Commonly occurring product ions for PS(16:1(7Z)/34:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
984.7638Precursor ion [M-H]-
897.7318Loss of serine from precursor ion
661.5178Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
643.5072Neutral loss of sn1 RCOOH group and serine from [M-H]-
507.5147sn2 RCOO- ion
407.2204Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
389.2099Neutral loss of sn2 RCOOH group and serine from [M-H]-
253.2173sn1 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