| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-107936 | N/A | Impurity | |
| Tofacitinib Impurity 36 | ||||
 | C4X-107937 | 1252883-90-1 | Impurity | |
| Tofacitinib Impurity 37 | ||||
| C4X-107938 | N/A | Impurity | |
| Tofacitinib Impurity 38 | ||||
| C4X-107939 | N/A | Impurity | |
| Tofacitinib Impurity 39 | ||||
 | C4X-10794 | 477600-73-0 | Impurity | |
| Tofacitinib Impurity 4 | ||||
| C4X-107941 | N/A | Impurity | |
| Tofacitinib Impurity 41 | ||||
| C4X-107942 | N/A | Impurity | |
| Tofacitinib Impurity 42 | ||||
| C4X-107944 | N/A | Impurity | |
| (See C4X-107915)Tofacitinib Impurity 44 | ||||
| C4X-107945 | N/A | Impurity | |
| Tofacitinib Impurity 45 | ||||
| C4X-107947 | N/A | Impurity | |
| Tofacitinib Impurity 47 | ||||
