Commonly occurring product ions for PI(15:0/18:2(9Z,12Z))) (View full structure)
| m/z | Ion Description | Structure (click to enlarge) |
|---|---|---|
| 819.5029 | Precursor ion [M-H]- |  |
| 657.4501 | Loss of inositol from [M-H]- |  |
| 595.2889 | Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]- |  |
| 577.2783 | Neutral loss of sn1 RCOOH group from [M-H]- |  |
| 557.2732 | Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]- |  |
| 539.2627 | Neutral loss of sn2 RCOOH group from [M-H]- |  |
| 433.2361 | Loss of sn1 acyl chain as ketene (RCH=C=O) and inositol from [M-H]- |  |
| 415.2255 | Neutral loss of sn1 RCOOH group and inositol from [M-H]- |  |
| 395.2204 | Loss of sn2 acyl chain as ketene (RCH=C=O) and inositol from [M-H]- |  |
| 377.2099 | Neutral loss of sn2 RCOOH group and inositol from [M-H]- |  |
| 315.0487 | Glycerophosphoinositol -H2O |  |
| 297.0381 | Glycerophosphoinositol -2H2O |  |
| 279.2330 | sn2 RCOO- ion |  |
| 259.0225 | Inositol phosphate ion |  |
| 241.2173 | sn1 RCOO- 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) |  |