="Dap-DSP (A)">Dap-DSP (A)</option>
        <option value="Dap-DSP (E)">Dap-DSP (E)</option>
        <option value="Dap-DSP (K)">Dap-DSP (K)</option>
        <option value="Deamidated (N)">Deamidated (N)</option>
        <option value="Deamidated (Protein N-term F)">Deamidated (Protein N-term F)</option>
        <option value="Deamidated (Q)">Deamidated (Q)</option>
        <option value="Deamidated (R)">Deamidated (R)</option>
        <option value="Deamidated:18O(1) (N)">Deamidated:18O(1) (N)</option>
        <option value="Deamidated:18O(1) (Q)">Deamidated:18O(1) (Q)</option>
        <option value="Decanoyl (S)">Decanoyl (S)</option>
        <option value="Decanoyl (T)">Decanoyl (T)</option>
        <option value="Decarboxylation (D)">Decarboxylation (D)</option>
        <option value="Decarboxylation (E)">Decarboxylation (E)</option>
        <option value="DEDGFLYMVYASQETFG (K)">DEDGFLYMVYASQETFG (K)</option>
        <option value="Dehydrated (D)">Dehydrated (D)</option>
        <option value="Dehydrated (N-term C)">Dehydrated (N-term C)</option>
        <option value="Dehydrated (Protein C-term N)">Dehydrated (Protein C-term N)</option>
        <option value="Dehydrated (Protein C-term Q)">Dehydrated (Protein C-term Q)</option>
        <option value="Dehydrated (S)">Dehydrated (S)</option>
        <option value="Dehydrated (T)">Dehydrated (T)</option>
        <option value="Dehydrated (Y)">Dehydrated (Y)</option>
        <option value="Dehydro (C)">Dehydro (C)</option>
        <option value="Delta:H(-1)N(-1)18O(1) (N)">Delta:H(-1)N(-1)18O(1) (N)</option>
        <option value="Delta:H(-4)O(2) (W)">Delta:H(-4)O(2) (W)</option>
        <option value="Delta:H(-4)O(3) (W)">Delta:H(-4)O(3) (W)</option>
        <option value="Delta:H(10)C(8)O(1) (K)">Delta:H(10)C(8)O(1) (K)</option>
        <option value="Delta:H(2)C(2) (H)">Delta:H(2)C(2) (H)</option>
        <option value="Delta:H(2)C(2) (K)">Delta:H(2)C(2) (K)</option>
        <option value="Delta:H(2)C(2) (N-term)">Delta:H(2)C(2) (N-term)</option>
        <option value="Delta:H(2)C(2) (Protein N-term)">Delta:H(2)C(2) (Protein N-term)</option>
        <option value="Delta:H(2)C(3) (K)">Delta:H(2)C(3) (K)</option>
        <option value="Delta:H(2)C(3)O(1) (K)">Delta:H(2)C(3)O(1) (K)</option>
        <option value="Delta:H(2)C(3)O(1) (R)">Delta:H(2)C(3)O(1) (R)</option>
        <option value="Delta:H(2)C(5) (K)">Delta:H(2)C(5) (K)</option>
        <option value="Delta:H(4)C(2) (H)">Delta:H(4)C(2) (H)</option>
        <option value="Delta:H(4)C(2) (K)">Delta:H(4)C(2) (K)</option>
        <option value="Delta:H(4)C(2) (N-term)">Delta:H(4)C(2) (N-term)</option>
        <option value="Delta:H(4)C(2)O(-1)S(1) (S)">Delta:H(4)C(2)O(-1)S(1) (S)</option>
        <option value="Delta:H(4)C(3) (H)">Delta:H(4)C(3) (H)</option>
        <option value="Delta:H(4)C(3) (K)">Delta:H(4)C(3) (K)</option>
        <option value="Delta:H(4)C(3) (Protein N-term)">Delta:H(4)C(3) (Protein N-term)</option>
        <option value="Delta:H(4)C(3)O(1) (C)">Delta:H(4)C(3)O(1) (C)</option>
        <option value="Delta:H(4)C(3)O(1) (H)">Delta:H(4)C(3)O(1) (H)</option>
        <option value="Delta:H(4)C(3)O(1) (K)">Delta:H(4)C(3)O(1) (K)</option>
        <option value="Delta:H(4)C(3)O(1) (R)">Delta:H(4)C(3)O(1) (R)</option>
        <option value="Delta:H(4)C(3)O(2) (K)">Delta:H(4)C(3)O(2) (K)</option>
        <option value="Delta:H(4)C(5)O(1) (R)">Delta:H(4)C(5)O(1) (R)</option>
        <option value="Delta:H(4)C(6) (K)">Delta:H(4)C(6) (K)</option>
        <option value="Delta:H(5)C(2) (P)">Delta:H(5)C(2) (P)</option>
        <option value="Delta:H(6)C(3)O(1) (C)">Delta:H(6)C(3)O(1) (C)</option>
        <option value="Delta:H(6)C(3)O(1) (H)">Delta:H(6)C(3)O(1) (H)</option>
        <option value="Delta:H(6)C(3)O(1) (K)">Delta:H(6)C(3)O(1) (K)</option>
        <option value="Delta:H(6)C(3)O(1) (Protein N-term)">Delta:H(6)C(3)O(1) (Protein N-term)</option>
        <option value="Delta:H(6)C(6)O(1) (K)">Delta:H(6)C(6)O(1) (K)</option>
        <option value="Delta:H(6)C(7)O(4) (R)">Delta:H(6)C(7)O(4) (R)</option>
        <option value="Delta:H(8)C(6)O(1) (K)">Delta:H(8)C(6)O(1) (K)</option>
        <option value="Delta:H(8)C(6)O(1) (Protein N-term)">Delta:H(8)C(6)O(1) (Protein N-term)</option>
        <option value="Delta:H(8)C(6)O(2) (K)">Delta:H(8)C(6)O(2) (K)</option>
        <option value="Delta:Hg(1) (C)">Delta:Hg(1) (C)</option>
        <option value="Delta:O(4) (W)">Delta:O(4) (W)</option>
        <option value="Delta:S(-1)Se(1) (C)">Delta:S(-1)Se(1) (C)</option>
        <option value="Delta:S(-1)Se(1) (M)">Delta:S(-1)Se(1) (M)</option>
        <option value="Delta:Se(1) (C)">Delta:Se(1) (C)</option>
        <option value="Deoxy (D)">Deoxy (D)</option>
        <option value="Deoxy (S)">Deoxy (S)</option>
        <option value="Deoxy (T)">Deoxy (T)</option>
        <option value="Deoxyhypusine (K)">Deoxyhypusine (K)</option>
        <option value="Deoxyhypusine (Q)">Deoxyhypusine (Q)</option>
        <option value="DeStreak (C)">DeStreak (C)</option>
        <option value="Dethiomethyl (M)">Dethiomethyl (M)</option>
        <option value="dHex (N)">dHex (N)</option>
        <option value="dHex (S)">dHex (S)</option>
        <option value="dHex (T)">dHex (T)</option>
        <option value="dHex(1)Hex(1) (S)">dHex(1)Hex(1) (S)</option>
        <option value="dHex(1)Hex(1) (T)">dHex(1)Hex(1) (T)</option>
        <option value="dHex(1)Hex(1)HexA(1)HexNAc(3) (S)">dHex(1)Hex(1)HexA(1)HexNAc(3) (S)</option>
        <option value="dHex(1)Hex(1)HexA(1)HexNAc(3) (T)">dHex(1)Hex(1)HexA(1)HexNAc(3) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)Kdn(1) (S)">dHex(1)Hex(1)HexNAc(1)Kdn(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)Kdn(1) (T)">dHex(1)Hex(1)HexNAc(1)Kdn(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuAc(1) (S)">dHex(1)Hex(1)HexNAc(1)NeuAc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuAc(1) (T)">dHex(1)Hex(1)HexNAc(1)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuGc(1) (S)">dHex(1)Hex(1)HexNAc(1)NeuGc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(1)NeuGc(1) (T)">dHex(1)Hex(1)HexNAc(1)NeuGc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)Kdn(1) (S)">dHex(1)Hex(1)HexNAc(2)Kdn(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)Kdn(1) (T)">dHex(1)Hex(1)HexNAc(2)Kdn(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1) (S)">dHex(1)Hex(1)HexNAc(2)NeuAc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1) (T)">dHex(1)Hex(1)HexNAc(2)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(2) (S)">dHex(1)Hex(1)HexNAc(2)NeuAc(2) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)NeuAc(2) (T)">dHex(1)Hex(1)HexNAc(2)NeuAc(2) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(2)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(2)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(2)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3) (S)">dHex(1)Hex(1)HexNAc(3) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3) (T)">dHex(1)Hex(1)HexNAc(3) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1) (S)">dHex(1)Hex(1)HexNAc(3)NeuAc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1) (T)">dHex(1)Hex(1)HexNAc(3)NeuAc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuGc(1) (S)">dHex(1)Hex(1)HexNAc(3)NeuGc(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)NeuGc(1) (T)">dHex(1)Hex(1)HexNAc(3)NeuGc(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)Sulf(1) (S)">dHex(1)Hex(1)HexNAc(3)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(3)Sulf(1) (T)">dHex(1)Hex(1)HexNAc(3)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(1)HexNAc(4) (S)">dHex(1)Hex(1)HexNAc(4) (S)</option>
        <option value="dHex(1)Hex(1)HexNAc(4) (T)">dHex(1)Hex(1)HexNAc(4) (T)</option>
        <option value="dHex(1)Hex(2) (S)">dHex(1)Hex(2) (S)</option>
        <option value="dHex(1)Hex(2) (T)">dHex(1)Hex(2) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1) (S)">dHex(1)Hex(2)HexA(1) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1) (T)">dHex(1)Hex(2)HexA(1) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1) (S)">dHex(1)Hex(2)HexA(1)HexNAc(1) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1) (T)">dHex(1)Hex(2)HexA(1)HexNAc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(2) (S)">dHex(1)Hex(2)HexA(1)HexNAc(2) (S)</option>
        <option value="dHex(1)Hex(2)HexA(1)HexNAc(2) (T)">dHex(1)Hex(2)HexA(1)HexNAc(2) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(1) (S)">dHex(1)Hex(2)HexNAc(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(1) (T)">dHex(1)Hex(2)HexNAc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(1)NeuAc(2) (S)">dHex(1)Hex(2)HexNAc(1)NeuAc(2) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(1)NeuAc(2) (T)">dHex(1)Hex(2)HexNAc(1)NeuAc(2) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(2) (S)">dHex(1)Hex(2)HexNAc(2)NeuAc(2) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(2) (T)">dHex(1)Hex(2)HexNAc(2)NeuAc(2) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)">dHex(1)Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(1) (N)">dHex(1)Hex(2)HexNAc(2)NeuGc(1) (N)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(1) (S)">dHex(1)Hex(2)HexNAc(2)NeuGc(1) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(1) (T)">dHex(1)Hex(2)HexNAc(2)NeuGc(1) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(2) (S)">dHex(1)Hex(2)HexNAc(2)NeuGc(2) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(2) (T)">dHex(1)Hex(2)HexNAc(2)NeuGc(2) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(3) (S)">dHex(1)Hex(2)HexNAc(2)NeuGc(3) (S)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)NeuGc(3) (T)">dHex(1)Hex(2)HexNAc(2)NeuGc(3) (T)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)Pent(1) (N)">dHex(1)Hex(2)HexNAc(2)Pent(1) (N)</option>
        <option value="dHex(1)Hex(2)HexNAc(2)Sulf(1) (S)">dHex(1)Hex(2)HexNAc(2)Sulf(1) (S)</option>
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        <option value="dHex(4)Hex(2)HexNAc(3) (T)">dHex(4)Hex(2)HexNAc(3) (T)</option>
        <option value="dHex(4)Hex(3)HexNAc(2)NeuAc(1) (S)">dHex(4)Hex(3)HexNAc(2)NeuAc(1) (S)</option>
        <option value="dHex(4)Hex(3)HexNAc(2)NeuAc(1) (T)">dHex(4)Hex(3)HexNAc(2)NeuAc(1) (T)</option>
        <option value="dHex(4)Hex(3)HexNAc(3) (S)">dHex(4)Hex(3)HexNAc(3) (S)</option>
        <option value="dHex(4)Hex(3)HexNAc(3) (T)">dHex(4)Hex(3)HexNAc(3) (T)</option>
        <option value="dHex(4)HexNAc(3)Kdn(1) (S)">dHex(4)HexNAc(3)Kdn(1) (S)</option>
        <option value="dHex(4)HexNAc(3)Kdn(1) (T)">dHex(4)HexNAc(3)Kdn(1) (T)</option>
        <option value="DHP (C)">DHP (C)</option>
        <option value="Diacylglycerol (C)">Diacylglycerol (C)</option>
        <option value="DiART6plex (K)">DiART6plex (K)</option>
        <option value="DiART6plex (N-term)">DiART6plex (N-term)</option>
        <option value="DiART6plex (Protein N-term)">DiART6plex (Protein N-term)</option>
        <option value="DiART6plex (Y)">DiART6plex (Y)</option>
        <option value="DiART6plex115 (K)">DiART6plex115 (K)</option>
        <option value="DiART6plex115 (N-term)">DiART6plex115 (N-term)</option>
        <option value="DiART6plex115 (Protein N-term)">DiART6plex115 (Protein N-term)</option>
        <option value="DiART6plex115 (Y)">DiART6plex115 (Y)</option>
        <option value="DiART6plex116/119 (K)">DiART6plex116/119 (K)</option>
        <option value="DiART6plex116/119 (N-term)">DiART6plex116/119 (N-term)</option>
        <option value="DiART6plex116/119 (Protein N-term)">DiART6plex116/119 (Protein N-term)</option>
        <option value="DiART6plex116/119 (Y)">DiART6plex116/119 (Y)</option>
        <option value="DiART6plex117 (K)">DiART6plex117 (K)</option>
        <option value="DiART6plex117 (N-term)">DiART6plex117 (N-term)</option>
        <option value="DiART6plex117 (Protein N-term)">DiART6plex117 (Protein N-term)</option>
        <option value="DiART6plex117 (Y)">DiART6plex117 (Y)</option>
        <option value="DiART6plex118 (K)">DiART6plex118 (K)</option>
        <option value="DiART6plex118 (N-term)">DiART6plex118 (N-term)</option>
        <option value="DiART6plex118 (Protein N-term)">DiART6plex118 (Protein N-term)</option>
        <option value="DiART6plex118 (Y)">DiART6plex118 (Y)</option>
        <option value="Dibromo (Y)">Dibromo (Y)</option>
        <option value="Dicarbamidomethyl (C)">Dicarbamidomethyl (C)</option>
        <option value="Dicarbamidomethyl (H)">Dicarbamidomethyl (H)</option>
        <option value="Dicarbamidomethyl (K)">Dicarbamidomethyl (K)</option>
        <option value="Dicarbamidomethyl (N-term)">Dicarbamidomethyl (N-term)</option>
        <option value="Dicarbamidomethyl (R)">Dicarbamidomethyl (R)</option>
        <option value="dichlorination (C)">dichlorination (C)</option>
        <option value="dichlorination (Y)">dichlorination (Y)</option>
        <option value="Didehydro (C-term K)">Didehydro (C-term K)</option>
        <option value="Didehydro (S)">Didehydro (S)</option>
        <option value="Didehydro (T)">Didehydro (T)</option>
        <option value="Didehydro (Y)">Didehydro (Y)</option>
        <option value="Didehydroretinylidene (K)">Didehydroretinylidene (K)</option>
        <option value="Diethyl (K)">Diethyl (K)</option>
        <option value="Diethyl (N-term)">Diethyl (N-term)</option>
        <option value="Diethylphosphate (C)">Diethylphosphate (C)</option>
        <option value="Diethylphosphate (H)">Diethylphosphate (H)</option>
        <option value="Diethylphosphate (K)">Diethylphosphate (K)</option>
        <option value="Diethylphosphate (N-term)">Diethylphosphate (N-term)</option>
        <option value="Diethylphosphate (S)">Diethylphosphate (S)</option>
        <option value="Diethylphosphate (T)">Diethylphosphate (T)</option>
        <option value="Diethylphosphate (Y)">Diethylphosphate (Y)</option>
        <option value="Diethylphosphothione (C)">Diethylphosphothione (C)</option>
        <option value="Diethylphosphothione (H)">Diethylphosphothione (H)</option>
        <option value="Diethylphosphothione (K)">Diethylphosphothione (K)</option>
        <option value="Diethylphosphothione (S)">Diethylphosphothione (S)</option>
        <option value="Diethylphosphothione (T)">Diethylphosphothione (T)</option>
        <option value="Diethylphosphothione (Y)">Diethylphosphothione (Y)</option>
        <option value="Difuran (Y)">Difuran (Y)</option>
        <option value="Dihydroxyimidazolidine (R)">Dihydroxyimidazolidine (R)</option>
        <option value="Diiodo (H)">Diiodo (H)</option>
        <option value="Diiodo (Y)">Diiodo (Y)</option>
        <option value="Diironsubcluster (C)">Diironsubcluster (C)</option>
        <option value="Diisopropylphosphate (K)">Diisopropylphosphate (K)</option>
        <option value="Diisopropylphosphate (N-term)">Diisopropylphosphate (N-term)</option>
        <option value="Diisopropylphosphate (S)">Diisopropylphosphate (S)</option>
        <option value="Diisopropylphosphate (T)">Diisopropylphosphate (T)</option>
        <option value="Diisopropylphosphate (Y)">Diisopropylphosphate (Y)</option>
        <option value="DiLeu4plex (K)">DiLeu4plex (K)</option>
        <option value="DiLeu4plex (N-term)">DiLeu4plex (N-term)</option>
        <option value="DiLeu4plex (Y)">DiLeu4plex (Y)</option>
        <option value="DiLeu4plex115 (K)">DiLeu4plex115 (K)</option>
        <option value="DiLeu4plex115 (N-term)">DiLeu4plex115 (N-term)</option>
        <option value="DiLeu4plex115 (Y)">DiLeu4plex115 (Y)</option>
        <option value="DiLeu4plex117 (K)">DiLeu4plex117 (K)</option>
        <option value="DiLeu4plex117 (N-term)">DiLeu4plex117 (N-term)</option>
        <option value="DiLeu4plex117 (Y)">DiLeu4plex117 (Y)</option>
        <option value="DiLeu4plex118 (K)">DiLeu4plex118 (K)</option>
        <option value="DiLeu4plex118 (N-term)">DiLeu4plex118 (N-term)</option>
        <option value="DiLeu4plex118 (Y)">DiLeu4plex118 (Y)</option>
        <option value="Dimethyl (K)">Dimethyl (K)</option>
        <option value="Dimethyl (N)">Dimethyl (N)</option>
        <option value="Dimethyl (N-term)">Dimethyl (N-term)</option>
        <option value="Dimethyl (Protein N-term P)">Dimethyl (Protein N-term P)</option>
        <option value="Dimethyl (Protein N-term)">Dimethyl (Protein N-term)</option>
        <option value="Dimethyl (R)">Dimethyl (R)</option>
        <option value="Dimethyl:2H(2)13C (K)">Dimethyl:2H(2)13C (K)</option>
        <option value="Dimethyl:2H(2)13C (N)">Dimethyl:2H(2)13C (N)</option>
        <option value="Dimethyl:2H(2)13C (N-term)">Dimethyl:2H(2)13C (N-term)</option>
        <option value="Dimethyl:2H(2)13C (Protein N-term P)">Dimethyl:2H(2)13C (Protein N-term P)</option>
        <option value="Dimethyl:2H(2)13C (R)">Dimethyl:2H(2)13C (R)</option>
        <option value="Dimethyl:2H(4) (K)">Dimethyl:2H(4) (K)</option>
        <option value="Dimethyl:2H(4) (N-term)">Dimethyl:2H(4) (N-term)</option>
        <option value="Dimethyl:2H(4) (Protein N-term)">Dimethyl:2H(4) (Protein N-term)</option>
        <option value="Dimethyl:2H(4) (R)">Dimethyl:2H(4) (R)</option>
        <option value="Dimethyl:2H(4)13C(2) (K)">Dimethyl:2H(4)13C(2) (K)</option>
        <option value="Dimethyl:2H(4)13C(2) (N-term)">Dimethyl:2H(4)13C(2) (N-term)</option>
        <option value="Dimethyl:2H(4)13C(2) (Protein N-term)">Dimethyl:2H(4)13C(2) (Protein N-term)</option>
        <option value="Dimethyl:2H(4)13C(2) (R)">Dimethyl:2H(4)13C(2) (R)</option>
        <option value="Dimethyl:2H(6) (K)">Dimethyl:2H(6) (K)</option>
        <option value="Dimethyl:2H(6) (N-term)">Dimethyl:2H(6) (N-term)</option>
        <option value="Dimethyl:2H(6) (R)">Dimethyl:2H(6) (R)</option>
        <option value="Dimethyl:2H(6)13C(2) (K)">Dimethyl:2H(6)13C(2) (K)</option>
        <option value="Dimethyl:2H(6)13C(2) (N-term)">Dimethyl:2H(6)13C(2) (N-term)</option>
        <option value="Dimethyl:2H(6)13C(2) (Protein N-term)">Dimethyl:2H(6)13C(2) (Protein N-term)</option>
        <option value="Dimethyl:2H(6)13C(2) (R)">Dimethyl:2H(6)13C(2) (R)</option>
        <option value="DimethylamineGMBS (C)">DimethylamineGMBS (C)</option>
        <option value="Dimethylaminoethyl (C)">Dimethylaminoethyl (C)</option>
