| Dalfampridine impurity | 22236-91-5 | Ax-IMP1397 |
| 1,1,3-Trichloroacetone | 921-03-9 | Ax-880 |
| Apixaban Impurity | 99585-01-0 | Ax-IMP1396 |
| 2-(2-(2-(2-hydroxyethoxy)ethoxy)ethoxy)-1-tosylethan-1-ol | 77544-60-6 | Ax-900 |
| Piracetam Process Impurity | 52928-63-9 | Ax-IMP1394 |
| 2-(2-(2-(2-azidoethoxy)ethoxy)ethoxy)ethan-1-ol | 86770-67-4 | Ax-901 |
| Piracetam impurity D | 53934-76-2 | Ax-IMP1395 |
| 3,4-diaminobenzenethiol | 655247-00-0 | Ax-902 |
| Piracetam Impurity B | 59776-88-4 | Ax-IMP1392 |
| 4-amino-3-nitrobenzenethiol | 80983-47-7 | Ax-903 |