| Letrozole Diacid Impurity | NA | Ax-IMP2120 |
| Fenofibrate Impurity E | 42019-08-9 | Ax-IMP2031 |
| Letrozole N-Oxide Impurity | NA | Ax-IMP2121 |
| Trimethoprim Related Compound B | 30806-86-1 | Ax-IMP2032 |
| Formyl Febuxostat | 144060-62-8 | Ax-IMP2125 |
| Trimethoprim Related Compound A | 60729-91-1 | Ax-IMP2033 |
| Febuxostat Methyl Ester | 923942-34-1 | Ax-IMP2123 |
| Oxytetracycline EP Impurity A | 14206-58-7 | Ax-IMP2034 |
| Febuxostat Process Impurity 3 | NA | Ax-IMP2124 |
| Doxazosin Impurity G | 60547-97-9 | Ax-IMP2035 |