| Macitentan Intermediate 01 | NA | Ax-MAC01 |
| 4-(6-prop-2-enoyloxyhexoxy)benzoic acid | 83883-26-5 | Ax-295 |
| Macitentan Intermediate 02 | NA | Ax-MAC02 |
| Sulfalene Impurity 2 | 115102-84-6 | Ax-IMP1689 |
| Macitentan Intermediate 03 | 1246922-88-2 | Ax-MAC03 |
| Sulfalene Impurity 3 | 75746-22-4 | Ax-IMP1690 |
| Sulfalene Impurity 4 | NA | Ax-IMP1691 |
| Macitentan | 441798-33-0 | Ax-MAC |
| Linezolid Impurity C | 168828-90-8 | Ax-IMP2836 |
| Oseltamivir Impurity D | 1346604-18-9 | Ax-IMP1699 |