Commonly occurring product ions for PA(16:1(7Z)/26:1(5Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
783.5909Precursor ion [M-H]-
547.3769Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
529.3664Neutral loss of sn1 RCOOH group from [M-H]-
407.2204Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
393.3738sn2 RCOO- ion
389.2099Neutral loss of sn2 RCOOH group from [M-H]-
253.2173sn1 RCOO- ion
171.0064Glycerol-3-phosphate 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