I am designing database of different file formats exited in proteomics
(mzML,
wiff, pepXML). My target is finding monoisotopic mass from different
files under different run/scan
with meta-data and store them in the database.

I have gone through the documentation of mzML but couldn't really find
term
monoisotopic mass, different term have  been used in mzML which I am
pretty
sure. I am went through different mzML samples and try to understand
the
element hierarchy. So what term denotes monoisotopic mass weight in
mzML?

Element <run> -> <spectrumList> -> <spectrum> -> <precursorList> ->
<selectedIonList> -> <selectedIon>

<selectedIonList count="1">
  <selectedIon>
    <cvParam cvRef="MS" accession="MS:1000040" name="m/z"
value="445.34"/>
    <cvParam cvRef="MS" accession="MS:1000042" name="intensity"
value="120053"/>
    <cvParam cvRef="MS" accession="MS:1000041" name="charge state"
value="2"/>
  ...
</selectedIonList>


I have delivered by problem in psi-ms-dev and spctools group but
couldn't come
up with concrete solution. Can someone clear me the term?

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