        <option value="DimethylArsino (C)">DimethylArsino (C)</option>
        <option value="Dimethylphosphothione (C)">Dimethylphosphothione (C)</option>
        <option value="Dimethylphosphothione (H)">Dimethylphosphothione (H)</option>
        <option value="Dimethylphosphothione (K)">Dimethylphosphothione (K)</option>
        <option value="Dimethylphosphothione (S)">Dimethylphosphothione (S)</option>
        <option value="Dimethylphosphothione (T)">Dimethylphosphothione (T)</option>
        <option value="Dimethylphosphothione (Y)">Dimethylphosphothione (Y)</option>
        <option value="DimethylpyrroleAdduct (K)">DimethylpyrroleAdduct (K)</option>
        <option value="Dioxidation (C)">Dioxidation (C)</option>
        <option value="Dioxidation (E)">Dioxidation (E)</option>
        <option value="Dioxidation (F)">Dioxidation (F)</option>
        <option value="Dioxidation (I)">Dioxidation (I)</option>
        <option value="Dioxidation (K)">Dioxidation (K)</option>
        <option value="Dioxidation (L)">Dioxidation (L)</option>
        <option value="Dioxidation (M)">Dioxidation (M)</option>
        <option value="Dioxidation (P)">Dioxidation (P)</option>
        <option value="Dioxidation (R)">Dioxidation (R)</option>
        <option value="Dioxidation (U)">Dioxidation (U)</option>
        <option value="Dioxidation (V)">Dioxidation (V)</option>
        <option value="Dioxidation (W)">Dioxidation (W)</option>
        <option value="Dioxidation (Y)">Dioxidation (Y)</option>
        <option value="Diphthamide (H)">Diphthamide (H)</option>
        <option value="Dipyridyl (C)">Dipyridyl (C)</option>
        <option value="Dipyrrolylmethanemethyl (C)">Dipyrrolylmethanemethyl (C)</option>
        <option value="DMPO (C)">DMPO (C)</option>
        <option value="DMPO (H)">DMPO (H)</option>
        <option value="DMPO (Y)">DMPO (Y)</option>
        <option value="DNCB_hapten (C)">DNCB_hapten (C)</option>
        <option value="DNCB_hapten (H)">DNCB_hapten (H)</option>
        <option value="DNCB_hapten (K)">DNCB_hapten (K)</option>
        <option value="DNCB_hapten (Y)">DNCB_hapten (Y)</option>
        <option value="dNIC (K)">dNIC (K)</option>
        <option value="dNIC (N-term)">dNIC (N-term)</option>
        <option value="DNPS (C)">DNPS (C)</option>
        <option value="DNPS (W)">DNPS (W)</option>
        <option value="DTT (C)">DTT (C)</option>
        <option value="DyLight-maleimide (C)">DyLight-maleimide (C)</option>
        <option value="DYn-2 (C)">DYn-2 (C)</option>
        <option value="EDEDTIDVFQQQTGG (K)">EDEDTIDVFQQQTGG (K)</option>
        <option value="EDT-iodoacetyl-PEO-biotin (S)">EDT-iodoacetyl-PEO-biotin (S)</option>
        <option value="EDT-iodoacetyl-PEO-biotin (T)">EDT-iodoacetyl-PEO-biotin (T)</option>
        <option value="EDT-maleimide-PEO-biotin (S)">EDT-maleimide-PEO-biotin (S)</option>
        <option value="EDT-maleimide-PEO-biotin (T)">EDT-maleimide-PEO-biotin (T)</option>
        <option value="EEEDVIEVYQEQTGG (K)">EEEDVIEVYQEQTGG (K)</option>
        <option value="EGCG1 (C)">EGCG1 (C)</option>
        <option value="EGCG2 (C)">EGCG2 (C)</option>
        <option value="EHD-diphenylpentanone (C)">EHD-diphenylpentanone (C)</option>
        <option value="EHD-diphenylpentanone (M)">EHD-diphenylpentanone (M)</option>
        <option value="EQAT (C)">EQAT (C)</option>
        <option value="EQAT:2H(5) (C)">EQAT:2H(5) (C)</option>
        <option value="EQIGG (K)">EQIGG (K)</option>
        <option value="ESP (K)">ESP (K)</option>
        <option value="ESP (N-term)">ESP (N-term)</option>
        <option value="ESP:2H(10) (K)">ESP:2H(10) (K)</option>
        <option value="ESP:2H(10) (N-term)">ESP:2H(10) (N-term)</option>
        <option value="Ethanedithiol (S)">Ethanedithiol (S)</option>
        <option value="Ethanedithiol (T)">Ethanedithiol (T)</option>
        <option value="Ethanolamine (C)">Ethanolamine (C)</option>
        <option value="Ethanolamine (C-term)">Ethanolamine (C-term)</option>
        <option value="Ethanolamine (D)">Ethanolamine (D)</option>
        <option value="Ethanolamine (E)">Ethanolamine (E)</option>
        <option value="Ethanolyl (C)">Ethanolyl (C)</option>
        <option value="Ethanolyl (K)">Ethanolyl (K)</option>
        <option value="Ethanolyl (R)">Ethanolyl (R)</option>
        <option value="Ethyl (C-term)">Ethyl (C-term)</option>
        <option value="Ethyl (D)">Ethyl (D)</option>
        <option value="Ethyl (E)">Ethyl (E)</option>
        <option value="Ethyl (K)">Ethyl (K)</option>
        <option value="Ethyl (N-term)">Ethyl (N-term)</option>
        <option value="Ethyl (Protein N-term)">Ethyl (Protein N-term)</option>
        <option value="Ethyl+Deamidated (N)">Ethyl+Deamidated (N)</option>
        <option value="Ethyl+Deamidated (Q)">Ethyl+Deamidated (Q)</option>
        <option value="ethylamino (S)">ethylamino (S)</option>
        <option value="ethylamino (T)">ethylamino (T)</option>
        <option value="Ethylphosphate (K)">Ethylphosphate (K)</option>
        <option value="Ethylphosphate (N-term)">Ethylphosphate (N-term)</option>
        <option value="Ethylphosphate (S)">Ethylphosphate (S)</option>
        <option value="Ethylphosphate (T)">Ethylphosphate (T)</option>
        <option value="Ethylphosphate (Y)">Ethylphosphate (Y)</option>
        <option value="ethylsulfonylethyl (C)">ethylsulfonylethyl (C)</option>
        <option value="ethylsulfonylethyl (H)">ethylsulfonylethyl (H)</option>
        <option value="ethylsulfonylethyl (K)">ethylsulfonylethyl (K)</option>
        <option value="ExacTagAmine (K)">ExacTagAmine (K)</option>
        <option value="ExacTagThiol (C)">ExacTagThiol (C)</option>
        <option value="FAD (C)">FAD (C)</option>
        <option value="FAD (H)">FAD (H)</option>
        <option value="FAD (Y)">FAD (Y)</option>
        <option value="Farnesyl (C)">Farnesyl (C)</option>
        <option value="Fluorescein (C)">Fluorescein (C)</option>
        <option value="Fluorescein-tyramine (Y)">Fluorescein-tyramine (Y)</option>
        <option value="Fluoro (A)">Fluoro (A)</option>
        <option value="Fluoro (F)">Fluoro (F)</option>
        <option value="Fluoro (W)">Fluoro (W)</option>
        <option value="Fluoro (Y)">Fluoro (Y)</option>
        <option value="FMN (S)">FMN (S)</option>
        <option value="FMN (T)">FMN (T)</option>
        <option value="FMNC (C)">FMNC (C)</option>
        <option value="FMNH (C)">FMNH (C)</option>
        <option value="FMNH (H)">FMNH (H)</option>
        <option value="FNEM (C)">FNEM (C)</option>
        <option value="Formyl (K)">Formyl (K)</option>
        <option value="Formyl (N-term)">Formyl (N-term)</option>
        <option value="Formyl (Protein N-term)">Formyl (Protein N-term)</option>
        <option value="Formyl (S)">Formyl (S)</option>
        <option value="Formyl (T)">Formyl (T)</option>
        <option value="Formylasparagine (H)">Formylasparagine (H)</option>
        <option value="FormylMet (Protein N-term)">FormylMet (Protein N-term)</option>
        <option value="FP-Biotin (K)">FP-Biotin (K)</option>
        <option value="FP-Biotin (S)">FP-Biotin (S)</option>
        <option value="FP-Biotin (T)">FP-Biotin (T)</option>
        <option value="FP-Biotin (Y)">FP-Biotin (Y)</option>
        <option value="FTC (C)">FTC (C)</option>
        <option value="FTC (K)">FTC (K)</option>
        <option value="FTC (P)">FTC (P)</option>
        <option value="FTC (R)">FTC (R)</option>
        <option value="FTC (S)">FTC (S)</option>
        <option value="Furan (Y)">Furan (Y)</option>
        <option value="G-H1 (R)">G-H1 (R)</option>
        <option value="Galactosyl (K)">Galactosyl (K)</option>
        <option value="Galactosyl (N-term)">Galactosyl (N-term)</option>
        <option value="GEE (Q)">GEE (Q)</option>
        <option value="GeranylGeranyl (C)">GeranylGeranyl (C)</option>
        <option value="GG (C)">GG (C)</option>
        <option value="GG (K)">GG (K)</option>
        <option value="GG (Protein N-term)">GG (Protein N-term)</option>
        <option value="GG (S)">GG (S)</option>
        <option value="GG (T)">GG (T)</option>
        <option value="GGQ (K)">GGQ (K)</option>
        <option value="GIST-Quat (K)">GIST-Quat (K)</option>
        <option value="GIST-Quat (N-term)">GIST-Quat (N-term)</option>
        <option value="GIST-Quat:2H(3) (K)">GIST-Quat:2H(3) (K)</option>
        <option value="GIST-Quat:2H(3) (N-term)">GIST-Quat:2H(3) (N-term)</option>
        <option value="GIST-Quat:2H(6) (K)">GIST-Quat:2H(6) (K)</option>
        <option value="GIST-Quat:2H(6) (N-term)">GIST-Quat:2H(6) (N-term)</option>
        <option value="GIST-Quat:2H(9) (K)">GIST-Quat:2H(9) (K)</option>
        <option value="GIST-Quat:2H(9) (N-term)">GIST-Quat:2H(9) (N-term)</option>
        <option value="Gln-&gt;Ala (Q)">Gln-&gt;Ala (Q)</option>
        <option value="Gln-&gt;Arg (Q)">Gln-&gt;Arg (Q)</option>
        <option value="Gln-&gt;Asn (Q)">Gln-&gt;Asn (Q)</option>
        <option value="Gln-&gt;Asp (Q)">Gln-&gt;Asp (Q)</option>
        <option value="Gln-&gt;Cys (Q)">Gln-&gt;Cys (Q)</option>
        <option value="Gln-&gt;Glu (Q)">Gln-&gt;Glu (Q)</option>
        <option value="Gln-&gt;Gly (Q)">Gln-&gt;Gly (Q)</option>
        <option value="Gln-&gt;His (Q)">Gln-&gt;His (Q)</option>
        <option value="Gln-&gt;Lys (Q)">Gln-&gt;Lys (Q)</option>
        <option value="Gln-&gt;Met (Q)">Gln-&gt;Met (Q)</option>
        <option value="Gln-&gt;Phe (Q)">Gln-&gt;Phe (Q)</option>
        <option value="Gln-&gt;Pro (Q)">Gln-&gt;Pro (Q)</option>
        <option value="Gln-&gt;pyro-Glu (N-term Q)">Gln-&gt;pyro-Glu (N-term Q)</option>
        <option value="Gln-&gt;Ser (Q)">Gln-&gt;Ser (Q)</option>
        <option value="Gln-&gt;Thr (Q)">Gln-&gt;Thr (Q)</option>
        <option value="Gln-&gt;Trp (Q)">Gln-&gt;Trp (Q)</option>
        <option value="Gln-&gt;Tyr (Q)">Gln-&gt;Tyr (Q)</option>
        <option value="Gln-&gt;Val (Q)">Gln-&gt;Val (Q)</option>
        <option value="Gln-&gt;Xle (Q)">Gln-&gt;Xle (Q)</option>
        <option value="Glu (E)">Glu (E)</option>
        <option value="Glu (Protein C-term)">Glu (Protein C-term)</option>
        <option value="Glu+O(2) (H)">Glu+O(2) (H)</option>
        <option value="Glu-&gt;Ala (E)">Glu-&gt;Ala (E)</option>
        <option value="Glu-&gt;Arg (E)">Glu-&gt;Arg (E)</option>
        <option value="Glu-&gt;Asn (E)">Glu-&gt;Asn (E)</option>
        <option value="Glu-&gt;Asp (E)">Glu-&gt;Asp (E)</option>
        <option value="Glu-&gt;Cys (E)">Glu-&gt;Cys (E)</option>
        <option value="Glu-&gt;Gln (E)">Glu-&gt;Gln (E)</option>
        <option value="Glu-&gt;Gly (E)">Glu-&gt;Gly (E)</option>
        <option value="Glu-&gt;His (E)">Glu-&gt;His (E)</option>
        <option value="Glu-&gt;Lys (E)">Glu-&gt;Lys (E)</option>
        <option value="Glu-&gt;Met (E)">Glu-&gt;Met (E)</option>
        <option value="Glu-&gt;Phe (E)">Glu-&gt;Phe (E)</option>
        <option value="Glu-&gt;Pro (E)">Glu-&gt;Pro (E)</option>
        <option value="Glu-&gt;pyro-Glu (N-term E)">Glu-&gt;pyro-Glu (N-term E)</option>
        <option value="Glu-&gt;pyro-Glu+Methyl (N-term E)">Glu-&gt;pyro-Glu+Methyl (N-term E)</option>
        <option value="Glu-&gt;pyro-Glu+Methyl:2H(2)13C(1) (N-term E)">Glu-&gt;pyro-Glu+Methyl:2H(2)13C(1) (N-term E)</option>
        <option value="Glu-&gt;Ser (E)">Glu-&gt;Ser (E)</option>
        <option value="Glu-&gt;Thr (E)">Glu-&gt;Thr (E)</option>
        <option value="Glu-&gt;Trp (E)">Glu-&gt;Trp (E)</option>
        <option value="Glu-&gt;Tyr (E)">Glu-&gt;Tyr (E)</option>
        <option value="Glu-&gt;Val (E)">Glu-&gt;Val (E)</option>
        <option value="Glu-&gt;Xle (E)">Glu-&gt;Xle (E)</option>
        <option value="glucosone (R)">glucosone (R)</option>
        <option value="Glucosylgalactosyl (K)">Glucosylgalactosyl (K)</option>
        <option value="Glucuronyl (Protein N-term)">Glucuronyl (Protein N-term)</option>
        <option value="Glucuronyl (S)">Glucuronyl (S)</option>
        <option value="Glucuronyl (T)">Glucuronyl (T)</option>
        <option value="GluGlu (E)">GluGlu (E)</option>
        <option value="GluGlu (Protein C-term)">GluGlu (Protein C-term)</option>
        <option value="GluGluGlu (E)">GluGluGlu (E)</option>
        <option value="GluGluGlu (Protein C-term)">GluGluGlu (Protein C-term)</option>
        <option value="GluGluGluGlu (E)">GluGluGluGlu (E)</option>
        <option value="GluGluGluGlu (Protein C-term)">GluGluGluGlu (Protein C-term)</option>
        <option value="Gluratylation (K)">Gluratylation (K)</option>
        <option value="Glutathione (C)">Glutathione (C)</option>
        <option value="Gly (K)">Gly (K)</option>
        <option value="Gly (S)">Gly (S)</option>
        <option value="Gly (T)">Gly (T)</option>
        <option value="Gly+O(2) (H)">Gly+O(2) (H)</option>
        <option value="Gly-&gt;Ala (G)">Gly-&gt;Ala (G)</option>
        <option value="Gly-&gt;Arg (G)">Gly-&gt;Arg (G)</option>
        <option value="Gly-&gt;Asn (G)">Gly-&gt;Asn (G)</option>
        <option value="Gly-&gt;Asp (G)">Gly-&gt;Asp (G)</option>
        <option value="Gly-&gt;Cys (G)">Gly-&gt;Cys (G)</option>
        <option value="Gly-&gt;Gln (G)">Gly-&gt;Gln (G)</option>
        <option value="Gly-&gt;Glu (G)">Gly-&gt;Glu (G)</option>
        <option value="Gly-&gt;His (G)">Gly-&gt;His (G)</option>
        <option value="Gly-&gt;Lys (G)">Gly-&gt;Lys (G)</option>
        <option value="Gly-&gt;Met (G)">Gly-&gt;Met (G)</option>
        <option value="Gly-&gt;Phe (G)">Gly-&gt;Phe (G)</option>
        <option value="Gly-&gt;Pro (G)">Gly-&gt;Pro (G)</option>
        <option value="Gly-&gt;Ser (G)">Gly-&gt;Ser (G)</option>
        <option value="Gly-&gt;Thr (G)">Gly-&gt;Thr (G)</option>
        <option value="Gly-&gt;Trp (G)">Gly-&gt;Trp (G)</option>
        <option value="Gly-&gt;Tyr (G)">Gly-&gt;Tyr (G)</option>
        <option value="Gly-&gt;Val (G)">Gly-&gt;Val (G)</option>
        <option value="Gly-&gt;Xle (G)">Gly-&gt;Xle (G)</option>
        <option value="Gly-loss+Amide (C-term G)">Gly-loss+Amide (C-term G)</option>
        <option value="Glycerophospho (S)">Glycerophospho (S)</option>
        <option value="GlycerylPE (E)">GlycerylPE (E)</option>
        <option value="glycidamide (K)">glycidamide (K)</option>
        <option value="glycidamide (N-term)">glycidamide (N-term)</option>
        <option value="Glycosyl (P)">Glycosyl (P)</option>
        <option value="glyoxalAGE (R)">glyoxalAGE (R)</option>
        <option value="GNLLFLACYCIGG (K)">GNLLFLACYCIGG (K)</option>
        <option value="GPIanchor (Protein C-term)">GPIanchor (Protein C-term)</option>
        <option value="Guanidinyl (K)">Guanidinyl (K)</option>
        <option value="Guanidinyl (N-term)">Guanidinyl (N-term)</option>
        <option value="Haloxon (C)">Haloxon (C)</option>
        <option value="Haloxon (H)">Haloxon (H)</option>
        <option value="Haloxon (K)">Haloxon (K)</option>
        <option value="Haloxon (S)">Haloxon (S)</option>
        <option value="Haloxon (T)">Haloxon (T)</option>
        <option value="Haloxon (Y)">Haloxon (Y)</option>
        <option value="HCysteinyl (C)">HCysteinyl (C)</option>
        <option value="HCysThiolactone (K)">HCysThiolactone (K)</option>
        <option value="Heme (C)">Heme (C)</option>
        <option value="Heme (H)">Heme (H)</option>
        <option value="Hep (K)">Hep (K)</option>
        <option value="Hep (N)">Hep (N)</option>
        <option value="Hep (Q)">Hep (Q)</option>
        <option value="Hep (R)">Hep (R)</option>
        <option value="Hep (S)">Hep (S)</option>
        <option value="Hep (T)">Hep (T)</option>
        <option value="Hex (C)">Hex (C)</option>
        <option value="Hex (K)">Hex (K)</option>
        <option value="Hex (N)">Hex (N)</option>
        <option value="Hex (N-term)">Hex (N-term)</option>
        <option value="Hex (R)">Hex (R)</option>
        <option value="Hex (S)">Hex (S)</option>
        <option value="Hex (T)">Hex (T)</option>
        <option value="Hex (W)">Hex (W)</option>
        <option value="Hex (Y)">Hex (Y)</option>
        <option value="Hex(1)HexA(1) (S)">Hex(1)HexA(1) (S)</option>
        <option value="Hex(1)HexA(1) (T)">Hex(1)HexA(1) (T)</option>
        <option value="Hex(1)HexA(1)HexNAc(1) (S)">Hex(1)HexA(1)HexNAc(1) (S)</option>
        <option value="Hex(1)HexA(1)HexNAc(1) (T)">Hex(1)HexA(1)HexNAc(1) (T)</option>
        <option value="Hex(1)HexA(1)HexNAc(2) (S)">Hex(1)HexA(1)HexNAc(2) (S)</option>
        <option value="Hex(1)HexA(1)HexNAc(2) (T)">Hex(1)HexA(1)HexNAc(2) (T)</option>
        <option value="Hex(1)HexNAc(1) (N)">Hex(1)HexNAc(1) (N)</option>
        <option value="Hex(1)HexNAc(1) (S)">Hex(1)HexNAc(1) (S)</option>
        <option value="Hex(1)HexNAc(1) (T)">Hex(1)HexNAc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (N)">Hex(1)HexNAc(1)dHex(1) (N)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (S)">Hex(1)HexNAc(1)dHex(1) (S)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (T)">Hex(1)HexNAc(1)dHex(1) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(1) (S)">Hex(1)HexNAc(1)dHex(1)Me(1) (S)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(1) (T)">Hex(1)HexNAc(1)dHex(1)Me(1) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(2) (S)">Hex(1)HexNAc(1)dHex(1)Me(2) (S)</option>
        <option value="Hex(1)HexNAc(1)dHex(1)Me(2) (T)">Hex(1)HexNAc(1)dHex(1)Me(2) (T)</option>
