| Ethionamide Process Impurity 1 | 13341-18-9 | Ax-IMP1593 |
| Febuxostat Intermediate II | 161797-99-5 | Ax-IMP2232 |
| Ethionamide Process Impurity 2 | 769092-24-2 | Ax-IMP1596 |
| Febuxostat Impurity VIII | 161798-03-4 | Ax-IMP2232 |
| Rosvastatin Process impurity 1 | 160009-35-8 | Ax-IMP1533 |
| Febuxostat Process Impurity 4 | 144060-97-9 | Ax-IMP2230 |
| Rosvastatin Process impurity 2 | 160009-36-9 | Ax-IMP1534 |
| Febuxostat Impurity IV | NA | Ax-IMP2229 |
| Clomiphene impurity F | 47648-28-2 | Ax-IMP1529 |
| Febuxostat Impurity V | 1350352-70-3 | Ax-IMP2228 |