| Chemical Structure | CAT No. | CAS | Item Group | Purity |
|---|---|---|---|---|
 | C4X-1079121 | 1228879-37-5 | Impurity | |
| Tofacitinib Impurity 121 | ||||
 | C4X-1079123 | 1062580-52-2 | Impurity | |
| Tofacitinib Impurity 123 DiHCl | ||||
 | C4X-1079124 | 14446-71-0 | Impurity | |
| Tofacitinib Impurity 124 | ||||
| C4X-1079125 | 861020-12-4 | Impurity | |
| Tofacitinib Impurity 125 HCl | ||||
| C4X-1079126 | 384338-23-2 | Impurity | |
| Tofacitinib Impurity 126 | ||||
| C4X-1079127 | 1204176-45-3 | Impurity | |
| Tofacitinib Impurity 127 | ||||
 | C4X-1079128 | 1206824-67-0 | Impurity | |
| Tofacitinib Impurity 128 HCl | ||||
| C4X-1079129 | 1527525-58-1 | Impurity | |
| Tofacitinib Impurity 129 | ||||
| C4X-107913 | 1812890-23-5 | Impurity | |
| Tofacitinib Impurity 13 | ||||
 | C4X-1079130 | 2564-07-0 | Impurity | |
| Tofacitinib Impurity 130 | ||||