        <option value="Hex(1)HexNAc(1)Kdn(1)Sulf(1) (S)">Hex(1)HexNAc(1)Kdn(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(1)Kdn(1)Sulf(1) (T)">Hex(1)HexNAc(1)Kdn(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (N)">Hex(1)HexNAc(1)NeuAc(1) (N)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (S)">Hex(1)HexNAc(1)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (T)">Hex(1)HexNAc(1)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Ac(1) (S)">Hex(1)HexNAc(1)NeuAc(1)Ac(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Ac(1) (T)">Hex(1)HexNAc(1)NeuAc(1)Ac(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (S)">Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (T)">Hex(1)HexNAc(1)NeuAc(1)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (S)">Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (T)">Hex(1)HexNAc(1)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (N)">Hex(1)HexNAc(1)NeuAc(2) (N)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (S)">Hex(1)HexNAc(1)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (T)">Hex(1)HexNAc(1)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(1) (S)">Hex(1)HexNAc(1)NeuAc(2)Ac(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(1) (T)">Hex(1)HexNAc(1)NeuAc(2)Ac(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(2) (S)">Hex(1)HexNAc(1)NeuAc(2)Ac(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2)Ac(2) (T)">Hex(1)HexNAc(1)NeuAc(2)Ac(2) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(3) (S)">Hex(1)HexNAc(1)NeuAc(3) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(3) (T)">Hex(1)HexNAc(1)NeuAc(3) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(1) (S)">Hex(1)HexNAc(1)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(1) (T)">Hex(1)HexNAc(1)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(2) (S)">Hex(1)HexNAc(1)NeuGc(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(2) (T)">Hex(1)HexNAc(1)NeuGc(2) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(3) (S)">Hex(1)HexNAc(1)NeuGc(3) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(3) (T)">Hex(1)HexNAc(1)NeuGc(3) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(4) (S)">Hex(1)HexNAc(1)NeuGc(4) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(4) (T)">Hex(1)HexNAc(1)NeuGc(4) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(5) (S)">Hex(1)HexNAc(1)NeuGc(5) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuGc(5) (T)">Hex(1)HexNAc(1)NeuGc(5) (T)</option>
        <option value="Hex(1)HexNAc(1)Phos(1) (S)">Hex(1)HexNAc(1)Phos(1) (S)</option>
        <option value="Hex(1)HexNAc(1)Phos(1) (T)">Hex(1)HexNAc(1)Phos(1) (T)</option>
        <option value="Hex(1)HexNAc(1)Sulf(1) (S)">Hex(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(1)Sulf(1) (T)">Hex(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2) (N)">Hex(1)HexNAc(2) (N)</option>
        <option value="Hex(1)HexNAc(2) (S)">Hex(1)HexNAc(2) (S)</option>
        <option value="Hex(1)HexNAc(2) (T)">Hex(1)HexNAc(2) (T)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (N)">Hex(1)HexNAc(2)dHex(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (S)">Hex(1)HexNAc(2)dHex(1) (S)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (T)">Hex(1)HexNAc(2)dHex(1) (T)</option>
        <option value="Hex(1)HexNAc(2)dHex(1)Pent(1) (N)">Hex(1)HexNAc(2)dHex(1)Pent(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (N)">Hex(1)HexNAc(2)dHex(2) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (S)">Hex(1)HexNAc(2)dHex(2) (S)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (T)">Hex(1)HexNAc(2)dHex(2) (T)</option>
        <option value="Hex(1)HexNAc(2)dHex(2)Sulf(1) (S)">Hex(1)HexNAc(2)dHex(2)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)dHex(2)Sulf(1) (T)">Hex(1)HexNAc(2)dHex(2)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1) (S)">Hex(1)HexNAc(2)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1) (T)">Hex(1)HexNAc(2)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)">Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)">Hex(1)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2) (S)">Hex(1)HexNAc(2)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2) (T)">Hex(1)HexNAc(2)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (S)">Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (T)">Hex(1)HexNAc(2)NeuAc(2)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(2)NeuGc(1) (S)">Hex(1)HexNAc(2)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(2)NeuGc(1) (T)">Hex(1)HexNAc(2)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(2)Pent(1) (N)">Hex(1)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(1)HexNAc(2)Sulf(1) (S)">Hex(1)HexNAc(2)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(2)Sulf(1) (T)">Hex(1)HexNAc(2)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(3) (S)">Hex(1)HexNAc(3) (S)</option>
        <option value="Hex(1)HexNAc(3) (T)">Hex(1)HexNAc(3) (T)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(1) (S)">Hex(1)HexNAc(3)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(1) (T)">Hex(1)HexNAc(3)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(2) (S)">Hex(1)HexNAc(3)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(3)NeuAc(2) (T)">Hex(1)HexNAc(3)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(3)NeuGc(1) (S)">Hex(1)HexNAc(3)NeuGc(1) (S)</option>
        <option value="Hex(1)HexNAc(3)NeuGc(1) (T)">Hex(1)HexNAc(3)NeuGc(1) (T)</option>
        <option value="Hex(1)HexNAc(3)Sulf(1) (S)">Hex(1)HexNAc(3)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(3)Sulf(1) (T)">Hex(1)HexNAc(3)Sulf(1) (T)</option>
        <option value="Hex(1)HexNAc(4)dHex(1)Sulf(1) (S)">Hex(1)HexNAc(4)dHex(1)Sulf(1) (S)</option>
        <option value="Hex(1)HexNAc(4)dHex(1)Sulf(1) (T)">Hex(1)HexNAc(4)dHex(1)Sulf(1) (T)</option>
        <option value="Hex(1)NeuAc(1) (S)">Hex(1)NeuAc(1) (S)</option>
        <option value="Hex(1)NeuAc(1) (T)">Hex(1)NeuAc(1) (T)</option>
        <option value="Hex(1)NeuAc(1)Pent(1) (S)">Hex(1)NeuAc(1)Pent(1) (S)</option>
        <option value="Hex(1)NeuAc(1)Pent(1) (T)">Hex(1)NeuAc(1)Pent(1) (T)</option>
        <option value="Hex(1)NeuGc(1) (S)">Hex(1)NeuGc(1) (S)</option>
        <option value="Hex(1)NeuGc(1) (T)">Hex(1)NeuGc(1) (T)</option>
        <option value="Hex(1)Pent(1) (S)">Hex(1)Pent(1) (S)</option>
        <option value="Hex(1)Pent(1) (T)">Hex(1)Pent(1) (T)</option>
        <option value="Hex(1)Pent(2) (S)">Hex(1)Pent(2) (S)</option>
        <option value="Hex(1)Pent(2) (T)">Hex(1)Pent(2) (T)</option>
        <option value="Hex(1)Pent(2)Me(1) (S)">Hex(1)Pent(2)Me(1) (S)</option>
        <option value="Hex(1)Pent(2)Me(1) (T)">Hex(1)Pent(2)Me(1) (T)</option>
        <option value="Hex(1)Pent(3) (S)">Hex(1)Pent(3) (S)</option>
        <option value="Hex(1)Pent(3) (T)">Hex(1)Pent(3) (T)</option>
        <option value="Hex(1)Pent(3)Me(1) (S)">Hex(1)Pent(3)Me(1) (S)</option>
        <option value="Hex(1)Pent(3)Me(1) (T)">Hex(1)Pent(3)Me(1) (T)</option>
        <option value="Hex(10)HexNAc(1) (N)">Hex(10)HexNAc(1) (N)</option>
        <option value="Hex(10)Phos(3) (S)">Hex(10)Phos(3) (S)</option>
        <option value="Hex(10)Phos(3) (T)">Hex(10)Phos(3) (T)</option>
        <option value="Hex(2) (K)">Hex(2) (K)</option>
        <option value="Hex(2) (R)">Hex(2) (R)</option>
        <option value="Hex(2) (S)">Hex(2) (S)</option>
        <option value="Hex(2) (T)">Hex(2) (T)</option>
        <option value="Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)">Hex(2)HexA(1)HexNAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)">Hex(2)HexA(1)HexNAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (S)">Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (T)">Hex(2)HexA(1)NeuAc(1)Pent(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexA(1)Pent(1)Sulf(1) (S)">Hex(2)HexA(1)Pent(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexA(1)Pent(1)Sulf(1) (T)">Hex(2)HexA(1)Pent(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(1) (N)">Hex(2)HexNAc(1) (N)</option>
        <option value="Hex(2)HexNAc(1) (S)">Hex(2)HexNAc(1) (S)</option>
        <option value="Hex(2)HexNAc(1) (T)">Hex(2)HexNAc(1) (T)</option>
        <option value="Hex(2)HexNAc(1)Me(1) (S)">Hex(2)HexNAc(1)Me(1) (S)</option>
        <option value="Hex(2)HexNAc(1)Me(1) (T)">Hex(2)HexNAc(1)Me(1) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(1) (S)">Hex(2)HexNAc(1)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(1) (T)">Hex(2)HexNAc(1)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(2) (S)">Hex(2)HexNAc(1)NeuGc(2) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(2) (T)">Hex(2)HexNAc(1)NeuGc(2) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(3) (S)">Hex(2)HexNAc(1)NeuGc(3) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(3) (T)">Hex(2)HexNAc(1)NeuGc(3) (T)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(4) (S)">Hex(2)HexNAc(1)NeuGc(4) (S)</option>
        <option value="Hex(2)HexNAc(1)NeuGc(4) (T)">Hex(2)HexNAc(1)NeuGc(4) (T)</option>
        <option value="Hex(2)HexNAc(1)Pent(1)HexA(1) (S)">Hex(2)HexNAc(1)Pent(1)HexA(1) (S)</option>
        <option value="Hex(2)HexNAc(1)Pent(1)HexA(1) (T)">Hex(2)HexNAc(1)Pent(1)HexA(1) (T)</option>
        <option value="Hex(2)HexNAc(1)Sulf(1) (S)">Hex(2)HexNAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(1)Sulf(1) (T)">Hex(2)HexNAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(2) (N)">Hex(2)HexNAc(2) (N)</option>
        <option value="Hex(2)HexNAc(2) (S)">Hex(2)HexNAc(2) (S)</option>
        <option value="Hex(2)HexNAc(2) (T)">Hex(2)HexNAc(2) (T)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (N)">Hex(2)HexNAc(2)dHex(1) (N)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (S)">Hex(2)HexNAc(2)dHex(1) (S)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (T)">Hex(2)HexNAc(2)dHex(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1) (N)">Hex(2)HexNAc(2)NeuAc(1) (N)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1) (S)">Hex(2)HexNAc(2)NeuAc(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1) (T)">Hex(2)HexNAc(2)NeuAc(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)">Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)">Hex(2)HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2) (S)">Hex(2)HexNAc(2)NeuAc(2) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2) (T)">Hex(2)HexNAc(2)NeuAc(2) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)">Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)">Hex(2)HexNAc(2)NeuAc(2)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(2)NeuGc(1) (S)">Hex(2)HexNAc(2)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(2)NeuGc(1) (T)">Hex(2)HexNAc(2)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(2)Pent(1) (N)">Hex(2)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(2)HexNAc(2)Sulf(1) (S)">Hex(2)HexNAc(2)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(2)Sulf(1) (T)">Hex(2)HexNAc(2)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(3) (N)">Hex(2)HexNAc(3) (N)</option>
        <option value="Hex(2)HexNAc(3) (S)">Hex(2)HexNAc(3) (S)</option>
        <option value="Hex(2)HexNAc(3) (T)">Hex(2)HexNAc(3) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (S)">Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (T)">Hex(2)HexNAc(3)NeuAc(1)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (S)">Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (T)">Hex(2)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(2) (S)">Hex(2)HexNAc(3)NeuAc(2) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(2) (T)">Hex(2)HexNAc(3)NeuAc(2) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(3) (S)">Hex(2)HexNAc(3)NeuAc(3) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuAc(3) (T)">Hex(2)HexNAc(3)NeuAc(3) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(1) (S)">Hex(2)HexNAc(3)NeuGc(1) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(1) (T)">Hex(2)HexNAc(3)NeuGc(1) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(2) (S)">Hex(2)HexNAc(3)NeuGc(2) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(2) (T)">Hex(2)HexNAc(3)NeuGc(2) (T)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(3) (S)">Hex(2)HexNAc(3)NeuGc(3) (S)</option>
        <option value="Hex(2)HexNAc(3)NeuGc(3) (T)">Hex(2)HexNAc(3)NeuGc(3) (T)</option>
        <option value="Hex(2)HexNAc(3)Sulf(1) (S)">Hex(2)HexNAc(3)Sulf(1) (S)</option>
        <option value="Hex(2)HexNAc(3)Sulf(1) (T)">Hex(2)HexNAc(3)Sulf(1) (T)</option>
        <option value="Hex(2)HexNAc(4) (N)">Hex(2)HexNAc(4) (N)</option>
        <option value="Hex(2)HexNAc(4) (S)">Hex(2)HexNAc(4) (S)</option>
        <option value="Hex(2)HexNAc(4) (T)">Hex(2)HexNAc(4) (T)</option>
        <option value="Hex(2)HexNAc(4)NeuAc(1) (S)">Hex(2)HexNAc(4)NeuAc(1) (S)</option>
        <option value="Hex(2)HexNAc(4)NeuAc(1) (T)">Hex(2)HexNAc(4)NeuAc(1) (T)</option>
        <option value="Hex(2)HexNAc(5) (S)">Hex(2)HexNAc(5) (S)</option>
        <option value="Hex(2)HexNAc(5) (T)">Hex(2)HexNAc(5) (T)</option>
        <option value="Hex(2)NeuAc(1) (S)">Hex(2)NeuAc(1) (S)</option>
        <option value="Hex(2)NeuAc(1) (T)">Hex(2)NeuAc(1) (T)</option>
        <option value="Hex(2)Pent(2) (S)">Hex(2)Pent(2) (S)</option>
        <option value="Hex(2)Pent(2) (T)">Hex(2)Pent(2) (T)</option>
        <option value="Hex(2)Pent(2)Me(1) (S)">Hex(2)Pent(2)Me(1) (S)</option>
        <option value="Hex(2)Pent(2)Me(1) (T)">Hex(2)Pent(2)Me(1) (T)</option>
        <option value="Hex(2)Sulf(1) (S)">Hex(2)Sulf(1) (S)</option>
        <option value="Hex(2)Sulf(1) (T)">Hex(2)Sulf(1) (T)</option>
        <option value="Hex(3) (N)">Hex(3) (N)</option>
        <option value="Hex(3) (S)">Hex(3) (S)</option>
        <option value="Hex(3) (T)">Hex(3) (T)</option>
        <option value="Hex(3)HexNAc(1) (N)">Hex(3)HexNAc(1) (N)</option>
        <option value="Hex(3)HexNAc(1) (S)">Hex(3)HexNAc(1) (S)</option>
        <option value="Hex(3)HexNAc(1) (T)">Hex(3)HexNAc(1) (T)</option>
        <option value="Hex(3)HexNAc(1)HexA(1) (S)">Hex(3)HexNAc(1)HexA(1) (S)</option>
        <option value="Hex(3)HexNAc(1)HexA(1) (T)">Hex(3)HexNAc(1)HexA(1) (T)</option>
        <option value="Hex(3)HexNAc(1)Me(1) (S)">Hex(3)HexNAc(1)Me(1) (S)</option>
        <option value="Hex(3)HexNAc(1)Me(1) (T)">Hex(3)HexNAc(1)Me(1) (T)</option>
        <option value="Hex(3)HexNAc(1)Pent(1) (N)">Hex(3)HexNAc(1)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(2) (N)">Hex(3)HexNAc(2) (N)</option>
        <option value="Hex(3)HexNAc(2) (S)">Hex(3)HexNAc(2) (S)</option>
        <option value="Hex(3)HexNAc(2) (T)">Hex(3)HexNAc(2) (T)</option>
        <option value="Hex(3)HexNAc(2)NeuAc(1) (N)">Hex(3)HexNAc(2)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(2)NeuAc(2) (S)">Hex(3)HexNAc(2)NeuAc(2) (S)</option>
        <option value="Hex(3)HexNAc(2)NeuAc(2) (T)">Hex(3)HexNAc(2)NeuAc(2) (T)</option>
        <option value="Hex(3)HexNAc(2)Pent(1) (N)">Hex(3)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(2)Phos(1) (N)">Hex(3)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(3)HexNAc(3) (N)">Hex(3)HexNAc(3) (N)</option>
        <option value="Hex(3)HexNAc(3) (S)">Hex(3)HexNAc(3) (S)</option>
        <option value="Hex(3)HexNAc(3) (T)">Hex(3)HexNAc(3) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1) (S)">Hex(3)HexNAc(3)NeuAc(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1) (T)">Hex(3)HexNAc(3)NeuAc(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (S)">Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (T)">Hex(3)HexNAc(3)NeuAc(1)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2) (S)">Hex(3)HexNAc(3)NeuAc(2) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2) (T)">Hex(3)HexNAc(3)NeuAc(2) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (S)">Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (T)">Hex(3)HexNAc(3)NeuAc(2)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(3) (S)">Hex(3)HexNAc(3)NeuAc(3) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuAc(3) (T)">Hex(3)HexNAc(3)NeuAc(3) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1) (S)">Hex(3)HexNAc(3)NeuGc(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1) (T)">Hex(3)HexNAc(3)NeuGc(1) (T)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (S)">Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (T)">Hex(3)HexNAc(3)NeuGc(1)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(3)Pent(1) (N)">Hex(3)HexNAc(3)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(3)Sulf(1) (N)">Hex(3)HexNAc(3)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(3)Sulf(1) (S)">Hex(3)HexNAc(3)Sulf(1) (S)</option>
        <option value="Hex(3)HexNAc(3)Sulf(1) (T)">Hex(3)HexNAc(3)Sulf(1) (T)</option>
        <option value="Hex(3)HexNAc(4) (N)">Hex(3)HexNAc(4) (N)</option>
        <option value="Hex(3)HexNAc(4) (S)">Hex(3)HexNAc(4) (S)</option>
        <option value="Hex(3)HexNAc(4) (T)">Hex(3)HexNAc(4) (T)</option>
        <option value="Hex(3)HexNAc(4)NeuAc(1) (N)">Hex(3)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(4)NeuAc(2) (N)">Hex(3)HexNAc(4)NeuAc(2) (N)</option>
        <option value="Hex(3)HexNAc(4)Pent(1) (N)">Hex(3)HexNAc(4)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(4)Sulf(1) (N)">Hex(3)HexNAc(4)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(5) (N)">Hex(3)HexNAc(5) (N)</option>
        <option value="Hex(3)HexNAc(5) (S)">Hex(3)HexNAc(5) (S)</option>
        <option value="Hex(3)HexNAc(5) (T)">Hex(3)HexNAc(5) (T)</option>
        <option value="Hex(3)HexNAc(5)NeuAc(1) (N)">Hex(3)HexNAc(5)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(5)Sulf(1) (N)">Hex(3)HexNAc(5)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(6) (N)">Hex(3)HexNAc(6) (N)</option>
        <option value="Hex(3)HexNAc(6) (S)">Hex(3)HexNAc(6) (S)</option>
        <option value="Hex(3)HexNAc(6) (T)">Hex(3)HexNAc(6) (T)</option>
        <option value="Hex(3)HexNAc(6)NeuAc(1) (N)">Hex(3)HexNAc(6)NeuAc(1) (N)</option>
        <option value="Hex(3)HexNAc(6)Sulf(1) (N)">Hex(3)HexNAc(6)Sulf(1) (N)</option>
        <option value="Hex(3)HexNAc(6)Sulf(2) (N)">Hex(3)HexNAc(6)Sulf(2) (N)</option>
        <option value="Hex(3)HexNAc(7) (N)">Hex(3)HexNAc(7) (N)</option>
        <option value="Hex(3)HexNAc(7)Sulf(1) (N)">Hex(3)HexNAc(7)Sulf(1) (N)</option>
        <option value="Hex(4) (S)">Hex(4) (S)</option>
        <option value="Hex(4) (T)">Hex(4) (T)</option>
        <option value="Hex(4)HexA(1) (S)">Hex(4)HexA(1) (S)</option>
        <option value="Hex(4)HexA(1) (T)">Hex(4)HexA(1) (T)</option>
        <option value="Hex(4)HexA(1)HexNAc(1) (S)">Hex(4)HexA(1)HexNAc(1) (S)</option>
        <option value="Hex(4)HexA(1)HexNAc(1) (T)">Hex(4)HexA(1)HexNAc(1) (T)</option>
        <option value="Hex(4)HexNAc(1) (N)">Hex(4)HexNAc(1) (N)</option>
        <option value="Hex(4)HexNAc(1) (S)">Hex(4)HexNAc(1) (S)</option>
        <option value="Hex(4)HexNAc(1) (T)">Hex(4)HexNAc(1) (T)</option>
        <option value="Hex(4)HexNAc(2) (N)">Hex(4)HexNAc(2) (N)</option>
        <option value="Hex(4)HexNAc(2)NeuAc(1) (N)">Hex(4)HexNAc(2)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(2)NeuAc(1) (S)">Hex(4)HexNAc(2)NeuAc(1) (S)</option>
