 | C4X-149248 | N/A | Impurity | |
| Cefprozil (Z)-isomer Impurity 48 |
| C4X-14927 | N/A | Impurity | |
| Cefprozil EP Impurity G |
| C4X-14929 | N/A | Impurity | |
| Cefprozil EP Impurity I |
 | C4X-149312 | 26451-92-3 | Impurity | |
| Naloxone Hydrochloride EP Impurity D |
| C4X-149313 | 33522-95-1 | Impurity | |
| Naloxone EP Impurity A |
 | C4X-14932 | 1352085-46-1 | Impurity | |
| Naloxone Hydrochloride EP Impurity B |
 | C4X-14933 | 2139253-68-0 | Impurity | |
| Naloxone Hydrochloride EP Impurity C |
 | C4X-14935 | 211738-08-8 | Impurity | |
| Naloxone Hydrochloride EP Impurity E |
 | C4X-14936 | 2139253-69-1 | Impurity | |
| Naloxone Hydrochloride EP Impurity F |
 | C4X-14937 | 70866-64-7 | Impurity | |
| Naloxone EP Impurity G |
