| Vardenafil Process Impurity 6 | 1417529-54-4 | Ax-IMP1619 |
| Vardenafil Process Impurity 7 | 1417529-56-6 | Ax-IMP1620 |
| Vardenafil Impurity 1 | 1417529-67-9 | Ax-IMP1617 |
| Vardenafil Impurity 2 | 1417529-69-1 | Ax-IMP1623 |
| Artemisinin Process Impurity 2 | 1267472-35-4 | Ax-IMP1627 |
| Artemisitene Impurity | 101020-89-7 | Ax-IMP1624 |
| 9-epi-artemisinin | 113472-97-2 | Ax-IMP1625 |
| Dihydro Artemisinic acid | 85031-59-0 | Ax-IMP1628 |
| Artemesinin Mixed anhydride | 1267472-33-2 | Ax-IMP1629 |
| Arteannuin H | 207446-83-1 | Ax-IMP1630 |