        <option value="Hex(4)HexNAc(2)NeuAc(1) (T)">Hex(4)HexNAc(2)NeuAc(1) (T)</option>
        <option value="Hex(4)HexNAc(2)Pent(1) (N)">Hex(4)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(3) (N)">Hex(4)HexNAc(3) (N)</option>
        <option value="Hex(4)HexNAc(3) (S)">Hex(4)HexNAc(3) (S)</option>
        <option value="Hex(4)HexNAc(3) (T)">Hex(4)HexNAc(3) (T)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(1) (N)">Hex(4)HexNAc(3)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(1) (S)">Hex(4)HexNAc(3)NeuAc(1) (S)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(1) (T)">Hex(4)HexNAc(3)NeuAc(1) (T)</option>
        <option value="Hex(4)HexNAc(3)NeuAc(2) (N)">Hex(4)HexNAc(3)NeuAc(2) (N)</option>
        <option value="Hex(4)HexNAc(3)NeuGc(1) (N)">Hex(4)HexNAc(3)NeuGc(1) (N)</option>
        <option value="Hex(4)HexNAc(3)Pent(1) (N)">Hex(4)HexNAc(3)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(4) (N)">Hex(4)HexNAc(4) (N)</option>
        <option value="Hex(4)HexNAc(4) (S)">Hex(4)HexNAc(4) (S)</option>
        <option value="Hex(4)HexNAc(4) (T)">Hex(4)HexNAc(4) (T)</option>
        <option value="Hex(4)HexNAc(4)Me(2)Pent(1) (N)">Hex(4)HexNAc(4)Me(2)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1) (N)">Hex(4)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1) (S)">Hex(4)HexNAc(4)NeuAc(1) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1) (T)">Hex(4)HexNAc(4)NeuAc(1) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (S)">Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (T)">Hex(4)HexNAc(4)NeuAc(1)Sulf(2) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (S)">Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (T)">Hex(4)HexNAc(4)NeuAc(1)Sulf(3) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1) (N)">Hex(4)HexNAc(4)NeuGc(1) (N)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1) (S)">Hex(4)HexNAc(4)NeuGc(1) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1) (T)">Hex(4)HexNAc(4)NeuGc(1) (T)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (S)">Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (S)</option>
        <option value="Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (T)">Hex(4)HexNAc(4)NeuGc(1)Sulf(2) (T)</option>
        <option value="Hex(4)HexNAc(4)Pent(1) (N)">Hex(4)HexNAc(4)Pent(1) (N)</option>
        <option value="Hex(4)HexNAc(4)Sulf(1) (N)">Hex(4)HexNAc(4)Sulf(1) (N)</option>
        <option value="Hex(4)HexNAc(4)Sulf(2) (S)">Hex(4)HexNAc(4)Sulf(2) (S)</option>
        <option value="Hex(4)HexNAc(4)Sulf(2) (T)">Hex(4)HexNAc(4)Sulf(2) (T)</option>
        <option value="Hex(4)HexNAc(5) (N)">Hex(4)HexNAc(5) (N)</option>
        <option value="Hex(4)HexNAc(5)NeuAc(1) (N)">Hex(4)HexNAc(5)NeuAc(1) (N)</option>
        <option value="Hex(4)HexNAc(5)Sulf(1) (N)">Hex(4)HexNAc(5)Sulf(1) (N)</option>
        <option value="Hex(4)HexNAc(6) (N)">Hex(4)HexNAc(6) (N)</option>
        <option value="Hex(4)Phos(1) (S)">Hex(4)Phos(1) (S)</option>
        <option value="Hex(4)Phos(1) (T)">Hex(4)Phos(1) (T)</option>
        <option value="Hex(5) (S)">Hex(5) (S)</option>
        <option value="Hex(5) (T)">Hex(5) (T)</option>
        <option value="Hex(5)HexA(1) (S)">Hex(5)HexA(1) (S)</option>
        <option value="Hex(5)HexA(1) (T)">Hex(5)HexA(1) (T)</option>
        <option value="Hex(5)HexNAc(1) (N)">Hex(5)HexNAc(1) (N)</option>
        <option value="Hex(5)HexNAc(1) (S)">Hex(5)HexNAc(1) (S)</option>
        <option value="Hex(5)HexNAc(1) (T)">Hex(5)HexNAc(1) (T)</option>
        <option value="Hex(5)HexNAc(2) (N)">Hex(5)HexNAc(2) (N)</option>
        <option value="Hex(5)HexNAc(2)Phos(1) (N)">Hex(5)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(5)HexNAc(3) (N)">Hex(5)HexNAc(3) (N)</option>
        <option value="Hex(5)HexNAc(3)Pent(1) (N)">Hex(5)HexNAc(3)Pent(1) (N)</option>
        <option value="Hex(5)HexNAc(4) (N)">Hex(5)HexNAc(4) (N)</option>
        <option value="Hex(5)HexNAc(4) (S)">Hex(5)HexNAc(4) (S)</option>
        <option value="Hex(5)HexNAc(4) (T)">Hex(5)HexNAc(4) (T)</option>
        <option value="Hex(5)HexNAc(4)Me(2)Pent(1) (N)">Hex(5)HexNAc(4)Me(2)Pent(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1) (N)">Hex(5)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1)Ac(1) (N)">Hex(5)HexNAc(4)NeuAc(1)Ac(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1)Ac(2) (N)">Hex(5)HexNAc(4)NeuAc(1)Ac(2) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1)Sulf(1) (N)">Hex(5)HexNAc(4)NeuAc(1)Sulf(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(2) (N)">Hex(5)HexNAc(4)NeuAc(2) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuGc(1) (N)">Hex(5)HexNAc(4)NeuGc(1) (N)</option>
        <option value="Hex(5)HexNAc(4)Sulf(1) (N)">Hex(5)HexNAc(4)Sulf(1) (N)</option>
        <option value="Hex(5)HexNAc(5) (N)">Hex(5)HexNAc(5) (N)</option>
        <option value="Hex(5)HexNAc(5) (S)">Hex(5)HexNAc(5) (S)</option>
        <option value="Hex(5)HexNAc(5) (T)">Hex(5)HexNAc(5) (T)</option>
        <option value="Hex(5)Phos(1) (S)">Hex(5)Phos(1) (S)</option>
        <option value="Hex(5)Phos(1) (T)">Hex(5)Phos(1) (T)</option>
        <option value="Hex(5)Phos(3) (S)">Hex(5)Phos(3) (S)</option>
        <option value="Hex(5)Phos(3) (T)">Hex(5)Phos(3) (T)</option>
        <option value="Hex(6)HexNAc(1) (N)">Hex(6)HexNAc(1) (N)</option>
        <option value="Hex(6)HexNAc(2) (N)">Hex(6)HexNAc(2) (N)</option>
        <option value="Hex(6)HexNAc(2)Phos(1) (N)">Hex(6)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(6)HexNAc(3) (N)">Hex(6)HexNAc(3) (N)</option>
        <option value="Hex(6)HexNAc(3)Phos(1) (N)">Hex(6)HexNAc(3)Phos(1) (N)</option>
        <option value="Hex(6)HexNAc(4) (N)">Hex(6)HexNAc(4) (N)</option>
        <option value="Hex(6)HexNAc(4) (S)">Hex(6)HexNAc(4) (S)</option>
        <option value="Hex(6)HexNAc(4) (T)">Hex(6)HexNAc(4) (T)</option>
        <option value="Hex(6)HexNAc(4)Me(3) (N)">Hex(6)HexNAc(4)Me(3) (N)</option>
        <option value="Hex(6)HexNAc(4)Me(3)Pent(1) (N)">Hex(6)HexNAc(4)Me(3)Pent(1) (N)</option>
        <option value="Hex(6)HexNAc(5) (N)">Hex(6)HexNAc(5) (N)</option>
        <option value="Hex(6)HexNAc(5)NeuAc(3) (N)">Hex(6)HexNAc(5)NeuAc(3) (N)</option>
        <option value="Hex(6)Phos(1) (S)">Hex(6)Phos(1) (S)</option>
        <option value="Hex(6)Phos(1) (T)">Hex(6)Phos(1) (T)</option>
        <option value="Hex(6)Phos(3) (S)">Hex(6)Phos(3) (S)</option>
        <option value="Hex(6)Phos(3) (T)">Hex(6)Phos(3) (T)</option>
        <option value="Hex(7)HexNAc(1) (N)">Hex(7)HexNAc(1) (N)</option>
        <option value="Hex(7)HexNAc(2) (N)">Hex(7)HexNAc(2) (N)</option>
        <option value="Hex(7)HexNAc(2)Phos(1) (N)">Hex(7)HexNAc(2)Phos(1) (N)</option>
        <option value="Hex(7)HexNAc(2)Phos(2) (N)">Hex(7)HexNAc(2)Phos(2) (N)</option>
        <option value="Hex(7)HexNAc(3) (N)">Hex(7)HexNAc(3) (N)</option>
        <option value="Hex(7)HexNAc(3)Phos(1) (N)">Hex(7)HexNAc(3)Phos(1) (N)</option>
        <option value="Hex(7)HexNAc(4) (N)">Hex(7)HexNAc(4) (N)</option>
        <option value="Hex(7)HexNAc(6) (N)">Hex(7)HexNAc(6) (N)</option>
        <option value="Hex(7)HexNAc(6) (S)">Hex(7)HexNAc(6) (S)</option>
        <option value="Hex(7)HexNAc(6) (T)">Hex(7)HexNAc(6) (T)</option>
        <option value="Hex(7)Phos(3) (S)">Hex(7)Phos(3) (S)</option>
        <option value="Hex(7)Phos(3) (T)">Hex(7)Phos(3) (T)</option>
        <option value="Hex(8)HexNAc(1) (N)">Hex(8)HexNAc(1) (N)</option>
        <option value="Hex(8)HexNAc(2) (N)">Hex(8)HexNAc(2) (N)</option>
        <option value="Hex(8)Phos(3) (S)">Hex(8)Phos(3) (S)</option>
        <option value="Hex(8)Phos(3) (T)">Hex(8)Phos(3) (T)</option>
        <option value="Hex(9) (N)">Hex(9) (N)</option>
        <option value="Hex(9)HexNAc(1) (N)">Hex(9)HexNAc(1) (N)</option>
        <option value="Hex(9)HexNAc(2) (N)">Hex(9)HexNAc(2) (N)</option>
        <option value="Hex(9)Phos(3) (S)">Hex(9)Phos(3) (S)</option>
        <option value="Hex(9)Phos(3) (T)">Hex(9)Phos(3) (T)</option>
        <option value="HexA(2)HexNAc(3) (S)">HexA(2)HexNAc(3) (S)</option>
        <option value="HexA(2)HexNAc(3) (T)">HexA(2)HexNAc(3) (T)</option>
        <option value="HexN (K)">HexN (K)</option>
        <option value="HexN (N)">HexN (N)</option>
        <option value="HexN (S)">HexN (S)</option>
        <option value="HexN (T)">HexN (T)</option>
        <option value="HexN (W)">HexN (W)</option>
        <option value="HexNAc (C)">HexNAc (C)</option>
        <option value="HexNAc (N)">HexNAc (N)</option>
        <option value="HexNAc (S)">HexNAc (S)</option>
        <option value="HexNAc (T)">HexNAc (T)</option>
        <option value="HexNAc(1)dHex(1) (N)">HexNAc(1)dHex(1) (N)</option>
        <option value="HexNAc(1)dHex(1) (S)">HexNAc(1)dHex(1) (S)</option>
        <option value="HexNAc(1)dHex(1) (T)">HexNAc(1)dHex(1) (T)</option>
        <option value="HexNAc(1)dHex(2) (N)">HexNAc(1)dHex(2) (N)</option>
        <option value="HexNAc(1)Kdn(2) (S)">HexNAc(1)Kdn(2) (S)</option>
        <option value="HexNAc(1)Kdn(2) (T)">HexNAc(1)Kdn(2) (T)</option>
        <option value="HexNAc(1)NeuAc(1) (S)">HexNAc(1)NeuAc(1) (S)</option>
        <option value="HexNAc(1)NeuAc(1) (T)">HexNAc(1)NeuAc(1) (T)</option>
        <option value="HexNAc(1)NeuGc(1) (S)">HexNAc(1)NeuGc(1) (S)</option>
        <option value="HexNAc(1)NeuGc(1) (T)">HexNAc(1)NeuGc(1) (T)</option>
        <option value="HexNAc(1)NeuGc(2) (S)">HexNAc(1)NeuGc(2) (S)</option>
        <option value="HexNAc(1)NeuGc(2) (T)">HexNAc(1)NeuGc(2) (T)</option>
        <option value="HexNAc(2) (N)">HexNAc(2) (N)</option>
        <option value="HexNAc(2) (S)">HexNAc(2) (S)</option>
        <option value="HexNAc(2) (T)">HexNAc(2) (T)</option>
        <option value="HexNAc(2)dHex(1) (N)">HexNAc(2)dHex(1) (N)</option>
        <option value="HexNAc(2)dHex(2) (N)">HexNAc(2)dHex(2) (N)</option>
        <option value="HexNAc(2)NeuAc(1) (S)">HexNAc(2)NeuAc(1) (S)</option>
        <option value="HexNAc(2)NeuAc(1) (T)">HexNAc(2)NeuAc(1) (T)</option>
        <option value="HexNAc(2)NeuAc(1)Sulf(1) (S)">HexNAc(2)NeuAc(1)Sulf(1) (S)</option>
        <option value="HexNAc(2)NeuAc(1)Sulf(1) (T)">HexNAc(2)NeuAc(1)Sulf(1) (T)</option>
        <option value="HexNAc(2)NeuGc(1) (S)">HexNAc(2)NeuGc(1) (S)</option>
        <option value="HexNAc(2)NeuGc(1) (T)">HexNAc(2)NeuGc(1) (T)</option>
        <option value="HexNAc(2)Sulf(1) (S)">HexNAc(2)Sulf(1) (S)</option>
        <option value="HexNAc(2)Sulf(1) (T)">HexNAc(2)Sulf(1) (T)</option>
        <option value="HexNAc(3) (S)">HexNAc(3) (S)</option>
        <option value="HexNAc(3) (T)">HexNAc(3) (T)</option>
        <option value="HexNAc(3)Sulf(1) (S)">HexNAc(3)Sulf(1) (S)</option>
        <option value="HexNAc(3)Sulf(1) (T)">HexNAc(3)Sulf(1) (T)</option>
        <option value="HexNAc(4) (S)">HexNAc(4) (S)</option>
        <option value="HexNAc(4) (T)">HexNAc(4) (T)</option>
        <option value="HexNAc(5) (S)">HexNAc(5) (S)</option>
        <option value="HexNAc(5) (T)">HexNAc(5) (T)</option>
        <option value="His+O(2) (H)">His+O(2) (H)</option>
        <option value="His-&gt;Ala (H)">His-&gt;Ala (H)</option>
        <option value="His-&gt;Arg (H)">His-&gt;Arg (H)</option>
        <option value="His-&gt;Asn (H)">His-&gt;Asn (H)</option>
        <option value="His-&gt;Asp (H)">His-&gt;Asp (H)</option>
        <option value="His-&gt;Cys (H)">His-&gt;Cys (H)</option>
        <option value="His-&gt;Gln (H)">His-&gt;Gln (H)</option>
        <option value="His-&gt;Glu (H)">His-&gt;Glu (H)</option>
        <option value="His-&gt;Gly (H)">His-&gt;Gly (H)</option>
        <option value="His-&gt;Lys (H)">His-&gt;Lys (H)</option>
        <option value="His-&gt;Met (H)">His-&gt;Met (H)</option>
        <option value="His-&gt;Phe (H)">His-&gt;Phe (H)</option>
        <option value="His-&gt;Pro (H)">His-&gt;Pro (H)</option>
        <option value="His-&gt;Ser (H)">His-&gt;Ser (H)</option>
        <option value="His-&gt;Thr (H)">His-&gt;Thr (H)</option>
        <option value="His-&gt;Trp (H)">His-&gt;Trp (H)</option>
        <option value="His-&gt;Tyr (H)">His-&gt;Tyr (H)</option>
        <option value="His-&gt;Val (H)">His-&gt;Val (H)</option>
        <option value="His-&gt;Xle (H)">His-&gt;Xle (H)</option>
        <option value="HMVK (C)">HMVK (C)</option>
        <option value="HN2_mustard (C)">HN2_mustard (C)</option>
        <option value="HN2_mustard (H)">HN2_mustard (H)</option>
        <option value="HN2_mustard (K)">HN2_mustard (K)</option>
        <option value="HN3_mustard (C)">HN3_mustard (C)</option>
        <option value="HN3_mustard (H)">HN3_mustard (H)</option>
        <option value="HN3_mustard (K)">HN3_mustard (K)</option>
        <option value="HNE (A)">HNE (A)</option>
        <option value="HNE (C)">HNE (C)</option>
        <option value="HNE (H)">HNE (H)</option>
        <option value="HNE (K)">HNE (K)</option>
        <option value="HNE (L)">HNE (L)</option>
        <option value="HNE+Delta:H(2) (C)">HNE+Delta:H(2) (C)</option>
        <option value="HNE+Delta:H(2) (H)">HNE+Delta:H(2) (H)</option>
        <option value="HNE+Delta:H(2) (K)">HNE+Delta:H(2) (K)</option>
        <option value="HNE-BAHAH (C)">HNE-BAHAH (C)</option>
        <option value="HNE-BAHAH (H)">HNE-BAHAH (H)</option>
        <option value="HNE-BAHAH (K)">HNE-BAHAH (K)</option>
        <option value="HNE-Delta:H(2)O (C)">HNE-Delta:H(2)O (C)</option>
        <option value="HNE-Delta:H(2)O (H)">HNE-Delta:H(2)O (H)</option>
        <option value="HNE-Delta:H(2)O (K)">HNE-Delta:H(2)O (K)</option>
        <option value="Homocysteic_acid (M)">Homocysteic_acid (M)</option>
        <option value="HPG (R)">HPG (R)</option>
        <option value="Hydroxamic_acid (D)">Hydroxamic_acid (D)</option>
        <option value="Hydroxamic_acid (E)">Hydroxamic_acid (E)</option>
        <option value="Hydroxycinnamyl (C)">Hydroxycinnamyl (C)</option>
        <option value="Hydroxyfarnesyl (C)">Hydroxyfarnesyl (C)</option>
        <option value="Hydroxyheme (E)">Hydroxyheme (E)</option>
        <option value="hydroxyisobutyryl (K)">hydroxyisobutyryl (K)</option>
        <option value="Hydroxymethyl (N)">Hydroxymethyl (N)</option>
        <option value="HydroxymethylOP (K)">HydroxymethylOP (K)</option>
        <option value="Hydroxytrimethyl (K)">Hydroxytrimethyl (K)</option>
        <option value="Hypusine (K)">Hypusine (K)</option>
        <option value="IASD (C)">IASD (C)</option>
        <option value="IBTP (C)">IBTP (C)</option>
        <option value="ICAT-C (C)">ICAT-C (C)</option>
        <option value="ICAT-C:13C(9) (C)">ICAT-C:13C(9) (C)</option>
        <option value="ICAT-D (C)">ICAT-D (C)</option>
        <option value="ICAT-D:2H(8) (C)">ICAT-D:2H(8) (C)</option>
        <option value="ICAT-G (C)">ICAT-G (C)</option>
        <option value="ICAT-G:2H(8) (C)">ICAT-G:2H(8) (C)</option>
        <option value="ICAT-H (C)">ICAT-H (C)</option>
        <option value="ICAT-H:13C(6) (C)">ICAT-H:13C(6) (C)</option>
        <option value="ICDID (C)">ICDID (C)</option>
        <option value="ICDID:2H(6) (C)">ICDID:2H(6) (C)</option>
        <option value="ICPL (K)">ICPL (K)</option>
        <option value="ICPL (N-term)">ICPL (N-term)</option>
        <option value="ICPL (Protein N-term)">ICPL (Protein N-term)</option>
        <option value="ICPL:13C(6) (K)">ICPL:13C(6) (K)</option>
        <option value="ICPL:13C(6) (N-term)">ICPL:13C(6) (N-term)</option>
        <option value="ICPL:13C(6) (Protein N-term)">ICPL:13C(6) (Protein N-term)</option>
        <option value="ICPL:13C(6)2H(4) (K)">ICPL:13C(6)2H(4) (K)</option>
        <option value="ICPL:13C(6)2H(4) (N-term)">ICPL:13C(6)2H(4) (N-term)</option>
        <option value="ICPL:13C(6)2H(4) (Protein N-term)">ICPL:13C(6)2H(4) (Protein N-term)</option>
        <option value="ICPL:2H(4) (K)">ICPL:2H(4) (K)</option>
        <option value="ICPL:2H(4) (N-term)">ICPL:2H(4) (N-term)</option>
        <option value="ICPL:2H(4) (Protein N-term)">ICPL:2H(4) (Protein N-term)</option>
        <option value="IDEnT (C)">IDEnT (C)</option>
        <option value="IED-Biotin (C)">IED-Biotin (C)</option>
        <option value="IGBP (C)">IGBP (C)</option>
        <option value="IGBP:13C(2) (C)">IGBP:13C(2) (C)</option>
        <option value="IMEHex(2)NeuAc(1) (K)">IMEHex(2)NeuAc(1) (K)</option>
        <option value="IMID (K)">IMID (K)</option>
        <option value="IMID:2H(4) (K)">IMID:2H(4) (K)</option>
        <option value="Iminobiotin (K)">Iminobiotin (K)</option>
        <option value="Iminobiotin (N-term)">Iminobiotin (N-term)</option>
        <option value="Iodo (H)">Iodo (H)</option>
        <option value="Iodo (Y)">Iodo (Y)</option>
        <option value="Iodoacetanilide (C)">Iodoacetanilide (C)</option>
        <option value="Iodoacetanilide (K)">Iodoacetanilide (K)</option>
        <option value="Iodoacetanilide (N-term)">Iodoacetanilide (N-term)</option>
        <option value="Iodoacetanilide:13C(6) (C)">Iodoacetanilide:13C(6) (C)</option>
        <option value="Iodoacetanilide:13C(6) (K)">Iodoacetanilide:13C(6) (K)</option>
        <option value="Iodoacetanilide:13C(6) (N-term)">Iodoacetanilide:13C(6) (N-term)</option>
        <option value="iodoTMT (C)">iodoTMT (C)</option>
        <option value="iodoTMT (D)">iodoTMT (D)</option>
        <option value="iodoTMT (E)">iodoTMT (E)</option>
        <option value="iodoTMT (H)">iodoTMT (H)</option>
        <option value="iodoTMT (K)">iodoTMT (K)</option>
        <option value="iodoTMT6plex (C)">iodoTMT6plex (C)</option>
        <option value="iodoTMT6plex (D)">iodoTMT6plex (D)</option>
        <option value="iodoTMT6plex (E)">iodoTMT6plex (E)</option>
        <option value="iodoTMT6plex (H)">iodoTMT6plex (H)</option>
        <option value="iodoTMT6plex (K)">iodoTMT6plex (K)</option>
        <option value="IodoU-AMP (F)">IodoU-AMP (F)</option>
        <option value="IodoU-AMP (W)">IodoU-AMP (W)</option>
        <option value="IodoU-AMP (Y)">IodoU-AMP (Y)</option>
        <option value="ISD_z+2_ion (N-term)">ISD_z+2_ion (N-term)</option>
        <option value="Isopropylphospho (S)">Isopropylphospho (S)</option>
        <option value="Isopropylphospho (T)">Isopropylphospho (T)</option>
        <option value="Isopropylphospho (Y)">Isopropylphospho (Y)</option>
        <option value="iTRAQ4plex (C)">iTRAQ4plex (C)</option>
