 | C4X-189927 | N/A | Impurity | |
| Benzylpenicillin Impurity 27 |
| C4X-189928 | 4052-54-4 | Impurity | |
| Benzylpenicillin Impurity 28 |
 | C4X-189929 | 58678-43-6 | Impurity | |
| Benzylpenicillin Impurity 29 |
| C4X-189930 | 525-94-0 | Impurity | |
| Benzylpenicillin Impurity 30 |
| C4X-189931 | N/A | Impurity | |
| Benzylpenicillin Impurity 31 |
| C4X-189934 | 56609-07-5 | Impurity | |
| Benzylpenicillin Impurity 34 |
| C4X-189935 | N/A | Impurity | |
| Benzylpenicillin Impurity 35 |
| C4X-189936 | 87-53-6 | Impurity | |
| Penicillanic Acid |
| C4X-189937 | 4027-63-8 | Impurity | |
| Penicillanic Acid Potassium |
 | C4X-189938 | 4027-62-7 | Impurity | |
| Penicillanic Acid Sodium Salt |
