 | C4X-159172 | N/A | Impurity | |
| Parecoxib Impurity 72 |
| C4X-159173 | N/A | Impurity | |
| Parecoxib Impurity 73 |
 | C4X-15918 | 181696-35-5 | Impurity | |
| Parecoxib sodium Impurity 8 |
 | C4X-15919 | 1373038-56-2 | Impurity | |
| Parecoxib sodium Impurity 9 |
 | C4X-15921 | 5534-13-4 | Impurity | |
| Clobetasol Propionate EP Impurity A |
 | C4X-159210 | 1486466-31-2 | Impurity | |
| Clobetasol Propionate EP Impurity J |
 | C4X-159211 | 75883-07-7 | Impurity | |
| Clobetasol Propionate EP Impurity K |
 | C4X-159212 | 3109-01-1 | Impurity | |
| Clobetasol Propionate Impurity 12 |
 | C4X-159213 | 1356190-17-4 | Impurity | |
| Clobetasol Propionate EP Impurity B |
| C4X-159214 | N/A | Impurity | |
| Clobetasol Propionate EP Impurity E |