        <option value="iTRAQ4plex (H)">iTRAQ4plex (H)</option>
        <option value="iTRAQ4plex (K)">iTRAQ4plex (K)</option>
        <option value="iTRAQ4plex (N-term)">iTRAQ4plex (N-term)</option>
        <option value="iTRAQ4plex (Protein N-term)">iTRAQ4plex (Protein N-term)</option>
        <option value="iTRAQ4plex (S)">iTRAQ4plex (S)</option>
        <option value="iTRAQ4plex (T)">iTRAQ4plex (T)</option>
        <option value="iTRAQ4plex (Y)">iTRAQ4plex (Y)</option>
        <option value="iTRAQ4plex114 (C)">iTRAQ4plex114 (C)</option>
        <option value="iTRAQ4plex114 (K)">iTRAQ4plex114 (K)</option>
        <option value="iTRAQ4plex114 (N-term)">iTRAQ4plex114 (N-term)</option>
        <option value="iTRAQ4plex114 (Y)">iTRAQ4plex114 (Y)</option>
        <option value="iTRAQ4plex115 (C)">iTRAQ4plex115 (C)</option>
        <option value="iTRAQ4plex115 (K)">iTRAQ4plex115 (K)</option>
        <option value="iTRAQ4plex115 (N-term)">iTRAQ4plex115 (N-term)</option>
        <option value="iTRAQ4plex115 (Y)">iTRAQ4plex115 (Y)</option>
        <option value="iTRAQ8plex (C)">iTRAQ8plex (C)</option>
        <option value="iTRAQ8plex (H)">iTRAQ8plex (H)</option>
        <option value="iTRAQ8plex (K)">iTRAQ8plex (K)</option>
        <option value="iTRAQ8plex (N-term)">iTRAQ8plex (N-term)</option>
        <option value="iTRAQ8plex (Protein N-term)">iTRAQ8plex (Protein N-term)</option>
        <option value="iTRAQ8plex (S)">iTRAQ8plex (S)</option>
        <option value="iTRAQ8plex (T)">iTRAQ8plex (T)</option>
        <option value="iTRAQ8plex (Y)">iTRAQ8plex (Y)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (C)">iTRAQ8plex:13C(6)15N(2) (C)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (K)">iTRAQ8plex:13C(6)15N(2) (K)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (N-term)">iTRAQ8plex:13C(6)15N(2) (N-term)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (Y)">iTRAQ8plex:13C(6)15N(2) (Y)</option>
        <option value="Kdo (S)">Kdo (S)</option>
        <option value="Kdo (T)">Kdo (T)</option>
        <option value="Label:13C(1)2H(3) (M)">Label:13C(1)2H(3) (M)</option>
        <option value="Label:13C(1)2H(3)+Oxidation (M)">Label:13C(1)2H(3)+Oxidation (M)</option>
        <option value="Label:13C(2)15N(2) (K)">Label:13C(2)15N(2) (K)</option>
        <option value="Label:13C(3) (A)">Label:13C(3) (A)</option>
        <option value="Label:13C(3)15N(1) (A)">Label:13C(3)15N(1) (A)</option>
        <option value="Label:13C(3)15N(1) (S)">Label:13C(3)15N(1) (S)</option>
        <option value="Label:13C(4) (M)">Label:13C(4) (M)</option>
        <option value="Label:13C(4)+Oxidation (M)">Label:13C(4)+Oxidation (M)</option>
        <option value="Label:13C(4)15N(1) (D)">Label:13C(4)15N(1) (D)</option>
        <option value="Label:13C(4)15N(2)+GG (K)">Label:13C(4)15N(2)+GG (K)</option>
        <option value="Label:13C(5) (P)">Label:13C(5) (P)</option>
        <option value="Label:13C(5)15N(1) (E)">Label:13C(5)15N(1) (E)</option>
        <option value="Label:13C(5)15N(1) (M)">Label:13C(5)15N(1) (M)</option>
        <option value="Label:13C(5)15N(1) (P)">Label:13C(5)15N(1) (P)</option>
        <option value="Label:13C(5)15N(1) (V)">Label:13C(5)15N(1) (V)</option>
        <option value="Label:13C(6) (I)">Label:13C(6) (I)</option>
        <option value="Label:13C(6) (K)">Label:13C(6) (K)</option>
        <option value="Label:13C(6) (L)">Label:13C(6) (L)</option>
        <option value="Label:13C(6) (R)">Label:13C(6) (R)</option>
        <option value="Label:13C(6)+Acetyl (K)">Label:13C(6)+Acetyl (K)</option>
        <option value="Label:13C(6)+Dimethyl (K)">Label:13C(6)+Dimethyl (K)</option>
        <option value="Label:13C(6)+GG (K)">Label:13C(6)+GG (K)</option>
        <option value="Label:13C(6)15N(1) (I)">Label:13C(6)15N(1) (I)</option>
        <option value="Label:13C(6)15N(1) (L)">Label:13C(6)15N(1) (L)</option>
        <option value="Label:13C(6)15N(2) (K)">Label:13C(6)15N(2) (K)</option>
        <option value="Label:13C(6)15N(2)+Acetyl (K)">Label:13C(6)15N(2)+Acetyl (K)</option>
        <option value="Label:13C(6)15N(2)+Dimethyl (K)">Label:13C(6)15N(2)+Dimethyl (K)</option>
        <option value="Label:13C(6)15N(2)+GG (K)">Label:13C(6)15N(2)+GG (K)</option>
        <option value="Label:13C(6)15N(4) (R)">Label:13C(6)15N(4) (R)</option>
        <option value="Label:13C(6)15N(4)+Dimethyl (R)">Label:13C(6)15N(4)+Dimethyl (R)</option>
        <option value="Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2) (R)">Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2) (R)</option>
        <option value="Label:13C(6)15N(4)+Methyl (R)">Label:13C(6)15N(4)+Methyl (R)</option>
        <option value="Label:13C(6)15N(4)+Methyl:2H(3)13C(1) (R)">Label:13C(6)15N(4)+Methyl:2H(3)13C(1) (R)</option>
        <option value="Label:13C(9) (F)">Label:13C(9) (F)</option>
        <option value="Label:13C(9) (Y)">Label:13C(9) (Y)</option>
        <option value="Label:13C(9)+Phospho (Y)">Label:13C(9)+Phospho (Y)</option>
        <option value="Label:13C(9)15N(1) (F)">Label:13C(9)15N(1) (F)</option>
        <option value="Label:15N(1) (A)">Label:15N(1) (A)</option>
        <option value="Label:15N(1) (C)">Label:15N(1) (C)</option>
        <option value="Label:15N(1) (D)">Label:15N(1) (D)</option>
        <option value="Label:15N(1) (E)">Label:15N(1) (E)</option>
        <option value="Label:15N(1) (F)">Label:15N(1) (F)</option>
        <option value="Label:15N(1) (G)">Label:15N(1) (G)</option>
        <option value="Label:15N(1) (I)">Label:15N(1) (I)</option>
        <option value="Label:15N(1) (L)">Label:15N(1) (L)</option>
        <option value="Label:15N(1) (M)">Label:15N(1) (M)</option>
        <option value="Label:15N(1) (P)">Label:15N(1) (P)</option>
        <option value="Label:15N(1) (S)">Label:15N(1) (S)</option>
        <option value="Label:15N(1) (T)">Label:15N(1) (T)</option>
        <option value="Label:15N(1) (V)">Label:15N(1) (V)</option>
        <option value="Label:15N(1) (Y)">Label:15N(1) (Y)</option>
        <option value="Label:15N(2) (K)">Label:15N(2) (K)</option>
        <option value="Label:15N(2) (N)">Label:15N(2) (N)</option>
        <option value="Label:15N(2) (Q)">Label:15N(2) (Q)</option>
        <option value="Label:15N(2) (W)">Label:15N(2) (W)</option>
        <option value="Label:15N(2)2H(9) (K)">Label:15N(2)2H(9) (K)</option>
        <option value="Label:15N(3) (H)">Label:15N(3) (H)</option>
        <option value="Label:15N(4) (R)">Label:15N(4) (R)</option>
        <option value="Label:18O(1) (C-term)">Label:18O(1) (C-term)</option>
        <option value="Label:18O(1) (S)">Label:18O(1) (S)</option>
        <option value="Label:18O(1) (T)">Label:18O(1) (T)</option>
        <option value="Label:18O(1) (Y)">Label:18O(1) (Y)</option>
        <option value="Label:18O(2) (C-term)">Label:18O(2) (C-term)</option>
        <option value="Label:2H(10) (L)">Label:2H(10) (L)</option>
        <option value="Label:2H(3) (L)">Label:2H(3) (L)</option>
        <option value="Label:2H(3) (M)">Label:2H(3) (M)</option>
        <option value="Label:2H(3)+Oxidation (M)">Label:2H(3)+Oxidation (M)</option>
        <option value="Label:2H(4) (A)">Label:2H(4) (A)</option>
        <option value="Label:2H(4) (F)">Label:2H(4) (F)</option>
        <option value="Label:2H(4) (K)">Label:2H(4) (K)</option>
        <option value="Label:2H(4) (U)">Label:2H(4) (U)</option>
        <option value="Label:2H(4) (Y)">Label:2H(4) (Y)</option>
        <option value="Label:2H(4)+Acetyl (K)">Label:2H(4)+Acetyl (K)</option>
        <option value="Label:2H(4)+GG (K)">Label:2H(4)+GG (K)</option>
        <option value="Label:2H(4)13C(1) (R)">Label:2H(4)13C(1) (R)</option>
        <option value="Label:2H(6)15N(1) (P)">Label:2H(6)15N(1) (P)</option>
        <option value="Label:2H(7)15N(4) (R)">Label:2H(7)15N(4) (R)</option>
        <option value="Label:2H(9)13C(6)15N(2) (K)">Label:2H(9)13C(6)15N(2) (K)</option>
        <option value="lapachenole (C)">lapachenole (C)</option>
        <option value="Leu-&gt;MetOx (L)">Leu-&gt;MetOx (L)</option>
        <option value="LG-anhydrolactam (K)">LG-anhydrolactam (K)</option>
        <option value="LG-anhydrolactam (N-term)">LG-anhydrolactam (N-term)</option>
        <option value="LG-anhyropyrrole (K)">LG-anhyropyrrole (K)</option>
        <option value="LG-anhyropyrrole (N-term)">LG-anhyropyrrole (N-term)</option>
        <option value="LG-Hlactam-K (K)">LG-Hlactam-K (K)</option>
        <option value="LG-Hlactam-K (Protein N-term)">LG-Hlactam-K (Protein N-term)</option>
        <option value="LG-Hlactam-R (R)">LG-Hlactam-R (R)</option>
        <option value="LG-lactam-K (K)">LG-lactam-K (K)</option>
        <option value="LG-lactam-K (Protein N-term)">LG-lactam-K (Protein N-term)</option>
        <option value="LG-lactam-R (R)">LG-lactam-R (R)</option>
        <option value="LG-pyrrole (C)">LG-pyrrole (C)</option>
        <option value="LG-pyrrole (K)">LG-pyrrole (K)</option>
        <option value="LG-pyrrole (N-term)">LG-pyrrole (N-term)</option>
        <option value="Lipoyl (K)">Lipoyl (K)</option>
        <option value="LRGG (K)">LRGG (K)</option>
        <option value="LRGG+dimethyl (K)">LRGG+dimethyl (K)</option>
        <option value="LRGG+methyl (K)">LRGG+methyl (K)</option>
        <option value="LTX+Lophotoxin (Y)">LTX+Lophotoxin (Y)</option>
        <option value="Lys (N-term)">Lys (N-term)</option>
        <option value="Lys+O(2) (H)">Lys+O(2) (H)</option>
        <option value="Lys-&gt;Ala (K)">Lys-&gt;Ala (K)</option>
        <option value="Lys-&gt;Allysine (K)">Lys-&gt;Allysine (K)</option>
        <option value="Lys-&gt;AminoadipicAcid (K)">Lys-&gt;AminoadipicAcid (K)</option>
        <option value="Lys-&gt;Arg (K)">Lys-&gt;Arg (K)</option>
        <option value="Lys-&gt;Asn (K)">Lys-&gt;Asn (K)</option>
        <option value="Lys-&gt;Asp (K)">Lys-&gt;Asp (K)</option>
        <option value="Lys-&gt;CamCys (K)">Lys-&gt;CamCys (K)</option>
        <option value="Lys-&gt;Cys (K)">Lys-&gt;Cys (K)</option>
        <option value="Lys-&gt;Gln (K)">Lys-&gt;Gln (K)</option>
        <option value="Lys-&gt;Glu (K)">Lys-&gt;Glu (K)</option>
        <option value="Lys-&gt;Gly (K)">Lys-&gt;Gly (K)</option>
        <option value="Lys-&gt;His (K)">Lys-&gt;His (K)</option>
        <option value="Lys-&gt;Met (K)">Lys-&gt;Met (K)</option>
        <option value="Lys-&gt;MetOx (K)">Lys-&gt;MetOx (K)</option>
        <option value="Lys-&gt;Phe (K)">Lys-&gt;Phe (K)</option>
        <option value="Lys-&gt;Pro (K)">Lys-&gt;Pro (K)</option>
        <option value="Lys-&gt;Ser (K)">Lys-&gt;Ser (K)</option>
        <option value="Lys-&gt;Thr (K)">Lys-&gt;Thr (K)</option>
        <option value="Lys-&gt;Trp (K)">Lys-&gt;Trp (K)</option>
        <option value="Lys-&gt;Tyr (K)">Lys-&gt;Tyr (K)</option>
        <option value="Lys-&gt;Val (K)">Lys-&gt;Val (K)</option>
        <option value="Lys-&gt;Xle (K)">Lys-&gt;Xle (K)</option>
        <option value="Lys-loss (Protein C-term K)">Lys-loss (Protein C-term K)</option>
        <option value="Lysbiotinhydrazide (K)">Lysbiotinhydrazide (K)</option>
        <option value="maleimide (C)">maleimide (C)</option>
        <option value="maleimide (K)">maleimide (K)</option>
        <option value="Maleimide-PEO2-Biotin (C)">Maleimide-PEO2-Biotin (C)</option>
        <option value="maleimide3 (C)">maleimide3 (C)</option>
        <option value="maleimide3 (K)">maleimide3 (K)</option>
        <option value="maleimide5 (C)">maleimide5 (C)</option>
        <option value="maleimide5 (K)">maleimide5 (K)</option>
        <option value="Malonyl (C)">Malonyl (C)</option>
        <option value="Malonyl (K)">Malonyl (K)</option>
        <option value="Malonyl (S)">Malonyl (S)</option>
        <option value="MBS+peptide (C)">MBS+peptide (C)</option>
        <option value="MDCC (C)">MDCC (C)</option>
        <option value="MeMePhosphorothioate (S)">MeMePhosphorothioate (S)</option>
        <option value="Menadione (C)">Menadione (C)</option>
        <option value="Menadione (K)">Menadione (K)</option>
        <option value="Menadione-HQ (C)">Menadione-HQ (C)</option>
        <option value="Menadione-HQ (K)">Menadione-HQ (K)</option>
        <option value="MercaptoEthanol (S)">MercaptoEthanol (S)</option>
        <option value="MercaptoEthanol (T)">MercaptoEthanol (T)</option>
        <option value="MesitylOxide (H)">MesitylOxide (H)</option>
        <option value="MesitylOxide (K)">MesitylOxide (K)</option>
        <option value="MesitylOxide (Protein N-term)">MesitylOxide (Protein N-term)</option>
        <option value="Met+O(2) (H)">Met+O(2) (H)</option>
        <option value="Met-&gt;Aha (M)">Met-&gt;Aha (M)</option>
        <option value="Met-&gt;Ala (M)">Met-&gt;Ala (M)</option>
        <option value="Met-&gt;Arg (M)">Met-&gt;Arg (M)</option>
        <option value="Met-&gt;Asn (M)">Met-&gt;Asn (M)</option>
        <option value="Met-&gt;Asp (M)">Met-&gt;Asp (M)</option>
        <option value="Met-&gt;AspSA (M)">Met-&gt;AspSA (M)</option>
        <option value="Met-&gt;Cys (M)">Met-&gt;Cys (M)</option>
        <option value="Met-&gt;Gln (M)">Met-&gt;Gln (M)</option>
        <option value="Met-&gt;Glu (M)">Met-&gt;Glu (M)</option>
        <option value="Met-&gt;Gly (M)">Met-&gt;Gly (M)</option>
        <option value="Met-&gt;His (M)">Met-&gt;His (M)</option>
        <option value="Met-&gt;Hpg (M)">Met-&gt;Hpg (M)</option>
        <option value="Met-&gt;Hse (C-term M)">Met-&gt;Hse (C-term M)</option>
        <option value="Met-&gt;Hsl (C-term M)">Met-&gt;Hsl (C-term M)</option>
        <option value="Met-&gt;Lys (M)">Met-&gt;Lys (M)</option>
        <option value="Met-&gt;Phe (M)">Met-&gt;Phe (M)</option>
        <option value="Met-&gt;Pro (M)">Met-&gt;Pro (M)</option>
        <option value="Met-&gt;Ser (M)">Met-&gt;Ser (M)</option>
        <option value="Met-&gt;Thr (M)">Met-&gt;Thr (M)</option>
        <option value="Met-&gt;Trp (M)">Met-&gt;Trp (M)</option>
        <option value="Met-&gt;Tyr (M)">Met-&gt;Tyr (M)</option>
        <option value="Met-&gt;Val (M)">Met-&gt;Val (M)</option>
        <option value="Met-&gt;Xle (M)">Met-&gt;Xle (M)</option>
        <option value="Met-loss (Protein N-term M)">Met-loss (Protein N-term M)</option>
        <option value="Met-loss+Acetyl (Protein N-term M)">Met-loss+Acetyl (Protein N-term M)</option>
        <option value="Methamidophos-O (C)">Methamidophos-O (C)</option>
        <option value="Methamidophos-O (H)">Methamidophos-O (H)</option>
        <option value="Methamidophos-O (K)">Methamidophos-O (K)</option>
        <option value="Methamidophos-O (S)">Methamidophos-O (S)</option>
        <option value="Methamidophos-O (T)">Methamidophos-O (T)</option>
        <option value="Methamidophos-O (Y)">Methamidophos-O (Y)</option>
        <option value="Methamidophos-S (C)">Methamidophos-S (C)</option>
        <option value="Methamidophos-S (H)">Methamidophos-S (H)</option>
        <option value="Methamidophos-S (K)">Methamidophos-S (K)</option>
        <option value="Methamidophos-S (S)">Methamidophos-S (S)</option>
        <option value="Methamidophos-S (T)">Methamidophos-S (T)</option>
        <option value="Methamidophos-S (Y)">Methamidophos-S (Y)</option>
        <option value="Methyl (C)">Methyl (C)</option>
        <option value="Methyl (C-term)">Methyl (C-term)</option>
        <option value="Methyl (D)">Methyl (D)</option>
        <option value="Methyl (E)">Methyl (E)</option>
        <option value="Methyl (H)">Methyl (H)</option>
        <option value="Methyl (I)">Methyl (I)</option>
        <option value="Methyl (K)">Methyl (K)</option>
        <option value="Methyl (L)">Methyl (L)</option>
        <option value="Methyl (N)">Methyl (N)</option>
        <option value="Methyl (N-term)">Methyl (N-term)</option>
        <option value="Methyl (Protein N-term)">Methyl (Protein N-term)</option>
        <option value="Methyl (Q)">Methyl (Q)</option>
        <option value="Methyl (R)">Methyl (R)</option>
        <option value="Methyl (S)">Methyl (S)</option>
        <option value="Methyl (T)">Methyl (T)</option>
        <option value="Methyl+Acetyl:2H(3) (K)">Methyl+Acetyl:2H(3) (K)</option>
        <option value="Methyl+Deamidated (N)">Methyl+Deamidated (N)</option>
        <option value="Methyl+Deamidated (Q)">Methyl+Deamidated (Q)</option>
        <option value="Methyl-PEO12-Maleimide (C)">Methyl-PEO12-Maleimide (C)</option>
        <option value="Methyl:2H(2) (K)">Methyl:2H(2) (K)</option>
        <option value="Methyl:2H(2) (N-term)">Methyl:2H(2) (N-term)</option>
        <option value="Methyl:2H(2)13C (C)">Methyl:2H(2)13C (C)</option>
        <option value="Methyl:2H(2)13C (C-term)">Methyl:2H(2)13C (C-term)</option>
        <option value="Methyl:2H(2)13C (D)">Methyl:2H(2)13C (D)</option>
        <option value="Methyl:2H(2)13C (E)">Methyl:2H(2)13C (E)</option>
        <option value="Methyl:2H(2)13C (H)">Methyl:2H(2)13C (H)</option>
        <option value="Methyl:2H(2)13C (I)">Methyl:2H(2)13C (I)</option>
        <option value="Methyl:2H(2)13C (K)">Methyl:2H(2)13C (K)</option>
        <option value="Methyl:2H(2)13C (L)">Methyl:2H(2)13C (L)</option>
        <option value="Methyl:2H(2)13C (N)">Methyl:2H(2)13C (N)</option>
        <option value="Methyl:2H(2)13C (N-term)">Methyl:2H(2)13C (N-term)</option>
        <option value="Methyl:2H(2)13C (Protein N-term)">Methyl:2H(2)13C (Protein N-term)</option>
        <option value="Methyl:2H(2)13C (Q)">Methyl:2H(2)13C (Q)</option>
        <option value="Methyl:2H(2)13C (R)">Methyl:2H(2)13C (R)</option>
        <option value="Methyl:2H(2)13C (S)">Methyl:2H(2)13C (S)</option>
        <option value="Methyl:2H(2)13C (T)">Methyl:2H(2)13C (T)</option>
        <option value="Methyl:2H(3) (D)">Methyl:2H(3) (D)</option>
        <option value="Methyl:2H(3) (E)">Methyl:2H(3) (E)</option>
        <option value="Methyl:2H(3) (K)">Methyl:2H(3) (K)</option>
        <option value="Methyl:2H(3) (R)">Methyl:2H(3) (R)</option>
        <option value="Methyl:2H(3) (X)">Methyl:2H(3) (X)</option>
        <option value="Methyl:2H(3)+Acetyl:2H(3) (K)">Methyl:2H(3)+Acetyl:2H(3) (K)</option>
        <option value="Methyl:2H(3)13C(1) (K)">Methyl:2H(3)13C(1) (K)</option>
        <option value="Methyl:2H(3)13C(1) (N-term)">Methyl:2H(3)13C(1) (N-term)</option>
