 | C4X-159123 | 509074-26-4 | Impurity | |
| Parecoxib Sodium Impurity 23 |
| C4X-159124 | N/A | Impurity | |
| Parecoxib Sodium Impurity 24 |
 | C4X-159125 | 1884279-18-8 | Impurity | |
| Parecoxib Sodium Impurity 25 |
| C4X-159126 | N/A | Impurity | |
| Parecoxib Sodium Impurity 26 |
| C4X-159127 | N/A | Impurity | |
| Parecoxib Sodium Impurity 27 |
| C4X-159129 | 1709956-95-5 | Impurity | |
| Parecoxib Sodium Impurity 29 |
| C4X-15913 | N/A | Impurity | |
| Parecoxib sodium Impurity 3 |
 | C4X-159130 | 1373038-57-3 | Impurity | |
| Parecoxib Sodium Impurity 30 |
| C4X-159131 | N/A | Impurity | |
| Parecoxib Sodium Impurity 31 |
 | C4X-159132 | 181696-12-8 | Impurity | |
| Parecoxib Sodium Impurity 32 |
