Commonly occurring product ions for PI(30:0/32:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
1229.9881Precursor ion [M-H]-
1067.9352Loss of inositol from [M-H]-
795.5393Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
777.5287Neutral loss of sn1 RCOOH group from [M-H]-
767.5080Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
749.4974Neutral loss of sn2 RCOOH group from [M-H]-
633.4865Loss of sn1 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
615.4759Neutral loss of sn1 RCOOH group and inositol from [M-H]-
605.4552Loss of sn2 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
587.4446Neutral loss of sn2 RCOOH group and inositol from [M-H]-
479.4834sn2 RCOO- ion
451.4521sn1 RCOO- ion
315.0487Glycerophosphoinositol -H2O
297.0381Glycerophosphoinositol -2H2O
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