 | C4X-14275 | N/A | Impurity | |
| Benserazide Impurity 5 |
| C4X-14276 | N/A | Impurity | |
| Benserazide Impurity 6 |
| C4X-14277 | N/A | Impurity | |
| Benserazide Impurity 7 |
| C4X-14278 | N/A | Impurity | |
| Benserazide Impurity 8 |
| C4X-14279 | N/A | Impurity | |
| Benserazide Impurity 9 |
 | C4X-14281 | 26116-56-3 | Impurity | |
| Dirithromycin EP impurity A |
 | C4X-14282 | 869485-36-9 | Impurity | |
| Dirithromycin EP impurity B |
 | C4X-14283 | 141262-14-8 | Impurity | |
| Dirithromycin EP Impurity C(Dirithromycin B) |
| C4X-14284 | N/A | Impurity | |
| Dirithromycin EP Impurity D(Dirithromycin C) |
| C4X-14285 | N/A | Impurity | |
| Dirithromycin EP Impurity E |
