Commonly occurring product ions for PG(18:0/20:5(5Z,8Z,11Z,14Z,17Z))) (View full structure)
| m/z | Ion Description | Structure (click to enlarge) |
|---|---|---|
| 795.5182 | Precursor ion [M-H]- |  |
| 721.4814 | Loss of glycerol from precursor ion |  |
| 529.2572 | Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]- |  |
| 511.3042 | Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]- |  |
| 511.2466 | Neutral loss of sn1 RCOOH group from [M-H]- |  |
| 493.2936 | Neutral loss of sn2 RCOOH group from [M-H]- |  |
| 455.2204 | Loss of sn1 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]- |  |
| 437.2674 | Loss of sn2 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]- |  |
| 437.2099 | Neutral loss of sn1 RCOOH group and glycerol from [M-H]- |  |
| 419.2568 | Neutral loss of sn2 RCOOH group and glycerol from [M-H]- |  |
| 301.2173 | sn2 RCOO- ion |  |
| 283.2643 | sn1 RCOO- ion |  |
| 257.2275 | Loss of CO2 from sn2 RCOO- ion (PUFA) |  |
| 245.0432 | Glycerophosphoglycerol ion |  |
| 227.0326 | Glycerophosphoglycerol ion -H2O |  |
| 209.0221 | Glycerophosphoglycerol ion -2H2O |  |
| 152.9958 | Glycerol-3-phosphate ion with loss of H2O |  |
| 96.9696 | H2PO4- ion (from phosphate) |  |
| 78.9591 | PO3- ion (from phosphate) |  |