Commonly occurring product ions for PG(O-20:0/15:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
749.5702Precursor ion [M-H]-
675.5334Loss of glycerol from precursor ion
525.3562Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
507.3456Neutral loss of sn2 RCOOH group from [M-H]-
451.3194Loss of sn2 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]-
433.3088Neutral loss of sn2 RCOOH group and glycerol from [M-H]-
245.0432Glycerophosphoglycerol ion
241.2173sn2 RCOO- 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