Chemical Structure	CAT No.	CAS	Item Group	Purity
	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
	C4X-107948	N/A	Impurity
	Tofacitinib Impurity 48
	C4X-107949	2459302-78-2	Impurity
	Tofacitinib Impurity 49
	C4X-10795	1616760-97-4	Impurity
	Tofacitinib Impurity 5
	C4X-107950	2227199-31-5	Impurity
	Tofacitinib Impurity 50
	C4X-107951	2504210-38-0	Impurity
	Tofacitinib Impurity 51
	C4X-107952	694495-63-1	Impurity
	Tofacitinib Impurity 52