 | C4X-173260 | 13833-89-1 | Impurity | |
| Piperacillin EP Impurity I |
 | C4X-17327 | 63422-71-9 | Impurity | |
| Piperacillin Sodium EP Impurity G |
 | C4X-17328 | N/A | Impurity | |
| Piperacillin Impurity 8 |
 | C4X-17331 | 504-29-0 | Impurity | |
| Piroxicam EP Impurity A |
 | C4X-173310 | 35511-15-0 | Impurity | |
| Piroxicam EP Impurity J |
 | C4X-173311 | 24683-26-9 | Impurity | |
| Piroxicam EP Impurity K(Meloxicam EP Impurity A) |
 | C4X-173312 | 118854-48-1 | Impurity | |
| Piroxicam EP Impurity L(Meloxicam EP Impurity F) |
| C4X-17332 | 65897-46-3 | Impurity | |
| Piroxicam EP Impurity B |
| C4X-173322 | 88741-92-8 | Impurity | |
| Piroxicam impurity 22 |
| C4X-173323 | 88741-92-8 (free acid) | Impurity | |
| Piroxicam Impurity 23 Disodium Salt |
