Commonly occurring product ions for PS(38:0/22:5(4Z,7Z,10Z,13Z,16Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
1116.8577Precursor ion [M-H]-
1029.8257Loss of serine from precursor ion
717.5804Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
699.5698Neutral loss of sn2 RCOOH group and serine from [M-H]-
563.5773sn1 RCOO- ion
483.2517Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
465.2412Neutral loss of sn1 RCOOH group and serine from [M-H]-
329.2486sn2 RCOO- ion
285.2588Loss of CO2 from sn2 RCOO- ion (PUFA)
152.9958Glycerol-3-phosphate ion with loss of H2O
96.9696H2PO4- ion (from phosphate)
78.9591PO3- ion (from phosphate)
Note: Structures of product ions may represent one of a number of possible isobaric molecules in some cases