Commonly occurring product ions for PI(13:0/22:4(7Z,10Z,13Z,16Z))) (View full structure)
m/z
Ion Description
Structure (click to enlarge)
843.5029
Precursor ion [M-H]-
681.4501
Loss of inositol from [M-H]-
647.3202
Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
629.3096
Neutral loss of sn1 RCOOH group from [M-H]-
529.2419
Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
511.2314
Neutral loss of sn2 RCOOH group from [M-H]-
485.2674
Loss of sn1 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
467.2568
Neutral loss of sn1 RCOOH group and inositol from [M-H]-
367.1891
Loss of sn2 acyl chain as ketene (RCH=C=O) and inositol from [M-H]-
349.1786
Neutral loss of sn2 RCOOH group and inositol from [M-H]-
331.2643
sn2 RCOO- ion
315.0487
Glycerophosphoinositol -H2O
297.0381
Glycerophosphoinositol -2H2O
287.2744
Loss of CO2 from sn2 RCOO- ion (PUFA)
259.0225
Inositol phosphate ion
241.0119
Inositol phosphate ion - H2O
223.0013
Inositol phosphate ion - 2 H2O
213.1860
sn1 RCOO- ion
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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