| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-107956 | 923036-30-0 | Impurity | |
| Tofacitinib Impurity 56 | ||||
 | C4X-107957 | 477600-70-7 | Impurity | |
| Tofacitinib Impurity 57 | ||||
 | C4X-107958 | N/A | Impurity | |
| Tofacitinib Impurity 58 | ||||
| C4X-107959 | 2250241-69-9 | Impurity | |
| Tofacitinib Impurity 59 | ||||
 | C4X-10796 | 477600-74-1 | Impurity | |
| Tofacitinib Impurity 6 | ||||
 | C4X-107960 | 90213-66-4 | Impurity | |
| Tofacitinib Impurity 60 | ||||
| C4X-107961 | 1821769-41-8 | Impurity | |
| Tofacitinib Impurity 61 | ||||
 | C4X-107963 | 1354469-76-3 | Impurity | |
| Tofacitinib Impurity 63 | ||||
| C4X-107964 | 2504210-40-4 | Impurity | |
| Tofacitinib Impurity 64 | ||||
| C4X-107965 | N/A | Impurity | |
| Tofacitinib Impurity 65 | ||||
