Chemical Structure CAT No. CAS Item Group Purity
Tofacitinib Impurity 136 C4X-1079136 2803420-43-9 Impurity
Tofacitinib Impurity 136
Tofacitinib Impurity 137 C4X-1079137 7400-06-8 Impurity
Tofacitinib Impurity 137
Tofacitinib Impurity 138 C4X-1079138 N/A Impurity
Tofacitinib Impurity 138
Tofacitinib Impurity 139 C4X-1079139 N/A Impurity
Tofacitinib Impurity 139
Tofacitinib Impurity 14 C4X-107914 1809002-40-1 Impurity
Tofacitinib Impurity 14
Tofacitinib Impurity 140 C4X-1079140 N/A Impurity
Tofacitinib Impurity 140
Tofacitinib Impurity 141 (Mixture of Tautomeric Isomers) C4X-1079141 1245811-22-6 Impurity
Tofacitinib Impurity 141 (Mixture of Tautomeric Isomers)
Tofacitinib Impurity 142 C4X-1079142 1431697-80-1 Impurity
Tofacitinib Impurity 142
Tofacitinib Impurity 143 C4X-1079143 1206875-41-3 Impurity
Tofacitinib Impurity 143
Tofacitinib Impurity 144 C4X-1079144 2091669-67-7 Impurity
Tofacitinib Impurity 144