 | C4X-130311 | 425365-66-8 | Impurity | |
| Roxithromycin EP Impurity I |
 | C4X-130312 | N/A | Impurity | |
| Roxithromycin EP Impurity K |
| C4X-130314 | N/A | Impurity | |
| Roxithromycin Impurity 14 |
 | C4X-130315 | 89268-03-1 | Impurity | |
| Roxithromycin Impurity 15 |
| C4X-130316 | N/A | Impurity | |
| Roxithromycin Impurity 16 |
| C4X-130317 | 74498-88-7 | Impurity | |
| Roxithromycin Impurity 17 |
| C4X-130318 | 67796-27-4 | Impurity | |
| Roxithromycin Impurity 18 |
 | C4X-130319 | 1460313-73-8 | Impurity | |
| Roxithromycin Impurity 19 |
 | C4X-13032 | 214902-82-6 | Impurity | |
| Roxithromycin EP Impurity B |
| C4X-130320 | 1460313-65-8 | Impurity | |
| Roxithromycin Impurity 20 |
