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Mass defects for common organic elements occurring in biotransformation reactions
| Element | Nominal atomic mass (Da) | Mass defect (mDa) |
|---|---|---|
| H | 1 | +7.825 |
| C | 12 | 0 |
| N | 14 | +3.074 |
| O | 16 | –5.085 |
| F | 19 | –1.597 |
| Si | 28 | –23.073 |
| P | 31 | –26.238 |
| S | 32 | –27.929 |
| Cl | 35 | –31.147 |
| Br | 79 | –81.662 |
| I | 127 | –95.532 |
