| Sitagliptin Triazole Impurity | 762240-92-6 | Ax-IMP478 |
| Sitagliptin Enamine Impurity | 767340-03-4 | Ax-IMP477 |
| Trimetazidine Impurity A | 52146-35-7 | Ax-IMP509 |
| Trimetazidine Impurity B | 1257-19-8 | Ax-IMP510 |
| Trimetazidine Impurity C | 2103-57-3 | Ax-IMP511 |
| Trimetazidine Impurity D | 71989-96-3 | Ax-IMP512 |
| Trimetazidine Impurity F | 113698-83-2 | Ax-IMP513 |
| Trimetazidine Impurity H | 53531-01-4 | Ax-IMP514 |
| Piroxicam EP Impurity A | 504-29-0 | Ax-IMP516 |
| Piroxicam EP Impurity F | 76508-37-7 | Ax-IMP517 |