| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-10615 | N/A | Impurity | |
| Istradefylline Impurity 5 | ||||
| C4X-10616 | N/A | Impurity | |
| Istradefylline Impurity 6 | ||||
| C4X-10617 | N/A | Impurity | |
| Istradefylline Impurity 7 | ||||
| C4X-10618 | N/A | Impurity | |
| Istradefylline Impurity 8 | ||||
| C4X-10619 | N/A | Impurity | |
| Istradefylline Impurity 9 | ||||
 | C4X-10621 | 1357477-99-6 | Impurity | |
| Edaravone Impurity 1 | ||||
| C4X-106210 | 710307-89-4 | Impurity | |
| Edaravone Impurity 10 | ||||
| C4X-106211 | N/A | Impurity | |
| Edaravone Impurity 11 | ||||
| C4X-106212 | 2061958-41-4 | Impurity | |
| Edaravone Impurity 12 | ||||
| C4X-106213 | 76407-98-2 | Impurity | |
| Edaravone Impurity 13 | ||||
