Commonly occurring product ions for PG(18:0/18:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
777.5651Precursor ion [M-H]-
703.5283Loss of glycerol from precursor ion
511.3042Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
511.3042Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
493.2936Neutral loss of sn2 RCOOH group from [M-H]-
493.2936Neutral loss of sn1 RCOOH group from [M-H]-
437.2674Loss of sn2 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]-
437.2674Loss of sn1 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]-
419.2568Neutral loss of sn2 RCOOH group and glycerol from [M-H]-
419.2568Neutral loss of sn1 RCOOH group and glycerol from [M-H]-
283.2643sn2 RCOO- ion
283.2643sn1 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