 | C4X-144321 | N/A | Impurity | |
| Ampicillin Impurity 21 |
| C4X-144322 | 4493-18-9 | Impurity | |
| Ampicillin Impurity 22 |
| C4X-144323 | N/A | Impurity | |
| Ampicillin Impurity 23 |
 | C4X-144326 | 73200-73-4 | Impurity | |
| Ampicillin EP Impurity H |
| C4X-144327 | N/A | Impurity | |
| Ampicillin Impurity 27 ?Mixture of Diastereoisomer? |
| C4X-144328 | N/A | Impurity | |
| Ampicillin EP Impurity M Disodium Salt |
| C4X-144329 | N/A | Impurity | |
| Ampicillin Impurity 29 |
| C4X-14433 | 49841-96-5 | Impurity | |
| Ampicillin EP Impurity C(Isomeric mixture1) |
| C4X-144331 | N/A | Impurity | |
| Ampicillin Impurity 31 |
| C4X-144332 | N/A | Impurity | |
| Ampicillin Impurity S |
