| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-196221 | 328055-92-1 | Impurity | |
| Varenicline Impurity 21 | ||||
 | C4X-196222 | 1213781-59-9 | Impurity | |
| Varenicline Impurity 22 | ||||
 | C4X-196223 | 1350219-74-7 | Impurity | |
| Varenicline Impurity 23 | ||||
 | C4X-196224 | N/A | Impurity | |
| Varenicline Impurity 24 | ||||
| C4X-196225 | N/A | Impurity | |
| Varenicline Impurity 25 | ||||
| C4X-196226 | N/A | Impurity | |
| Varenicline Impurity 26 | ||||
| C4X-196227 | 950781-91-6 | Impurity | |
| Varenicline Impurity 27 | ||||
 | C4X-196228 | 1026685-55-1 | Impurity | |
| Varenicline Impurity 28 | ||||
| C4X-196229 | N/A | Impurity | |
| Varenicline Impurity 29 | ||||
| C4X-19623 | 230615-51-7 | Impurity | |
| Varenicline Impurity 3 | ||||
