Commonly occurring product ions for PG(17:0/4:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
567.3304Precursor ion [M-H]-
497.2885Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
493.2936Loss of glycerol from precursor ion
479.2779Neutral loss of sn2 RCOOH group from [M-H]-
423.2517Loss of sn2 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]-
405.2412Neutral loss of sn2 RCOOH group and glycerol from [M-H]-
315.0851Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
297.0745Neutral loss of sn1 RCOOH group from [M-H]-
269.2486sn1 RCOO- ion
245.0432Glycerophosphoglycerol ion
241.0483Loss of sn1 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]-
227.0326Glycerophosphoglycerol ion -H2O
223.0377Neutral loss of sn1 RCOOH group and glycerol from [M-H]-
209.0221Glycerophosphoglycerol ion -2H2O
152.9958Glycerol-3-phosphate ion with loss of H2O
96.9696H2PO4- ion (from phosphate)
87.0452sn2 RCOO- ion
78.9591PO3- ion (from phosphate)
Note: Structures of product ions may represent one of a number of possible isobaric molecules in some cases