Commonly occurring product ions for PI(20:3(8Z,11Z,14Z)/14:0)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
831.5029Precursor ion [M-H]-
669.4501Loss of inositol from [M-H]-
621.3045Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
603.2940Neutral loss of sn2 RCOOH group from [M-H]-
543.2576Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
525.2470Neutral loss of sn1 RCOOH group from [M-H]-
459.2517Loss of sn2 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
441.2412Neutral loss of sn2 RCOOH group and inositol from [M-H]-
381.2048Loss of sn1 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
363.1942Neutral loss of sn1 RCOOH group and inositol from [M-H]-
315.0487Glycerophosphoinositol -H2O
305.2486sn1 RCOO- ion
297.0381Glycerophosphoinositol -2H2O
259.0225Inositol phosphate ion
241.0119Inositol phosphate ion - H2O
227.2017sn2 RCOO- ion
223.0013Inositol phosphate ion - 2 H2O
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