Commonly occurring product ions for PI(O-14:0/18:2(2E,4E)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
791.5080Precursor ion [M-H]-
629.4552Loss of inositol from [M-H]-
529.2783Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
511.2678Neutral loss of sn2 RCOOH group from [M-H]-
367.2255Loss of sn2 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
349.2149Neutral loss of sn2 RCOOH group and inositol from [M-H]-
315.0487Glycerophosphoinositol -H2O
297.0381Glycerophosphoinositol -2H2O
279.2330sn2 RCOO- ion
259.0225Inositol phosphate ion
241.0119Inositol phosphate ion - H2O
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