Commonly occurring product ions for PE(21:0/20:4(5Z,8Z,11Z,14Z))) (View full structure)
| m/z | Ion Description | Structure (click to enlarge) |
|---|---|---|
| 808.5862 | Precursor ion [M-H]- |  |
| 522.3565 | Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]- |  |
| 504.3460 | Neutral loss of sn2 RCOOH group from [M-H]- |  |
| 500.2783 | Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]- |  |
| 482.2677 | Neutral loss of sn1 RCOOH group from [M-H]- |  |
| 325.3112 | sn1 RCOO- ion |  |
| 303.2330 | sn2 RCOO- ion |  |
| 259.2431 | Loss of CO2 from sn2 RCOO- ion (PUFA) |  |
| 152.9958 | Glycerol-3-phosphate ion with loss of H2O |  |
| 140.0118 | Ethanolamine phosphate ion |  |
| 122.0013 | Ethanolamine phosphate ion with loss of H2O |  |
| 96.9696 | H2PO4- ion (from phosphate) |  |
| 78.9591 | PO3- ion (from phosphate) |  |