 | C4X-15053 | 14897-39-3 | Impurity | |
| Rifaximin EP Impurity C |
 | C4X-15054 | N/A | Impurity | |
| Rifaximin EP Impurity D |
 | C4X-15056 | 14487-05-9 | Impurity | |
| Rifaximin EP Impurity F |
 | C4X-15057 | 80621-76-7 | Impurity | |
| Rifaximin EP Impurity G |
| C4X-150610 | 92496-64-5 | Impurity | |
| Cyproheptadine Impurity 10 |
 | C4X-15062 | 2222-33-5 | Impurity | |
| Cyproheptadine Impurity 2 |
 | C4X-15063 | 3967-32-6 | Impurity | |
| Cyproheptadine EP Impurity C |
 | C4X-15064 | 256-81-5 | Impurity | |
| Cyproheptadine USP Related Compound A |
 | C4X-15065 | 54191-04-7 | Impurity | |
| Cyproheptadine Impurity 5 |
| C4X-15066 | 4046-24-6 | Impurity | |
| Cyproheptadine EP Impurity C Hydrochloride |