        <option value="Methyl:2H(3)13C(1) (R)">Methyl:2H(3)13C(1) (R)</option>
        <option value="Methylamine (S)">Methylamine (S)</option>
        <option value="Methylamine (T)">Methylamine (T)</option>
        <option value="Methylmalonylation (S)">Methylmalonylation (S)</option>
        <option value="methylol (K)">methylol (K)</option>
        <option value="methylol (W)">methylol (W)</option>
        <option value="methylol (Y)">methylol (Y)</option>
        <option value="Methylphosphonate (S)">Methylphosphonate (S)</option>
        <option value="Methylphosphonate (T)">Methylphosphonate (T)</option>
        <option value="Methylphosphonate (Y)">Methylphosphonate (Y)</option>
        <option value="Methylpyrroline (K)">Methylpyrroline (K)</option>
        <option value="methylsulfonylethyl (C)">methylsulfonylethyl (C)</option>
        <option value="methylsulfonylethyl (H)">methylsulfonylethyl (H)</option>
        <option value="methylsulfonylethyl (K)">methylsulfonylethyl (K)</option>
        <option value="Methylthio (C)">Methylthio (C)</option>
        <option value="Methylthio (D)">Methylthio (D)</option>
        <option value="Methylthio (K)">Methylthio (K)</option>
        <option value="Methylthio (N)">Methylthio (N)</option>
        <option value="Methylthio (N-term)">Methylthio (N-term)</option>
        <option value="MG-H1 (R)">MG-H1 (R)</option>
        <option value="Microcin (Protein C-term)">Microcin (Protein C-term)</option>
        <option value="MicrocinC7 (Protein C-term)">MicrocinC7 (Protein C-term)</option>
        <option value="MM-diphenylpentanone (C)">MM-diphenylpentanone (C)</option>
        <option value="Molybdopterin (C)">Molybdopterin (C)</option>
        <option value="MolybdopterinGD (C)">MolybdopterinGD (C)</option>
        <option value="MolybdopterinGD (D)">MolybdopterinGD (D)</option>
        <option value="MolybdopterinGD (U)">MolybdopterinGD (U)</option>
        <option value="MolybdopterinGD+Delta:S(-1)Se(1) (C)">MolybdopterinGD+Delta:S(-1)Se(1) (C)</option>
        <option value="monomethylphosphothione (C)">monomethylphosphothione (C)</option>
        <option value="monomethylphosphothione (H)">monomethylphosphothione (H)</option>
        <option value="monomethylphosphothione (K)">monomethylphosphothione (K)</option>
        <option value="monomethylphosphothione (S)">monomethylphosphothione (S)</option>
        <option value="monomethylphosphothione (T)">monomethylphosphothione (T)</option>
        <option value="monomethylphosphothione (Y)">monomethylphosphothione (Y)</option>
        <option value="mTRAQ (H)">mTRAQ (H)</option>
        <option value="mTRAQ (K)">mTRAQ (K)</option>
        <option value="mTRAQ (N-term)">mTRAQ (N-term)</option>
        <option value="mTRAQ (S)">mTRAQ (S)</option>
        <option value="mTRAQ (T)">mTRAQ (T)</option>
        <option value="mTRAQ (Y)">mTRAQ (Y)</option>
        <option value="mTRAQ:13C(3)15N(1) (H)">mTRAQ:13C(3)15N(1) (H)</option>
        <option value="mTRAQ:13C(3)15N(1) (K)">mTRAQ:13C(3)15N(1) (K)</option>
        <option value="mTRAQ:13C(3)15N(1) (N-term)">mTRAQ:13C(3)15N(1) (N-term)</option>
        <option value="mTRAQ:13C(3)15N(1) (S)">mTRAQ:13C(3)15N(1) (S)</option>
        <option value="mTRAQ:13C(3)15N(1) (T)">mTRAQ:13C(3)15N(1) (T)</option>
        <option value="mTRAQ:13C(3)15N(1) (Y)">mTRAQ:13C(3)15N(1) (Y)</option>
        <option value="mTRAQ:13C(6)15N(2) (H)">mTRAQ:13C(6)15N(2) (H)</option>
        <option value="mTRAQ:13C(6)15N(2) (K)">mTRAQ:13C(6)15N(2) (K)</option>
        <option value="mTRAQ:13C(6)15N(2) (N-term)">mTRAQ:13C(6)15N(2) (N-term)</option>
        <option value="mTRAQ:13C(6)15N(2) (S)">mTRAQ:13C(6)15N(2) (S)</option>
        <option value="mTRAQ:13C(6)15N(2) (T)">mTRAQ:13C(6)15N(2) (T)</option>
        <option value="mTRAQ:13C(6)15N(2) (Y)">mTRAQ:13C(6)15N(2) (Y)</option>
        <option value="MTSL (C)">MTSL (C)</option>
        <option value="MurNAc (A)">MurNAc (A)</option>
        <option value="Myristoleyl (Protein N-term G)">Myristoleyl (Protein N-term G)</option>
        <option value="Myristoyl (C)">Myristoyl (C)</option>
        <option value="Myristoyl (K)">Myristoyl (K)</option>
        <option value="Myristoyl (N-term G)">Myristoyl (N-term G)</option>
        <option value="Myristoyl+Delta:H(-4) (Protein N-term G)">Myristoyl+Delta:H(-4) (Protein N-term G)</option>
        <option value="N-dimethylphosphate (S)">N-dimethylphosphate (S)</option>
        <option value="NA-LNO2 (C)">NA-LNO2 (C)</option>
        <option value="NA-LNO2 (H)">NA-LNO2 (H)</option>
        <option value="NA-OA-NO2 (C)">NA-OA-NO2 (C)</option>
        <option value="NA-OA-NO2 (H)">NA-OA-NO2 (H)</option>
        <option value="NBS (W)">NBS (W)</option>
        <option value="NBS:13C(6) (W)">NBS:13C(6) (W)</option>
        <option value="NDA (K)">NDA (K)</option>
        <option value="NDA (N-term)">NDA (N-term)</option>
        <option value="NEIAA (C)">NEIAA (C)</option>
        <option value="NEIAA (Y)">NEIAA (Y)</option>
        <option value="NEIAA:2H(5) (C)">NEIAA:2H(5) (C)</option>
        <option value="NEIAA:2H(5) (Y)">NEIAA:2H(5) (Y)</option>
        <option value="NEM:2H(5) (C)">NEM:2H(5) (C)</option>
        <option value="NEM:2H(5)+H2O (C)">NEM:2H(5)+H2O (C)</option>
        <option value="NEMsulfur (C)">NEMsulfur (C)</option>
        <option value="NEMsulfurWater (C)">NEMsulfurWater (C)</option>
        <option value="Nethylmaleimide (C)">Nethylmaleimide (C)</option>
        <option value="Nethylmaleimide+water (C)">Nethylmaleimide+water (C)</option>
        <option value="Nethylmaleimide+water (K)">Nethylmaleimide+water (K)</option>
        <option value="NeuAc (N)">NeuAc (N)</option>
        <option value="NeuAc (S)">NeuAc (S)</option>
        <option value="NeuAc (T)">NeuAc (T)</option>
        <option value="NeuGc (N)">NeuGc (N)</option>
        <option value="NeuGc (S)">NeuGc (S)</option>
        <option value="NeuGc (T)">NeuGc (T)</option>
        <option value="NHS-fluorescein (K)">NHS-fluorescein (K)</option>
        <option value="NHS-LC-Biotin (K)">NHS-LC-Biotin (K)</option>
        <option value="NHS-LC-Biotin (N-term)">NHS-LC-Biotin (N-term)</option>
        <option value="NIC (K)">NIC (K)</option>
        <option value="NIC (N-term)">NIC (N-term)</option>
        <option value="NIPCAM (C)">NIPCAM (C)</option>
        <option value="Nitrene (Y)">Nitrene (Y)</option>
        <option value="Nitro (F)">Nitro (F)</option>
        <option value="Nitro (W)">Nitro (W)</option>
        <option value="Nitro (Y)">Nitro (Y)</option>
        <option value="Nitrosyl (C)">Nitrosyl (C)</option>
        <option value="Nitrosyl (Y)">Nitrosyl (Y)</option>
        <option value="Nmethylmaleimide (C)">Nmethylmaleimide (C)</option>
        <option value="Nmethylmaleimide (K)">Nmethylmaleimide (K)</option>
        <option value="Nmethylmaleimide+water (C)">Nmethylmaleimide+water (C)</option>
        <option value="NO_SMX_SEMD (C)">NO_SMX_SEMD (C)</option>
        <option value="NO_SMX_SIMD (C)">NO_SMX_SIMD (C)</option>
        <option value="NP40 (N-term)">NP40 (N-term)</option>
        <option value="NQIGG (K)">NQIGG (K)</option>
        <option value="O-Dimethylphosphate (S)">O-Dimethylphosphate (S)</option>
        <option value="O-Dimethylphosphate (T)">O-Dimethylphosphate (T)</option>
        <option value="O-Dimethylphosphate (Y)">O-Dimethylphosphate (Y)</option>
        <option value="O-Et-N-diMePhospho (S)">O-Et-N-diMePhospho (S)</option>
        <option value="O-Isopropylmethylphosphonate (S)">O-Isopropylmethylphosphonate (S)</option>
        <option value="O-Isopropylmethylphosphonate (T)">O-Isopropylmethylphosphonate (T)</option>
        <option value="O-Isopropylmethylphosphonate (Y)">O-Isopropylmethylphosphonate (Y)</option>
        <option value="O-Methylphosphate (S)">O-Methylphosphate (S)</option>
        <option value="O-Methylphosphate (T)">O-Methylphosphate (T)</option>
        <option value="O-Methylphosphate (Y)">O-Methylphosphate (Y)</option>
        <option value="O-pinacolylmethylphosphonate (H)">O-pinacolylmethylphosphonate (H)</option>
        <option value="O-pinacolylmethylphosphonate (K)">O-pinacolylmethylphosphonate (K)</option>
        <option value="O-pinacolylmethylphosphonate (S)">O-pinacolylmethylphosphonate (S)</option>
        <option value="O-pinacolylmethylphosphonate (T)">O-pinacolylmethylphosphonate (T)</option>
        <option value="O-pinacolylmethylphosphonate (Y)">O-pinacolylmethylphosphonate (Y)</option>
        <option value="Octanoyl (C)">Octanoyl (C)</option>
        <option value="Octanoyl (S)">Octanoyl (S)</option>
        <option value="Octanoyl (T)">Octanoyl (T)</option>
        <option value="OxArgBiotin (R)">OxArgBiotin (R)</option>
        <option value="OxArgBiotinRed (R)">OxArgBiotinRed (R)</option>
        <option value="Oxidation (C)">Oxidation (C)</option>
        <option value="Oxidation (C-term G)">Oxidation (C-term G)</option>
        <option value="Oxidation (D)">Oxidation (D)</option>
        <option value="Oxidation (E)">Oxidation (E)</option>
        <option value="Oxidation (F)">Oxidation (F)</option>
        <option value="Oxidation (H)">Oxidation (H)</option>
        <option value="Oxidation (I)">Oxidation (I)</option>
        <option value="Oxidation (K)">Oxidation (K)</option>
        <option value="Oxidation (L)">Oxidation (L)</option>
        <option value="Oxidation (M)">Oxidation (M)</option>
        <option value="Oxidation (N)">Oxidation (N)</option>
        <option value="Oxidation (P)">Oxidation (P)</option>
        <option value="Oxidation (Q)">Oxidation (Q)</option>
        <option value="Oxidation (R)">Oxidation (R)</option>
        <option value="Oxidation (S)">Oxidation (S)</option>
        <option value="Oxidation (T)">Oxidation (T)</option>
        <option value="Oxidation (U)">Oxidation (U)</option>
        <option value="Oxidation (V)">Oxidation (V)</option>
        <option value="Oxidation (W)">Oxidation (W)</option>
        <option value="Oxidation (Y)">Oxidation (Y)</option>
        <option value="Oxidation+NEM (C)">Oxidation+NEM (C)</option>
        <option value="OxLysBiotin (K)">OxLysBiotin (K)</option>
        <option value="OxLysBiotinRed (K)">OxLysBiotinRed (K)</option>
        <option value="OxProBiotin (P)">OxProBiotin (P)</option>
        <option value="OxProBiotinRed (P)">OxProBiotinRed (P)</option>
        <option value="Palmitoleyl (C)">Palmitoleyl (C)</option>
        <option value="Palmitoleyl (S)">Palmitoleyl (S)</option>
        <option value="Palmitoleyl (T)">Palmitoleyl (T)</option>
        <option value="Palmitoyl (C)">Palmitoyl (C)</option>
        <option value="Palmitoyl (K)">Palmitoyl (K)</option>
        <option value="Palmitoyl (Protein N-term)">Palmitoyl (Protein N-term)</option>
        <option value="Palmitoyl (S)">Palmitoyl (S)</option>
        <option value="Palmitoyl (T)">Palmitoyl (T)</option>
        <option value="PEITC (C)">PEITC (C)</option>
        <option value="PEITC (K)">PEITC (K)</option>
        <option value="PEITC (N-term)">PEITC (N-term)</option>
        <option value="Pent(1)HexNAc(1) (S)">Pent(1)HexNAc(1) (S)</option>
        <option value="Pent(1)HexNAc(1) (T)">Pent(1)HexNAc(1) (T)</option>
        <option value="Pent(2) (S)">Pent(2) (S)</option>
        <option value="Pent(2) (T)">Pent(2) (T)</option>
        <option value="Pentose (S)">Pentose (S)</option>
        <option value="Pentose (T)">Pentose (T)</option>
        <option value="Pentylamine (Q)">Pentylamine (Q)</option>
        <option value="PEO-Iodoacetyl-LC-Biotin (C)">PEO-Iodoacetyl-LC-Biotin (C)</option>
        <option value="PET (S)">PET (S)</option>
        <option value="PET (T)">PET (T)</option>
        <option value="Phe-&gt;Ala (F)">Phe-&gt;Ala (F)</option>
        <option value="Phe-&gt;Arg (F)">Phe-&gt;Arg (F)</option>
        <option value="Phe-&gt;Asn (F)">Phe-&gt;Asn (F)</option>
        <option value="Phe-&gt;Asp (F)">Phe-&gt;Asp (F)</option>
        <option value="Phe-&gt;CamCys (F)">Phe-&gt;CamCys (F)</option>
        <option value="Phe-&gt;Cys (F)">Phe-&gt;Cys (F)</option>
        <option value="Phe-&gt;Gln (F)">Phe-&gt;Gln (F)</option>
        <option value="Phe-&gt;Glu (F)">Phe-&gt;Glu (F)</option>
        <option value="Phe-&gt;Gly (F)">Phe-&gt;Gly (F)</option>
        <option value="Phe-&gt;His (F)">Phe-&gt;His (F)</option>
        <option value="Phe-&gt;Lys (F)">Phe-&gt;Lys (F)</option>
        <option value="Phe-&gt;Met (F)">Phe-&gt;Met (F)</option>
        <option value="Phe-&gt;Pro (F)">Phe-&gt;Pro (F)</option>
        <option value="Phe-&gt;Ser (F)">Phe-&gt;Ser (F)</option>
        <option value="Phe-&gt;Thr (F)">Phe-&gt;Thr (F)</option>
        <option value="Phe-&gt;Trp (F)">Phe-&gt;Trp (F)</option>
        <option value="Phe-&gt;Tyr (F)">Phe-&gt;Tyr (F)</option>
        <option value="Phe-&gt;Val (F)">Phe-&gt;Val (F)</option>
        <option value="Phe-&gt;Xle (F)">Phe-&gt;Xle (F)</option>
        <option value="phenyl-phosphate (K)">phenyl-phosphate (K)</option>
        <option value="phenyl-phosphate (S)">phenyl-phosphate (S)</option>
        <option value="phenyl-phosphate (T)">phenyl-phosphate (T)</option>
        <option value="phenyl-phosphate (Y)">phenyl-phosphate (Y)</option>
        <option value="Phenylisocyanate (N-term)">Phenylisocyanate (N-term)</option>
        <option value="Phenylisocyanate:2H(5) (N-term)">Phenylisocyanate:2H(5) (N-term)</option>
        <option value="phenylsulfonylethyl (C)">phenylsulfonylethyl (C)</option>
        <option value="Phospho (C)">Phospho (C)</option>
        <option value="Phospho (D)">Phospho (D)</option>
        <option value="Phospho (E)">Phospho (E)</option>
        <option value="Phospho (H)">Phospho (H)</option>
        <option value="Phospho (K)">Phospho (K)</option>
        <option value="Phospho (R)">Phospho (R)</option>
        <option value="Phospho (S)">Phospho (S)</option>
        <option value="Phospho (T)">Phospho (T)</option>
        <option value="Phospho (Y)">Phospho (Y)</option>
        <option value="Phosphoadenosine (H)">Phosphoadenosine (H)</option>
        <option value="Phosphoadenosine (K)">Phosphoadenosine (K)</option>
        <option value="Phosphoadenosine (S)">Phosphoadenosine (S)</option>
        <option value="Phosphoadenosine (T)">Phosphoadenosine (T)</option>
        <option value="Phosphoadenosine (Y)">Phosphoadenosine (Y)</option>
        <option value="PhosphoCytidine (S)">PhosphoCytidine (S)</option>
        <option value="PhosphoCytidine (T)">PhosphoCytidine (T)</option>
        <option value="PhosphoCytidine (Y)">PhosphoCytidine (Y)</option>
        <option value="Phosphogluconoylation (K)">Phosphogluconoylation (K)</option>
        <option value="Phosphogluconoylation (N-term)">Phosphogluconoylation (N-term)</option>
        <option value="Phosphoguanosine (H)">Phosphoguanosine (H)</option>
        <option value="Phosphoguanosine (K)">Phosphoguanosine (K)</option>
        <option value="PhosphoHex (S)">PhosphoHex (S)</option>
        <option value="PhosphoHex (T)">PhosphoHex (T)</option>
        <option value="PhosphoHex(2) (N)">PhosphoHex(2) (N)</option>
        <option value="PhosphoHex(2) (S)">PhosphoHex(2) (S)</option>
        <option value="PhosphoHex(2) (T)">PhosphoHex(2) (T)</option>
        <option value="PhosphoHexNAc (S)">PhosphoHexNAc (S)</option>
        <option value="PhosphoHexNAc (T)">PhosphoHexNAc (T)</option>
        <option value="Phosphopantetheine (S)">Phosphopantetheine (S)</option>
        <option value="Phosphopropargyl (S)">Phosphopropargyl (S)</option>
        <option value="Phosphopropargyl (T)">Phosphopropargyl (T)</option>
        <option value="Phosphopropargyl (Y)">Phosphopropargyl (Y)</option>
        <option value="phosphoRibosyl (D)">phosphoRibosyl (D)</option>
        <option value="phosphoRibosyl (E)">phosphoRibosyl (E)</option>
        <option value="phosphoRibosyl (R)">phosphoRibosyl (R)</option>
        <option value="PhosphoribosyldephosphoCoA (S)">PhosphoribosyldephosphoCoA (S)</option>
        <option value="PhosphoUridine (H)">PhosphoUridine (H)</option>
        <option value="PhosphoUridine (Y)">PhosphoUridine (Y)</option>
        <option value="Phycocyanobilin (C)">Phycocyanobilin (C)</option>
        <option value="Phycoerythrobilin (C)">Phycoerythrobilin (C)</option>
        <option value="Phytochromobilin (C)">Phytochromobilin (C)</option>
        <option value="Piperidine (K)">Piperidine (K)</option>
        <option value="Piperidine (N-term)">Piperidine (N-term)</option>
        <option value="Pro+O(2) (H)">Pro+O(2) (H)</option>
        <option value="Pro-&gt;Ala (P)">Pro-&gt;Ala (P)</option>
        <option value="Pro-&gt;Arg (P)">Pro-&gt;Arg (P)</option>
        <option value="Pro-&gt;Asn (P)">Pro-&gt;Asn (P)</option>
        <option value="Pro-&gt;Asp (P)">Pro-&gt;Asp (P)</option>
        <option value="Pro-&gt;Cys (P)">Pro-&gt;Cys (P)</option>
        <option value="Pro-&gt;Gln (P)">Pro-&gt;Gln (P)</option>
        <option value="Pro-&gt;Glu (P)">Pro-&gt;Glu (P)</option>
        <option value="Pro-&gt;Gly (P)">Pro-&gt;Gly (P)</option>
        <option value="Pro-&gt;HAVA (P)">Pro-&gt;HAVA (P)</option>
        <option value="Pro-&gt;His (P)">Pro-&gt;His (P)</option>
        <option value="Pro-&gt;Lys (P)">Pro-&gt;Lys (P)</option>
        <option value="Pro-&gt;Met (P)">Pro-&gt;Met (P)</option>
        <option value="Pro-&gt;Phe (P)">Pro-&gt;Phe (P)</option>
        <option value="Pro-&gt;pyro-Glu (P)">Pro-&gt;pyro-Glu (P)</option>
        <option value="Pro-&gt;Pyrrolidinone (P)">Pro-&gt;Pyrrolidinone (P)</option>
        <option value="Pro-&gt;Pyrrolidone (P)">Pro-&gt;Pyrrolidone (P)</option>
        <option value="Pro-&gt;Ser (P)">Pro-&gt;Ser (P)</option>
        <option value="Pro-&gt;Thr (P)">Pro-&gt;Thr (P)</option>
        <option value="Pro-&gt;Trp (P)">Pro-&gt;Trp (P)</option>
        <option value="Pro-&gt;Tyr (P)">Pro-&gt;Tyr (P)</option>
        <option value="Pro-&gt;Val (P)">Pro-&gt;Val (P)</option>
        <option value="Pro-&gt;Xle (P)">Pro-&gt;Xle (P)</option>
        <option value="probiotinhydrazide (P)">probiotinhydrazide (P)</option>
        <option value="Propargylamine (C-term)">Propargylamine (C-term)</option>
        <option value="Propargylamine (D)">Propargylamine (D)</option>
