| Famotidine Impurity D | 76824-16-3 | Ax-IMP2128 |
| Pemetrexed EP impurity B | 1802552-04-0 | Ax-IMP2026 |
| Famotidine Impurity F | 107880-74-0 | Ax-IMP2129 |
| Pemetrexed EP impurity C | 1802552-16-4 | Ax-IMP2027 |
| Famotidine Impurity I | 1020719-36-1 | Ax-IMP2130 |
| Pemetrexed Process Impurity 1 | NA | Ax-IMP2028 |
| Famotidine Impurity J | 76824-14-1 | Ax-IMP2131 |
| Pemetrexed Process Impurity 2 | NA | Ax-IMP2029 |
| Letrozole Monoacid Impurity | NA | Ax-IMP2119 |
| Fenofibrate Impurity D | 42019-07-8 | Ax-IMP2030 |