Commonly occurring product ions for PS(14:0/15:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
692.4508Precursor ion [M-H]-
605.4188Loss of serine from precursor ion
395.2204Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
381.2048Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
377.2099Neutral loss of sn1 RCOOH group and serine from [M-H]-
363.1942Neutral loss of sn2 RCOOH group and serine from [M-H]-
241.2173sn2 RCOO- ion
227.2017sn1 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