Commonly occurring product ions for PS(29:0/20:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
972.7638Precursor ion [M-H]-
885.7318Loss of serine from precursor ion
591.4395Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
573.4290Neutral loss of sn2 RCOOH group and serine from [M-H]-
465.2987Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
447.2881Neutral loss of sn1 RCOOH group and serine from [M-H]-
437.4364sn1 RCOO- ion
311.2956sn2 RCOO- ion
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