Commonly occurring product ions for PI(18:2(9Z,12Z)/22:0)) (View full structure)
m/z
Ion Description
Structure (click to enlarge)
917.6125
Precursor ion [M-H]-
755.5596
Loss of inositol from [M-H]-
655.3828
Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
637.3722
Neutral loss of sn1 RCOOH group from [M-H]-
595.2889
Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
577.2783
Neutral loss of sn2 RCOOH group from [M-H]-
493.3300
Loss of sn1 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
475.3194
Neutral loss of sn1 RCOOH group and inositol from [M-H]-
433.2361
Loss of sn2 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
415.2255
Neutral loss of sn2 RCOOH group and inositol from [M-H]-
339.3269
sn2 RCOO- ion
315.0487
Glycerophosphoinositol -H2O
297.0381
Glycerophosphoinositol -2H2O
279.2330
sn1 RCOO- ion
259.0225
Inositol phosphate ion
241.0119
Inositol phosphate ion - H2O
223.0013
Inositol phosphate ion - 2 H2O
152.9958
Glycerol-3-phosphate ion with loss of H2O
96.9696
H2PO4- ion (from phosphate)
78.9591
PO3- ion (from phosphate)
Note: Structures of product ions may represent one of a number of possible isobaric molecules in some cases
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