| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-162927 | 6330-25-2 | Impurity | |
| Entacapone Impurity 27 | ||||
 | C4X-162928 | 2450-26-2 | Impurity | |
| Entacapone Impurity 28 | ||||
 | C4X-162929 | 2454-72-0 | Impurity | |
| Entacapone Impurity 29 | ||||
 | C4X-16293 | 160391-70-8 | Impurity | |
| Entacapone Impurity 3 | ||||
 | C4X-162930 | 148-53-8 | Impurity | |
| Entacapone Impurity 30 | ||||
 | C4X-16294 | 857629-79-9 | Impurity | |
| Entacapone EP Impurity D | ||||
 | C4X-162940 | 140647-01-4 | Impurity | |
| Entacapone impurity 40 | ||||
 | C4X-162948 | 89942-87-0 | Impurity | |
| Entacapone impurity 48 | ||||
 | C4X-16297 | 1215039-66-9 | Impurity | |
| Entacapone Impurity 7 | ||||
 | C4X-16298 | 1150310-15-8 | Impurity | |
| Entacapone EP Impurity H | ||||
