Commonly occurring product ions for PS(18:0/18:3(9Z,12Z,15Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
784.5134Precursor ion [M-H]-
697.4814Loss of serine from precursor ion
437.2674Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
431.2204Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
419.2568Neutral loss of sn2 RCOOH group and serine from [M-H]-
413.2099Neutral loss of sn1 RCOOH group and serine from [M-H]-
283.2643sn1 RCOO- ion
277.2173sn2 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