Chemical Structure CAT No. CAS Item Group Purity
Tofacitinib Impurity 37 C4X-107937 1252883-90-1 Impurity
Tofacitinib Impurity 37
Tofacitinib Impurity 38 C4X-107938 N/A Impurity
Tofacitinib Impurity 38
Tofacitinib Impurity 39 C4X-107939 N/A Impurity
Tofacitinib Impurity 39
Tofacitinib Impurity 4 C4X-10794 477600-73-0 Impurity
Tofacitinib Impurity 4
Tofacitinib Impurity 41 C4X-107941 N/A Impurity
Tofacitinib Impurity 41
Tofacitinib Impurity 42 C4X-107942 N/A Impurity
Tofacitinib Impurity 42
(See C4X-107915)Tofacitinib Impurity 44 C4X-107944 N/A Impurity
(See C4X-107915)Tofacitinib Impurity 44
Tofacitinib Impurity 45 C4X-107945 N/A Impurity
Tofacitinib Impurity 45
Tofacitinib Impurity 47 C4X-107947 N/A Impurity
Tofacitinib Impurity 47
Tofacitinib Impurity 48 C4X-107948 N/A Impurity
Tofacitinib Impurity 48