| Amlodipine Impurity 20 | 34148-67-9 | Ax-IMP2224 |
| 2-isopropyl-1,4-dimethylbenzene | 4132-72-3 | Ax-381 |
| Trihexyphenidyl Impurity A | 73-63-2 | Ax-IMP2223 |
| 1H-Indene, 2,3-dihydro-1,3-dimethyl- | 4175-53-5 | Ax-380 |
| Sitagliptin Impurity 1 | 1204818-19-8 | Ax-IMP2222 |
| Phenylbutane Impurity | 1608-03-3 | Ax-IMP1512 |
| Sitagliptin N-Boc Impurity 2 | 486460-00-8 | Ax-IMP2221 |
| Silacyclobutane Impurity | 198066-58-9 | Ax-IMP1511 |
| Sitagliptin N-Boc Impurity | 486460-23-5 | Ax-IMP2220 |
| Dimethyl amine Impurity | 26153-88-8 | Ax-IMP1510 |