Chemical Structure	CAT No.	CAS	Item Group	Purity
	C4X-107932	N/A	Impurity
	Tofacitinib Impurity 32
	C4X-107933	1640971-60-3	Impurity
	Tofacitinib Impurity 33
	C4X-107934	344418-92-4	Impurity
	Tofacitinib Impurity 34 (Mixture of Diastereomers)
	C4X-107935	N/A	Impurity
	Tofacitinib Impurity 35
	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