Commonly occurring product ions for PG(16:1(9Z)/20:0)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
775.5495Precursor ion [M-H]-
701.5127Loss of glycerol from precursor ion
539.3355Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
521.3249Neutral loss of sn1 RCOOH group from [M-H]-
481.2572Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
465.2987Loss of sn1 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]-
463.2466Neutral loss of sn2 RCOOH group from [M-H]-
447.2881Neutral loss of sn1 RCOOH group and glycerol from [M-H]-
407.2204Loss of sn2 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]-
389.2099Neutral loss of sn2 RCOOH group and glycerol from [M-H]-
311.2956sn2 RCOO- ion
253.2173sn1 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