 | C4X-21533 | N/A | Impurity | |
| Nifuroxazide EP Impurity E |
 | C4X-21534 | 112537-96-9 | Impurity | |
| Nifuroxazide EP Impurity D |
 | C4X-21541 | 246021-75-0 | Impurity | |
| 6-Deoxypenciclovir hydrochloride |
 | C4X-21551 | 100-71-0 | Impurity | |
| Dimetindene EP Impurity A |
 | C4X-21552 | 92039-35-5 | Impurity | |
| Dimetindene EP Impurity B HCl |
| C4X-21553 | 92726-29-9 | Impurity | |
| Dimetindene EP Impurity C |
 | C4X-21554 | 1613-23-6 | Impurity | |
| Dimetindene EP Impurity D |
 | C4X-21561 | 90877-51-3 | Impurity | |
| Thiotepa Impurity 1 |
 | C4X-21562 | 121258-29-5 | Impurity | |
| Thiotepa Impurity 2 |
 | C4X-21563 | 14056-57-6 | Impurity | |
| Thiotepa Impurity 3 |