        <option value="Propargylamine (E)">Propargylamine (E)</option>
        <option value="Propionamide (C)">Propionamide (C)</option>
        <option value="Propionamide (K)">Propionamide (K)</option>
        <option value="Propionamide (N-term)">Propionamide (N-term)</option>
        <option value="Propionamide:2H(3) (C)">Propionamide:2H(3) (C)</option>
        <option value="Propionyl (K)">Propionyl (K)</option>
        <option value="Propionyl (N-term)">Propionyl (N-term)</option>
        <option value="Propionyl (Protein N-term)">Propionyl (Protein N-term)</option>
        <option value="Propionyl (S)">Propionyl (S)</option>
        <option value="Propionyl (T)">Propionyl (T)</option>
        <option value="Propionyl:13C(3) (K)">Propionyl:13C(3) (K)</option>
        <option value="Propionyl:13C(3) (N-term)">Propionyl:13C(3) (N-term)</option>
        <option value="Propiophenone (C)">Propiophenone (C)</option>
        <option value="Propiophenone (H)">Propiophenone (H)</option>
        <option value="Propiophenone (K)">Propiophenone (K)</option>
        <option value="Propiophenone (R)">Propiophenone (R)</option>
        <option value="Propiophenone (S)">Propiophenone (S)</option>
        <option value="Propiophenone (T)">Propiophenone (T)</option>
        <option value="Propiophenone (W)">Propiophenone (W)</option>
        <option value="Propyl (C-term)">Propyl (C-term)</option>
        <option value="Propyl (D)">Propyl (D)</option>
        <option value="Propyl (E)">Propyl (E)</option>
        <option value="Propyl (K)">Propyl (K)</option>
        <option value="Propyl (N-term)">Propyl (N-term)</option>
        <option value="Propyl (Protein C-term)">Propyl (Protein C-term)</option>
        <option value="Propyl:2H(6) (K)">Propyl:2H(6) (K)</option>
        <option value="Propyl:2H(6) (N-term)">Propyl:2H(6) (N-term)</option>
        <option value="PropylNAGthiazoline (C)">PropylNAGthiazoline (C)</option>
        <option value="PS_Hapten (C)">PS_Hapten (C)</option>
        <option value="PS_Hapten (H)">PS_Hapten (H)</option>
        <option value="PS_Hapten (K)">PS_Hapten (K)</option>
        <option value="pupylation (K)">pupylation (K)</option>
        <option value="Puromycin (C-term)">Puromycin (C-term)</option>
        <option value="PyMIC (N-term)">PyMIC (N-term)</option>
        <option value="PyridoxalPhosphate (K)">PyridoxalPhosphate (K)</option>
        <option value="PyridoxalPhosphateH2 (K)">PyridoxalPhosphateH2 (K)</option>
        <option value="Pyridylacetyl (K)">Pyridylacetyl (K)</option>
        <option value="Pyridylacetyl (N-term)">Pyridylacetyl (N-term)</option>
        <option value="Pyridylethyl (C)">Pyridylethyl (C)</option>
        <option value="Pyro-carbamidomethyl (N-term C)">Pyro-carbamidomethyl (N-term C)</option>
        <option value="pyrophospho (S)">pyrophospho (S)</option>
        <option value="pyrophospho (T)">pyrophospho (T)</option>
        <option value="PyruvicAcidIminyl (K)">PyruvicAcidIminyl (K)</option>
        <option value="PyruvicAcidIminyl (Protein N-term C)">PyruvicAcidIminyl (Protein N-term C)</option>
        <option value="PyruvicAcidIminyl (Protein N-term V)">PyruvicAcidIminyl (Protein N-term V)</option>
        <option value="QAT (C)">QAT (C)</option>
        <option value="QAT:2H(3) (C)">QAT:2H(3) (C)</option>
        <option value="QEQTGG (K)">QEQTGG (K)</option>
        <option value="QQQTGG (K)">QQQTGG (K)</option>
        <option value="QTGG (K)">QTGG (K)</option>
        <option value="Quinone (W)">Quinone (W)</option>
        <option value="Quinone (Y)">Quinone (Y)</option>
        <option value="RBS-ID_Uridine (A)">RBS-ID_Uridine (A)</option>
        <option value="RBS-ID_Uridine (C)">RBS-ID_Uridine (C)</option>
        <option value="RBS-ID_Uridine (D)">RBS-ID_Uridine (D)</option>
        <option value="RBS-ID_Uridine (E)">RBS-ID_Uridine (E)</option>
        <option value="RBS-ID_Uridine (F)">RBS-ID_Uridine (F)</option>
        <option value="RBS-ID_Uridine (G)">RBS-ID_Uridine (G)</option>
        <option value="RBS-ID_Uridine (H)">RBS-ID_Uridine (H)</option>
        <option value="RBS-ID_Uridine (I)">RBS-ID_Uridine (I)</option>
        <option value="RBS-ID_Uridine (K)">RBS-ID_Uridine (K)</option>
        <option value="RBS-ID_Uridine (L)">RBS-ID_Uridine (L)</option>
        <option value="RBS-ID_Uridine (M)">RBS-ID_Uridine (M)</option>
        <option value="RBS-ID_Uridine (N)">RBS-ID_Uridine (N)</option>
        <option value="RBS-ID_Uridine (P)">RBS-ID_Uridine (P)</option>
        <option value="RBS-ID_Uridine (Q)">RBS-ID_Uridine (Q)</option>
        <option value="RBS-ID_Uridine (R)">RBS-ID_Uridine (R)</option>
        <option value="RBS-ID_Uridine (S)">RBS-ID_Uridine (S)</option>
        <option value="RBS-ID_Uridine (T)">RBS-ID_Uridine (T)</option>
        <option value="RBS-ID_Uridine (V)">RBS-ID_Uridine (V)</option>
        <option value="RBS-ID_Uridine (W)">RBS-ID_Uridine (W)</option>
        <option value="RBS-ID_Uridine (Y)">RBS-ID_Uridine (Y)</option>
        <option value="Retinylidene (K)">Retinylidene (K)</option>
        <option value="RNPXL (N-term K)">RNPXL (N-term K)</option>
        <option value="RNPXL (N-term R)">RNPXL (N-term R)</option>
        <option value="RNPXlink1 (C)">RNPXlink1 (C)</option>
        <option value="s-GlcNAc (S)">s-GlcNAc (S)</option>
        <option value="s-GlcNAc (T)">s-GlcNAc (T)</option>
        <option value="Saligenin (H)">Saligenin (H)</option>
        <option value="Saligenin (K)">Saligenin (K)</option>
        <option value="Ser-&gt;Ala (S)">Ser-&gt;Ala (S)</option>
        <option value="Ser-&gt;Arg (S)">Ser-&gt;Arg (S)</option>
        <option value="Ser-&gt;Asn (S)">Ser-&gt;Asn (S)</option>
        <option value="Ser-&gt;Asp (S)">Ser-&gt;Asp (S)</option>
        <option value="Ser-&gt;Cys (S)">Ser-&gt;Cys (S)</option>
        <option value="Ser-&gt;Gln (S)">Ser-&gt;Gln (S)</option>
        <option value="Ser-&gt;Glu (S)">Ser-&gt;Glu (S)</option>
        <option value="Ser-&gt;Gly (S)">Ser-&gt;Gly (S)</option>
        <option value="Ser-&gt;His (S)">Ser-&gt;His (S)</option>
        <option value="Ser-&gt;LacticAcid (Protein N-term S)">Ser-&gt;LacticAcid (Protein N-term S)</option>
        <option value="Ser-&gt;Lys (S)">Ser-&gt;Lys (S)</option>
        <option value="Ser-&gt;Met (S)">Ser-&gt;Met (S)</option>
        <option value="Ser-&gt;Phe (S)">Ser-&gt;Phe (S)</option>
        <option value="Ser-&gt;Pro (S)">Ser-&gt;Pro (S)</option>
        <option value="Ser-&gt;Thr (S)">Ser-&gt;Thr (S)</option>
        <option value="Ser-&gt;Trp (S)">Ser-&gt;Trp (S)</option>
        <option value="Ser-&gt;Tyr (S)">Ser-&gt;Tyr (S)</option>
        <option value="Ser-&gt;Val (S)">Ser-&gt;Val (S)</option>
        <option value="Ser-&gt;Xle (S)">Ser-&gt;Xle (S)</option>
        <option value="serotonylation (Q)">serotonylation (Q)</option>
        <option value="shTMT (K)">shTMT (K)</option>
        <option value="shTMT (N-term)">shTMT (N-term)</option>
        <option value="shTMT (Protein N-term)">shTMT (Protein N-term)</option>
        <option value="shTMTpro (K)">shTMTpro (K)</option>
        <option value="shTMTpro (N-term)">shTMTpro (N-term)</option>
        <option value="shTMTpro (Protein N-term)">shTMTpro (Protein N-term)</option>
        <option value="SMA (K)">SMA (K)</option>
        <option value="SMA (N-term)">SMA (N-term)</option>
        <option value="spermidine (Q)">spermidine (Q)</option>
        <option value="spermine (Q)">spermine (Q)</option>
        <option value="SPITC (K)">SPITC (K)</option>
        <option value="SPITC (N-term)">SPITC (N-term)</option>
        <option value="SPITC:13C(6) (K)">SPITC:13C(6) (K)</option>
        <option value="SPITC:13C(6) (N-term)">SPITC:13C(6) (N-term)</option>
        <option value="Succinyl (K)">Succinyl (K)</option>
        <option value="Succinyl (N-term)">Succinyl (N-term)</option>
        <option value="Succinyl (Protein N-term)">Succinyl (Protein N-term)</option>
        <option value="Succinyl:13C(4) (K)">Succinyl:13C(4) (K)</option>
        <option value="Succinyl:13C(4) (N-term)">Succinyl:13C(4) (N-term)</option>
        <option value="Succinyl:2H(4) (K)">Succinyl:2H(4) (K)</option>
        <option value="Succinyl:2H(4) (N-term)">Succinyl:2H(4) (N-term)</option>
        <option value="SulfanilicAcid (C-term)">SulfanilicAcid (C-term)</option>
        <option value="SulfanilicAcid (D)">SulfanilicAcid (D)</option>
        <option value="SulfanilicAcid (E)">SulfanilicAcid (E)</option>
        <option value="SulfanilicAcid:13C(6) (C-term)">SulfanilicAcid:13C(6) (C-term)</option>
        <option value="SulfanilicAcid:13C(6) (D)">SulfanilicAcid:13C(6) (D)</option>
        <option value="SulfanilicAcid:13C(6) (E)">SulfanilicAcid:13C(6) (E)</option>
        <option value="Sulfide (C)">Sulfide (C)</option>
        <option value="Sulfide (D)">Sulfide (D)</option>
        <option value="Sulfide (W)">Sulfide (W)</option>
        <option value="Sulfo (C)">Sulfo (C)</option>
        <option value="Sulfo (S)">Sulfo (S)</option>
        <option value="Sulfo (T)">Sulfo (T)</option>
        <option value="Sulfo (Y)">Sulfo (Y)</option>
        <option value="sulfo+amino (Y)">sulfo+amino (Y)</option>
        <option value="Sulfo-NHS-LC-LC-Biotin (K)">Sulfo-NHS-LC-LC-Biotin (K)</option>
        <option value="Sulfo-NHS-LC-LC-Biotin (N-term)">Sulfo-NHS-LC-LC-Biotin (N-term)</option>
        <option value="SulfoGMBS (C)">SulfoGMBS (C)</option>
        <option value="SulfurDioxide (C)">SulfurDioxide (C)</option>
        <option value="SUMO2135 (K)">SUMO2135 (K)</option>
        <option value="SUMO3549 (K)">SUMO3549 (K)</option>
        <option value="TAMRA-FP (S)">TAMRA-FP (S)</option>
        <option value="TAMRA-FP (Y)">TAMRA-FP (Y)</option>
        <option value="Thiadiazole (C)">Thiadiazole (C)</option>
        <option value="Thiazolidine (C)">Thiazolidine (C)</option>
        <option value="Thiazolidine (F)">Thiazolidine (F)</option>
        <option value="Thiazolidine (H)">Thiazolidine (H)</option>
        <option value="Thiazolidine (K)">Thiazolidine (K)</option>
        <option value="Thiazolidine (Protein N-term)">Thiazolidine (Protein N-term)</option>
        <option value="Thiazolidine (R)">Thiazolidine (R)</option>
        <option value="Thiazolidine (W)">Thiazolidine (W)</option>
        <option value="Thiazolidine (Y)">Thiazolidine (Y)</option>
        <option value="thioacylPA (K)">thioacylPA (K)</option>
        <option value="Thiophos-S-S-biotin (S)">Thiophos-S-S-biotin (S)</option>
        <option value="Thiophos-S-S-biotin (T)">Thiophos-S-S-biotin (T)</option>
        <option value="Thiophos-S-S-biotin (Y)">Thiophos-S-S-biotin (Y)</option>
        <option value="Thiophospho (S)">Thiophospho (S)</option>
        <option value="Thiophospho (T)">Thiophospho (T)</option>
        <option value="Thiophospho (Y)">Thiophospho (Y)</option>
        <option value="Thr-&gt;Ala (T)">Thr-&gt;Ala (T)</option>
        <option value="Thr-&gt;Arg (T)">Thr-&gt;Arg (T)</option>
        <option value="Thr-&gt;Asn (T)">Thr-&gt;Asn (T)</option>
        <option value="Thr-&gt;Asp (T)">Thr-&gt;Asp (T)</option>
        <option value="Thr-&gt;Cys (T)">Thr-&gt;Cys (T)</option>
        <option value="Thr-&gt;Gln (T)">Thr-&gt;Gln (T)</option>
        <option value="Thr-&gt;Glu (T)">Thr-&gt;Glu (T)</option>
        <option value="Thr-&gt;Gly (T)">Thr-&gt;Gly (T)</option>
        <option value="Thr-&gt;His (T)">Thr-&gt;His (T)</option>
        <option value="Thr-&gt;Lys (T)">Thr-&gt;Lys (T)</option>
        <option value="Thr-&gt;Met (T)">Thr-&gt;Met (T)</option>
        <option value="Thr-&gt;Phe (T)">Thr-&gt;Phe (T)</option>
        <option value="Thr-&gt;Pro (T)">Thr-&gt;Pro (T)</option>
        <option value="Thr-&gt;Ser (T)">Thr-&gt;Ser (T)</option>
        <option value="Thr-&gt;Trp (T)">Thr-&gt;Trp (T)</option>
        <option value="Thr-&gt;Tyr (T)">Thr-&gt;Tyr (T)</option>
        <option value="Thr-&gt;Val (T)">Thr-&gt;Val (T)</option>
        <option value="Thr-&gt;Xle (T)">Thr-&gt;Xle (T)</option>
        <option value="Thrbiotinhydrazide (T)">Thrbiotinhydrazide (T)</option>
        <option value="Thyroxine (Y)">Thyroxine (Y)</option>
        <option value="TMAB (K)">TMAB (K)</option>
        <option value="TMAB (N-term)">TMAB (N-term)</option>
        <option value="TMAB:2H(9) (K)">TMAB:2H(9) (K)</option>
        <option value="TMAB:2H(9) (N-term)">TMAB:2H(9) (N-term)</option>
        <option value="TMPP-Ac (K)">TMPP-Ac (K)</option>
        <option value="TMPP-Ac (N-term)">TMPP-Ac (N-term)</option>
        <option value="TMPP-Ac (Y)">TMPP-Ac (Y)</option>
        <option value="TMPP-Ac:13C(9) (K)">TMPP-Ac:13C(9) (K)</option>
        <option value="TMPP-Ac:13C(9) (N-term)">TMPP-Ac:13C(9) (N-term)</option>
        <option value="TMPP-Ac:13C(9) (Y)">TMPP-Ac:13C(9) (Y)</option>
        <option value="TMT (H)">TMT (H)</option>
        <option value="TMT (K)">TMT (K)</option>
        <option value="TMT (N-term)">TMT (N-term)</option>
        <option value="TMT (Protein N-term)">TMT (Protein N-term)</option>
        <option value="TMT (S)">TMT (S)</option>
        <option value="TMT (T)">TMT (T)</option>
        <option value="TMT2plex (H)">TMT2plex (H)</option>
        <option value="TMT2plex (K)">TMT2plex (K)</option>
        <option value="TMT2plex (N-term)">TMT2plex (N-term)</option>
        <option value="TMT2plex (Protein N-term)">TMT2plex (Protein N-term)</option>
        <option value="TMT2plex (S)">TMT2plex (S)</option>
        <option value="TMT2plex (T)">TMT2plex (T)</option>
        <option value="TMT6plex (H)">TMT6plex (H)</option>
        <option value="TMT6plex (K)">TMT6plex (K)</option>
        <option value="TMT6plex (N-term)">TMT6plex (N-term)</option>
        <option value="TMT6plex (Protein N-term)">TMT6plex (Protein N-term)</option>
        <option value="TMT6plex (S)">TMT6plex (S)</option>
        <option value="TMT6plex (T)">TMT6plex (T)</option>
        <option value="TMTpro (H)">TMTpro (H)</option>
        <option value="TMTpro (K)">TMTpro (K)</option>
        <option value="TMTpro (N-term)">TMTpro (N-term)</option>
        <option value="TMTpro (Protein N-term)">TMTpro (Protein N-term)</option>
        <option value="TMTpro (S)">TMTpro (S)</option>
        <option value="TMTpro (T)">TMTpro (T)</option>
        <option value="TMTpro_zero (H)">TMTpro_zero (H)</option>
        <option value="TMTpro_zero (K)">TMTpro_zero (K)</option>
        <option value="TMTpro_zero (N-term)">TMTpro_zero (N-term)</option>
        <option value="TMTpro_zero (Protein N-term)">TMTpro_zero (Protein N-term)</option>
        <option value="TMTpro_zero (S)">TMTpro_zero (S)</option>
        <option value="TMTpro_zero (T)">TMTpro_zero (T)</option>
        <option value="TNBS (K)">TNBS (K)</option>
        <option value="TNBS (N-term)">TNBS (N-term)</option>
        <option value="trifluoro (L)">trifluoro (L)</option>
        <option value="Triiodo (Y)">Triiodo (Y)</option>
        <option value="Triiodothyronine (Y)">Triiodothyronine (Y)</option>
        <option value="Trimethyl (K)">Trimethyl (K)</option>
        <option value="Trimethyl (Protein N-term A)">Trimethyl (Protein N-term A)</option>
        <option value="Trimethyl (R)">Trimethyl (R)</option>
        <option value="Trimethyl:13C(3)2H(9) (K)">Trimethyl:13C(3)2H(9) (K)</option>
        <option value="Trimethyl:13C(3)2H(9) (R)">Trimethyl:13C(3)2H(9) (R)</option>
        <option value="Trimethyl:2H(9) (K)">Trimethyl:2H(9) (K)</option>
        <option value="Trimethyl:2H(9) (R)">Trimethyl:2H(9) (R)</option>
        <option value="Trioxidation (C)">Trioxidation (C)</option>
        <option value="Trioxidation (F)">Trioxidation (F)</option>
        <option value="Trioxidation (W)">Trioxidation (W)</option>
        <option value="Trioxidation (Y)">Trioxidation (Y)</option>
        <option value="Tripalmitate (Protein N-term C)">Tripalmitate (Protein N-term C)</option>
        <option value="Tris (N)">Tris (N)</option>
        <option value="Triton (C-term)">Triton (C-term)</option>
        <option value="Triton (N-term)">Triton (N-term)</option>
        <option value="Trp-&gt;Ala (W)">Trp-&gt;Ala (W)</option>
        <option value="Trp-&gt;Arg (W)">Trp-&gt;Arg (W)</option>
        <option value="Trp-&gt;Asn (W)">Trp-&gt;Asn (W)</option>
        <option value="Trp-&gt;Asp (W)">Trp-&gt;Asp (W)</option>
        <option value="Trp-&gt;Cys (W)">Trp-&gt;Cys (W)</option>
        <option value="Trp-&gt;Gln (W)">Trp-&gt;Gln (W)</option>
        <option value="Trp-&gt;Glu (W)">Trp-&gt;Glu (W)</option>
        <option value="Trp-&gt;Gly (W)">Trp-&gt;Gly (W)</option>
        <option value="Trp-&gt;His (W)">Trp-&gt;His (W)</option>
        <option value="Trp-&gt;Hydroxykynurenin (W)">Trp-&gt;Hydroxykynurenin (W)</option>
        <option value="Trp-&gt;Kynurenin (W)">Trp-&gt;Kynurenin (W)</option>
        <option value="Trp-&gt;Lys (W)">Trp-&gt;Lys (W)</option>
        <option value="Trp-&gt;Met (W)">Trp-&gt;Met (W)</option>
        <option value="Trp-&gt;Oxolactone (W)">Trp-&gt;Oxolactone (W)</option>
        <option value="Trp-&gt;Phe (W)">Trp-&gt;Phe (W)</option>
        <option value="Trp-&gt;Pro (W)">Trp-&gt;Pro (W)</option>
        <option value="Trp-&gt;Ser (W)">Trp-&gt;Ser (W)</option>
        <option value="Trp-&gt;Thr (W)">Trp-&gt;Thr (W)</option>
        <option value="Trp-&gt;Tyr (W)">Trp-&gt;Tyr (W)</option>
        <option value="Trp-&gt;Val (W)">Trp-&gt;Val (W)</option>
        <option value="Trp-&gt;Xle (W)">Trp-&gt;Xle (W)</option>
        <option value="Tween20 (N-term)">Tween20 (N-term)</option>
        <option value="Tween80 (C-term)">Tween80 (C-term)</option>
        <option value="Tyr-&gt;Ala (Y)">Tyr-&gt;Ala (Y)</option>
        <option value="Tyr-&gt;Arg (Y)">Tyr-&gt;Arg (Y)</option>
        <option value="Tyr-&gt;Asn (Y)">Tyr-&gt;Asn (Y)</option>
        <option value="Tyr-&gt;Asp (Y)">Tyr-&gt;Asp (Y)</option>
        <option value="Tyr-&gt;Cys (Y)">Tyr-&gt;Cys (Y)</option>
        <option value="Tyr-&gt;Dha (Y)">Tyr-&gt;Dha (Y)</option>
        <option value="Tyr-&gt;Gln (Y)">Tyr-&gt;Gln (Y)</option>
        <option value="Tyr-&gt;Glu (Y)">Tyr-&gt;Glu (Y)</option>
        <option value="Tyr-&gt;Gly (Y)">Tyr-&gt;Gly (Y)</option>
