Commonly occurring product ions for PI(O-18:0/20:4(5Z,8Z,11Z,13E)) (View full structure)
| m/z | Ion Description | Structure (click to enlarge) |
|---|---|---|
| 871.5706 | Precursor ion [M-H]- |  |
| 709.5178 | Loss of inositol from [M-H]- |  |
| 585.3409 | Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]- |  |
| 567.3304 | Neutral loss of sn2 RCOOH group from [M-H]- |  |
| 423.2881 | Loss of sn2 acyl chain as ketene (RCH=C=O) and inositol from [M-H]- |  |
| 405.2775 | Neutral loss of sn2 RCOOH group and inositol from [M-H]- |  |
| 315.0487 | Glycerophosphoinositol -H2O |  |
| 303.2330 | sn2 RCOO- ion |  |
| 297.0381 | Glycerophosphoinositol -2H2O |  |
| 259.2431 | 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 |  |
| 152.9958 | Glycerol-3-phosphate ion with loss of H2O |  |
| 96.9696 | H2PO4- ion (from phosphate) |  |
| 78.9591 | PO3- ion (from phosphate) |  |