| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-107773 | N/A | Impurity | |
| Entecavir Impurity 73 | ||||
| C4X-107774 | N/A | Impurity | |
| Entecavir Impurity 74 | ||||
| C4X-107775 | 701278-13-9 | Impurity | |
| Entecavir Impurity 75 | ||||
| C4X-107776 | N/A | Impurity | |
| Entecavir Impurity 76 (Racemic mixture) | ||||
 | C4X-10778 | 1367369-78-5 | Impurity | |
| Entecavir EP Impurity A | ||||
 | C4X-10779 | 1367369-76-3 | Impurity | |
| "(1R,3R,4R)-Entecavir" | ||||
| C4X-10781 | N/A | Impurity | |
| Pidotimod Impurity 1 | ||||
| C4X-107810 | N/A | Impurity | |
| Pidotimod Impurity 10 | ||||
| C4X-107811 | N/A | Impurity | |
| Pidotimod Impurity 11 | ||||
 | C4X-107812 | 135124-63-9 | Impurity | |
| Pidotimod Impurity 12 | ||||
