| Sumatriptan Related Compound A | 545338-89-4 | Ax-IMP646 |
| Sumatriptan Related Compound B | 88919-51-1 | Ax-IMP647 |
| Sumatriptan Related Compound C | NA | Ax-IMP648 |
| Sumatriptan Related Compound D | 212069-94-8 | Ax-IMP649 |
| Sumatriptan Related Compound E | 88919-22-6 | Ax-IMP650 |
| Sumatriptan Related Compound H | 1391052-59-7 | Ax-IMP651 |
| Bepotastine Impurity B | 125602-70-2(base) ; 210095-48-0(Salt) | Ax-IMP644 |
| Febuxostat Ethyl Ester | 160844-75-7 | Ax-IMP642 |
| Febuxostat Isopropyl Ether Analog | 144060-52-6 | Ax-IMP639 |
| Febuxostat Dicarboxylic Acid Impurity | 1239233-87-4 | Ax-IMP638 |