 | C4X-140516 | 138169-63-8 | Impurity | |
| Metronidazole Impurity 16 |
 | C4X-140518 | 113385-77-6 | Impurity | |
| Metronidazole Impurity 18 |
 | C4X-14052 | 3034-38-6 | Impurity | |
| Metronidazole EP Impurity B |
 | C4X-140520 | 19765-12-9 | Impurity | |
| Metronidazole Impurity 20 |
 | C4X-140522 | 542-05-2 | Impurity | |
| Metronidazole Impurity 22 |
| C4X-140523 | N/A | Impurity | |
| Metronidazole impurity 23 |
 | C4X-140524 | 3034-42-2 | Impurity | |
| Metronidazole Impurity 24 |
| C4X-140525 | 16156-93-7 | Impurity | |
| Metronidazole Impurity 25 |
| C4X-140526 | 5006-79-1 | Impurity | |
| Metronidazole Impurity 26 |
| C4X-140527 | N/A | Impurity | |
| Metronidazole Impurity 27 |