        <option value="Tyr-&gt;His (Y)">Tyr-&gt;His (Y)</option>
        <option value="Tyr-&gt;Lys (Y)">Tyr-&gt;Lys (Y)</option>
        <option value="Tyr-&gt;Met (Y)">Tyr-&gt;Met (Y)</option>
        <option value="Tyr-&gt;Phe (Y)">Tyr-&gt;Phe (Y)</option>
        <option value="Tyr-&gt;Pro (Y)">Tyr-&gt;Pro (Y)</option>
        <option value="Tyr-&gt;Ser (Y)">Tyr-&gt;Ser (Y)</option>
        <option value="Tyr-&gt;Thr (Y)">Tyr-&gt;Thr (Y)</option>
        <option value="Tyr-&gt;Trp (Y)">Tyr-&gt;Trp (Y)</option>
        <option value="Tyr-&gt;Val (Y)">Tyr-&gt;Val (Y)</option>
        <option value="Tyr-&gt;Xle (Y)">Tyr-&gt;Xle (Y)</option>
        <option value="Ub-Br2 (C)">Ub-Br2 (C)</option>
        <option value="Ub-fluorescein (C)">Ub-fluorescein (C)</option>
        <option value="Ub-VME (C)">Ub-VME (C)</option>
        <option value="UgiJoullie (D)">UgiJoullie (D)</option>
        <option value="UgiJoullie (E)">UgiJoullie (E)</option>
        <option value="UgiJoullieProGly (D)">UgiJoullieProGly (D)</option>
        <option value="UgiJoullieProGly (E)">UgiJoullieProGly (E)</option>
        <option value="UgiJoullieProGlyProGly (D)">UgiJoullieProGlyProGly (D)</option>
        <option value="UgiJoullieProGlyProGly (E)">UgiJoullieProGlyProGly (E)</option>
        <option value="Unknown:162 (C-term)">Unknown:162 (C-term)</option>
        <option value="Unknown:162 (D)">Unknown:162 (D)</option>
        <option value="Unknown:162 (E)">Unknown:162 (E)</option>
        <option value="Unknown:162 (N-term)">Unknown:162 (N-term)</option>
        <option value="Unknown:177 (C-term)">Unknown:177 (C-term)</option>
        <option value="Unknown:177 (D)">Unknown:177 (D)</option>
        <option value="Unknown:177 (E)">Unknown:177 (E)</option>
        <option value="Unknown:177 (N-term)">Unknown:177 (N-term)</option>
        <option value="Unknown:210 (C-term)">Unknown:210 (C-term)</option>
        <option value="Unknown:210 (D)">Unknown:210 (D)</option>
        <option value="Unknown:210 (E)">Unknown:210 (E)</option>
        <option value="Unknown:210 (N-term)">Unknown:210 (N-term)</option>
        <option value="Unknown:216 (C-term)">Unknown:216 (C-term)</option>
        <option value="Unknown:216 (D)">Unknown:216 (D)</option>
        <option value="Unknown:216 (E)">Unknown:216 (E)</option>
        <option value="Unknown:216 (N-term)">Unknown:216 (N-term)</option>
        <option value="Unknown:234 (C-term)">Unknown:234 (C-term)</option>
        <option value="Unknown:234 (D)">Unknown:234 (D)</option>
        <option value="Unknown:234 (E)">Unknown:234 (E)</option>
        <option value="Unknown:234 (N-term)">Unknown:234 (N-term)</option>
        <option value="Unknown:248 (C-term)">Unknown:248 (C-term)</option>
        <option value="Unknown:248 (D)">Unknown:248 (D)</option>
        <option value="Unknown:248 (E)">Unknown:248 (E)</option>
        <option value="Unknown:248 (N-term)">Unknown:248 (N-term)</option>
        <option value="Unknown:250 (C-term)">Unknown:250 (C-term)</option>
        <option value="Unknown:250 (D)">Unknown:250 (D)</option>
        <option value="Unknown:250 (E)">Unknown:250 (E)</option>
        <option value="Unknown:250 (N-term)">Unknown:250 (N-term)</option>
        <option value="Unknown:302 (C-term)">Unknown:302 (C-term)</option>
        <option value="Unknown:302 (D)">Unknown:302 (D)</option>
        <option value="Unknown:302 (E)">Unknown:302 (E)</option>
        <option value="Unknown:302 (N-term)">Unknown:302 (N-term)</option>
        <option value="Unknown:306 (C-term)">Unknown:306 (C-term)</option>
        <option value="Unknown:306 (D)">Unknown:306 (D)</option>
        <option value="Unknown:306 (E)">Unknown:306 (E)</option>
        <option value="Unknown:306 (N-term)">Unknown:306 (N-term)</option>
        <option value="Unknown:420 (C-term)">Unknown:420 (C-term)</option>
        <option value="Unknown:420 (N-term)">Unknown:420 (N-term)</option>
        <option value="Val-&gt;Ala (V)">Val-&gt;Ala (V)</option>
        <option value="Val-&gt;Arg (V)">Val-&gt;Arg (V)</option>
        <option value="Val-&gt;Asn (V)">Val-&gt;Asn (V)</option>
        <option value="Val-&gt;Asp (V)">Val-&gt;Asp (V)</option>
        <option value="Val-&gt;Cys (V)">Val-&gt;Cys (V)</option>
        <option value="Val-&gt;Gln (V)">Val-&gt;Gln (V)</option>
        <option value="Val-&gt;Glu (V)">Val-&gt;Glu (V)</option>
        <option value="Val-&gt;Gly (V)">Val-&gt;Gly (V)</option>
        <option value="Val-&gt;His (V)">Val-&gt;His (V)</option>
        <option value="Val-&gt;Lys (V)">Val-&gt;Lys (V)</option>
        <option value="Val-&gt;Met (V)">Val-&gt;Met (V)</option>
        <option value="Val-&gt;Phe (V)">Val-&gt;Phe (V)</option>
        <option value="Val-&gt;Pro (V)">Val-&gt;Pro (V)</option>
        <option value="Val-&gt;Ser (V)">Val-&gt;Ser (V)</option>
        <option value="Val-&gt;Thr (V)">Val-&gt;Thr (V)</option>
        <option value="Val-&gt;Trp (V)">Val-&gt;Trp (V)</option>
        <option value="Val-&gt;Tyr (V)">Val-&gt;Tyr (V)</option>
        <option value="Val-&gt;Xle (V)">Val-&gt;Xle (V)</option>
        <option value="VFQQQTGG (K)">VFQQQTGG (K)</option>
        <option value="VIEVYQEQTGG (K)">VIEVYQEQTGG (K)</option>
        <option value="Withaferin (C)">Withaferin (C)</option>
        <option value="Xle-&gt;Ala (I)">Xle-&gt;Ala (I)</option>
        <option value="Xle-&gt;Ala (L)">Xle-&gt;Ala (L)</option>
        <option value="Xle-&gt;Arg (I)">Xle-&gt;Arg (I)</option>
        <option value="Xle-&gt;Arg (L)">Xle-&gt;Arg (L)</option>
        <option value="Xle-&gt;Asn (I)">Xle-&gt;Asn (I)</option>
        <option value="Xle-&gt;Asn (L)">Xle-&gt;Asn (L)</option>
        <option value="Xle-&gt;Asp (I)">Xle-&gt;Asp (I)</option>
        <option value="Xle-&gt;Asp (L)">Xle-&gt;Asp (L)</option>
        <option value="Xle-&gt;Cys (I)">Xle-&gt;Cys (I)</option>
        <option value="Xle-&gt;Cys (L)">Xle-&gt;Cys (L)</option>
        <option value="Xle-&gt;Gln (I)">Xle-&gt;Gln (I)</option>
        <option value="Xle-&gt;Gln (L)">Xle-&gt;Gln (L)</option>
        <option value="Xle-&gt;Glu (I)">Xle-&gt;Glu (I)</option>
        <option value="Xle-&gt;Glu (L)">Xle-&gt;Glu (L)</option>
        <option value="Xle-&gt;Gly (I)">Xle-&gt;Gly (I)</option>
        <option value="Xle-&gt;Gly (L)">Xle-&gt;Gly (L)</option>
        <option value="Xle-&gt;His (I)">Xle-&gt;His (I)</option>
        <option value="Xle-&gt;His (L)">Xle-&gt;His (L)</option>
        <option value="Xle-&gt;Lys (I)">Xle-&gt;Lys (I)</option>
        <option value="Xle-&gt;Lys (L)">Xle-&gt;Lys (L)</option>
        <option value="Xle-&gt;Met (I)">Xle-&gt;Met (I)</option>
        <option value="Xle-&gt;Met (L)">Xle-&gt;Met (L)</option>
        <option value="Xle-&gt;Phe (I)">Xle-&gt;Phe (I)</option>
        <option value="Xle-&gt;Phe (L)">Xle-&gt;Phe (L)</option>
        <option value="Xle-&gt;Pro (I)">Xle-&gt;Pro (I)</option>
        <option value="Xle-&gt;Pro (L)">Xle-&gt;Pro (L)</option>
        <option value="Xle-&gt;Ser (I)">Xle-&gt;Ser (I)</option>
        <option value="Xle-&gt;Ser (L)">Xle-&gt;Ser (L)</option>
        <option value="Xle-&gt;Thr (I)">Xle-&gt;Thr (I)</option>
        <option value="Xle-&gt;Thr (L)">Xle-&gt;Thr (L)</option>
        <option value="Xle-&gt;Trp (I)">Xle-&gt;Trp (I)</option>
        <option value="Xle-&gt;Trp (L)">Xle-&gt;Trp (L)</option>
        <option value="Xle-&gt;Tyr (I)">Xle-&gt;Tyr (I)</option>
        <option value="Xle-&gt;Tyr (L)">Xle-&gt;Tyr (L)</option>
        <option value="Xle-&gt;Val (I)">Xle-&gt;Val (I)</option>
        <option value="Xle-&gt;Val (L)">Xle-&gt;Val (L)</option>
        <option value="Xlink:B10621 (C)">Xlink:B10621 (C)</option>
        <option value="Xlink:BMOE (C)">Xlink:BMOE (C)</option>
        <option value="Xlink:BS2G[113] (K)">Xlink:BS2G[113] (K)</option>
        <option value="Xlink:BS2G[113] (Protein N-term)">Xlink:BS2G[113] (Protein N-term)</option>
        <option value="Xlink:BS2G[114] (K)">Xlink:BS2G[114] (K)</option>
        <option value="Xlink:BS2G[114] (Protein N-term)">Xlink:BS2G[114] (Protein N-term)</option>
        <option value="Xlink:BS2G[217] (K)">Xlink:BS2G[217] (K)</option>
        <option value="Xlink:BS2G[217] (Protein N-term)">Xlink:BS2G[217] (Protein N-term)</option>
        <option value="Xlink:BS2G[96] (K)">Xlink:BS2G[96] (K)</option>
        <option value="Xlink:BS2G[96] (Protein N-term)">Xlink:BS2G[96] (Protein N-term)</option>
        <option value="Xlink:BuUrBu[111] (K)">Xlink:BuUrBu[111] (K)</option>
        <option value="Xlink:BuUrBu[111] (Protein N-term)">Xlink:BuUrBu[111] (Protein N-term)</option>
        <option value="Xlink:BuUrBu[196] (K)">Xlink:BuUrBu[196] (K)</option>
        <option value="Xlink:BuUrBu[196] (Protein N-term)">Xlink:BuUrBu[196] (Protein N-term)</option>
        <option value="Xlink:BuUrBu[213] (K)">Xlink:BuUrBu[213] (K)</option>
        <option value="Xlink:BuUrBu[213] (Protein N-term)">Xlink:BuUrBu[213] (Protein N-term)</option>
        <option value="Xlink:BuUrBu[214] (K)">Xlink:BuUrBu[214] (K)</option>
        <option value="Xlink:BuUrBu[214] (Protein N-term)">Xlink:BuUrBu[214] (Protein N-term)</option>
        <option value="Xlink:BuUrBu[317] (K)">Xlink:BuUrBu[317] (K)</option>
        <option value="Xlink:BuUrBu[317] (Protein N-term)">Xlink:BuUrBu[317] (Protein N-term)</option>
        <option value="Xlink:BuUrBu[85] (K)">Xlink:BuUrBu[85] (K)</option>
        <option value="Xlink:BuUrBu[85] (Protein N-term)">Xlink:BuUrBu[85] (Protein N-term)</option>
        <option value="Xlink:DFDNB (K)">Xlink:DFDNB (K)</option>
        <option value="Xlink:DFDNB (N)">Xlink:DFDNB (N)</option>
        <option value="Xlink:DFDNB (Q)">Xlink:DFDNB (Q)</option>
        <option value="Xlink:DFDNB (R)">Xlink:DFDNB (R)</option>
        <option value="Xlink:DMP[122] (K)">Xlink:DMP[122] (K)</option>
        <option value="Xlink:DMP[122] (Protein N-term)">Xlink:DMP[122] (Protein N-term)</option>
        <option value="Xlink:DMP[139] (K)">Xlink:DMP[139] (K)</option>
        <option value="Xlink:DMP[139] (Protein N-term)">Xlink:DMP[139] (Protein N-term)</option>
        <option value="Xlink:DMP[140] (K)">Xlink:DMP[140] (K)</option>
        <option value="Xlink:DMP[140] (Protein N-term)">Xlink:DMP[140] (Protein N-term)</option>
        <option value="Xlink:DMP[154] (K)">Xlink:DMP[154] (K)</option>
        <option value="Xlink:DMP[154] (Protein N-term)">Xlink:DMP[154] (Protein N-term)</option>
        <option value="Xlink:DSS[138] (K)">Xlink:DSS[138] (K)</option>
        <option value="Xlink:DSS[138] (Protein N-term)">Xlink:DSS[138] (Protein N-term)</option>
        <option value="Xlink:DSS[155] (K)">Xlink:DSS[155] (K)</option>
        <option value="Xlink:DSS[155] (Protein N-term)">Xlink:DSS[155] (Protein N-term)</option>
        <option value="Xlink:DSS[156] (K)">Xlink:DSS[156] (K)</option>
        <option value="Xlink:DSS[156] (Protein N-term)">Xlink:DSS[156] (Protein N-term)</option>
        <option value="Xlink:DSS[259] (K)">Xlink:DSS[259] (K)</option>
        <option value="Xlink:DSS[259] (Protein N-term)">Xlink:DSS[259] (Protein N-term)</option>
        <option value="Xlink:DSSO[104] (K)">Xlink:DSSO[104] (K)</option>
        <option value="Xlink:DSSO[104] (Protein N-term)">Xlink:DSSO[104] (Protein N-term)</option>
        <option value="Xlink:DSSO[158] (K)">Xlink:DSSO[158] (K)</option>
        <option value="Xlink:DSSO[158] (Protein N-term)">Xlink:DSSO[158] (Protein N-term)</option>
        <option value="Xlink:DSSO[175] (K)">Xlink:DSSO[175] (K)</option>
        <option value="Xlink:DSSO[175] (Protein N-term)">Xlink:DSSO[175] (Protein N-term)</option>
        <option value="Xlink:DSSO[176] (K)">Xlink:DSSO[176] (K)</option>
        <option value="Xlink:DSSO[176] (Protein N-term)">Xlink:DSSO[176] (Protein N-term)</option>
        <option value="Xlink:DSSO[279] (K)">Xlink:DSSO[279] (K)</option>
        <option value="Xlink:DSSO[279] (Protein N-term)">Xlink:DSSO[279] (Protein N-term)</option>
        <option value="Xlink:DSSO[54] (K)">Xlink:DSSO[54] (K)</option>
        <option value="Xlink:DSSO[54] (Protein N-term)">Xlink:DSSO[54] (Protein N-term)</option>
        <option value="Xlink:DSSO[86] (K)">Xlink:DSSO[86] (K)</option>
        <option value="Xlink:DSSO[86] (Protein N-term)">Xlink:DSSO[86] (Protein N-term)</option>
        <option value="Xlink:DST[114] (K)">Xlink:DST[114] (K)</option>
        <option value="Xlink:DST[114] (Protein N-term)">Xlink:DST[114] (Protein N-term)</option>
        <option value="Xlink:DST[132] (K)">Xlink:DST[132] (K)</option>
        <option value="Xlink:DST[132] (Protein N-term)">Xlink:DST[132] (Protein N-term)</option>
        <option value="Xlink:DST[56] (K)">Xlink:DST[56] (K)</option>
        <option value="Xlink:DST[56] (Protein N-term)">Xlink:DST[56] (Protein N-term)</option>
        <option value="Xlink:DTBP[172] (K)">Xlink:DTBP[172] (K)</option>
        <option value="Xlink:DTBP[172] (Protein N-term)">Xlink:DTBP[172] (Protein N-term)</option>
        <option value="Xlink:DTBP[87] (K)">Xlink:DTBP[87] (K)</option>
        <option value="Xlink:DTBP[87] (Protein N-term)">Xlink:DTBP[87] (Protein N-term)</option>
        <option value="Xlink:DTSSP[174] (K)">Xlink:DTSSP[174] (K)</option>
        <option value="Xlink:DTSSP[174] (Protein N-term)">Xlink:DTSSP[174] (Protein N-term)</option>
        <option value="Xlink:DTSSP[192] (K)">Xlink:DTSSP[192] (K)</option>
        <option value="Xlink:DTSSP[192] (Protein N-term)">Xlink:DTSSP[192] (Protein N-term)</option>
        <option value="Xlink:DTSSP[88] (K)">Xlink:DTSSP[88] (K)</option>
        <option value="Xlink:DTSSP[88] (Protein N-term)">Xlink:DTSSP[88] (Protein N-term)</option>
        <option value="Xlink:EGS[115] (K)">Xlink:EGS[115] (K)</option>
        <option value="Xlink:EGS[115] (Protein N-term)">Xlink:EGS[115] (Protein N-term)</option>
        <option value="Xlink:EGS[226] (K)">Xlink:EGS[226] (K)</option>
        <option value="Xlink:EGS[226] (Protein N-term)">Xlink:EGS[226] (Protein N-term)</option>
        <option value="Xlink:EGS[244] (K)">Xlink:EGS[244] (K)</option>
        <option value="Xlink:EGS[244] (Protein N-term)">Xlink:EGS[244] (Protein N-term)</option>
        <option value="Xlink:SMCC[219] (C)">Xlink:SMCC[219] (C)</option>
        <option value="Xlink:SMCC[219] (K)">Xlink:SMCC[219] (K)</option>
        <option value="Xlink:SMCC[219] (Protein N-term)">Xlink:SMCC[219] (Protein N-term)</option>
        <option value="Xlink:SMCC[237] (C)">Xlink:SMCC[237] (C)</option>
        <option value="Xlink:SMCC[237] (K)">Xlink:SMCC[237] (K)</option>
        <option value="Xlink:SMCC[237] (Protein N-term)">Xlink:SMCC[237] (Protein N-term)</option>
        <option value="Xlink:SMCC[321] (C)">Xlink:SMCC[321] (C)</option>
        <option value="ZGB (K)">ZGB (K)</option>
        <option value="ZGB (N-term)">ZGB (N-term)</option>
        <option value="ZQG (K)">ZQG (K)</option>
        <expand macro="list_string_san" name="variable"/>
      </param>
      <param name="variable_max_per_peptide" argument="-modifications:variable_max_per_peptide" type="integer" value="2" label="Maximum number of residues carrying a variable modification per candidate peptide" help=""/>
    </section>
    <expand macro="adv_opts_macro">
      <param argument="-force" type="boolean" truevalue="true" falsevalue="false" checked="false" label="Overrides tool-specific checks" help=""/>
      <param argument="-test" type="hidden" value="False" label="Enables the test mode (needed for internal use only)" help="" optional="true">
        <expand macro="list_string_san" name="test"/>
      </param>
    </expand>
    <param name="OPTIONAL_OUTPUTS" type="select" optional="true" multiple="true" label="Optional outputs">
      <option value="ctd_out_FLAG">Output used ctd (ini) configuration file</option>
    </param>
  </inputs>
  <outputs>
    <collection type="list" name="out" label="${tool.name} on ${on_string}: out">
      <discover_datasets directory="out" recurse="true" format="idxml" pattern="__name__"/>
    </collection>
    <data name="ctd_out" format="xml" label="${tool.name} on ${on_string}: ctd">
      <filter>OPTIONAL_OUTPUTS is not None and "ctd_out_FLAG" in OPTIONAL_OUTPUTS</filter>
    </data>
  </outputs>
  <tests>
    <!-- TOPP_SpecLibSearcher_1 -->
    <test expect_num_outputs="2">
      <section name="adv_opts">
        <param name="force" value="false"/>
        <param name="test" value="true"/>
      </section>
      <conditional name="in_cond">
        <param name="in" value="SpecLibSearcher_1.mzML"/>
      </conditional>
      <param name="lib" value="SpecLibSearcher_1.MSP"/>
      <output_collection name="out" count="1"/>
      <param name="compare_function" value="ZhangSimilarityScore"/>
      <section name="precursor">
        <param name="mass_tolerance" value="3.0"/>
        <param name="mass_tolerance_unit" value="Da"/>
        <param name="min_charge" value="1"/>
        <param name="max_charge" value="5"/>
        <param name="isotopes" value="0 1"/>
      </section>
      <section name="fragment">
        <param name="mass_tolerance" value="10.0"/>
      </section>
      <section name="report">
        <param name="top_hits" value="10"/>
      </section>
      <section name="filter">
        <param name="remove_peaks_below_threshold" value="2.01"/>
        <param name="min_peaks" value="5"/>
        <param name="max_peaks" value="150"/>
        <param name="cut_peaks_below" value="1000"/>
      </section>
      <section name="modifications">
        <param name="variable_max_per_peptide" value="2"/>
      </section>
      <param name="OPTIONAL_OUTPUTS" value="ctd_out_FLAG"/>
      <output name="ctd_out" ftype="xml">
        <assert_contents>
          <is_valid_xml/>
        </assert_contents>
      </output>
      <assert_stdout>
        <has_text_matching expression="@EXECUTABLE@ took .* \(wall\), .* \(CPU\), .* \(system\), .* \(user\)(; Peak Memory Usage: 32 MB)?."/>
      </assert_stdout>
    </test>
  </tests>
  <help><![CDATA[Identifies peptide MS/MS spectra by spectral matching with a searchable spectral library.


For more information, visit https://openms.de/doxygen/release/3.1.0/html/TOPP_SpecLibSearcher.html]]></help>
  <expand macro="references"/>
</tool>