Commonly occurring product ions for PG(P-20:0/17:2(9Z,12Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
771.5546Precursor ion [M-H]-
697.5178Loss of glycerol from precursor ion
523.3405Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
505.3300Neutral loss of sn2 RCOOH group from [M-H]-
449.3038Loss of sn2 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]-
431.2932Neutral loss of sn2 RCOOH group and glycerol from [M-H]-
265.2173sn2 RCOO- ion
245.0432Glycerophosphoglycerol ion
227.0326Glycerophosphoglycerol ion -H2O
209.0221Glycerophosphoglycerol ion -2H2O
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