Commonly occurring product ions for PS(18:0/18:2(9Z,12Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
786.5291Precursor ion [M-H]-
699.4970Loss of serine from precursor ion
437.2674Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
433.2361Loss 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]-
415.2255Neutral loss of sn1 RCOOH group and serine from [M-H]-
283.2643sn1 RCOO- ion
279.2330sn2 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