Commonly occurring product ions for PG(20:2(11Z,14Z)/18:3(9Z,12Z,15Z))) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
795.5182Precursor ion [M-H]-
721.4814Loss of glycerol from precursor ion
535.3042Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
517.2936Neutral loss of sn2 RCOOH group from [M-H]-
505.2572Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
487.2466Neutral loss of sn1 RCOOH group from [M-H]-
461.2674Loss of sn2 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]-
443.2568Neutral loss of sn2 RCOOH group and glycerol from [M-H]-
431.2204Loss of sn1 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]-
413.2099Neutral loss of sn1 RCOOH group and glycerol from [M-H]-
307.2643sn1 RCOO- ion
277.2173sn2 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