| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-103939 | 923571-15-7 | Impurity | |
| Donepezil Impurity 39 | ||||
| C4X-103940 | 923571-16-8 | Impurity | |
| Donepezil Impurity 40 | ||||
 | C4X-103941 | 1034439-57-0 | Impurity | |
| Deoxydonepezil Hydrochloride | ||||
 | C4X-103942 | 120014-30-4 | Impurity | |
| Donepezil EP impurity A | ||||
| C4X-103943 | N/A | Impurity | |
| Donepezil Impurity 43 | ||||
| C4X-103944 | 1026443-48-0 | Impurity | |
| Donepezil Impurity 44 | ||||
| C4X-103945 | 844694-83-3 | Impurity | |
| Donepezil Impurity 45 | ||||
 | C4X-103946 | 1034439-43-4 | Impurity | |
| Donepezil Impurity 46 | ||||
| C4X-103947 | 36159-03-2 | Impurity | |
| Donepezil Impurity 47 | ||||
 | C4X-103948 | 4803-74-1 | Impurity | |
| Donepezil Impurity 48 | ||||
