Commonly occurring product ions for PI(18:3(9Z,12Z,15Z)/18:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
859.5342Precursor ion [M-H]-
697.4814Loss of inositol from [M-H]-
599.3202Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
593.2732Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
581.3096Neutral loss of sn1 RCOOH group from [M-H]-
575.2627Neutral loss of sn2 RCOOH group from [M-H]-
437.2674Loss of sn1 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
431.2204Loss of sn2 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
419.2568Neutral loss of sn1 RCOOH group and inositol from [M-H]-
413.2099Neutral loss of sn2 RCOOH group and inositol from [M-H]-
315.0487Glycerophosphoinositol -H2O
297.0381Glycerophosphoinositol -2H2O
283.2643sn2 RCOO- ion
277.2173sn1 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