Commonly occurring product ions for PI(17:0/38:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
1131.8785Precursor ion [M-H]-
969.8257Loss of inositol from [M-H]-
879.6332Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
861.6226Neutral loss of sn1 RCOOH group from [M-H]-
717.5804Loss of sn1 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
699.5698Neutral loss of sn1 RCOOH group and inositol from [M-H]-
585.3045Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
567.2940Neutral loss of sn2 RCOOH group from [M-H]-
563.5773sn2 RCOO- ion
423.2517Loss of sn2 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
405.2412Neutral loss of sn2 RCOOH group and inositol from [M-H]-
315.0487Glycerophosphoinositol -H2O
297.0381Glycerophosphoinositol -2H2O
269.2486sn1 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