Chemical Structure	CAT No.	CAS	Item Group	Purity
	C4X-102238	N/A	Impurity
	Carfilzomib Impurity 38 (Mixture of Diastereomers)
	C4X-102239	1541171-67-8	Impurity
	Carfilzomib Impurity 39
	C4X-10224	N/A	Impurity
	Carfilzomib Impurity 4
	C4X-102240	N/A	Impurity
	Carfilzomib Impurity 40
	C4X-102241	N/A	Impurity
	Carfilzomib Impurity 41
	C4X-102242	N/A	Impurity
	Carfilzomib Impurity 42
	C4X-102243	247068-85-5	Impurity
	Carfilzomib Impurity 43
	C4X-102244	254888-42-1	Impurity
	Carfilzomib Impurity 44
	C4X-102245	1660143-42-9	Impurity
	Carfilzomib Impurity 45
	C4X-102246	2049025-49-0	Impurity
	Carfilzomib Impurity 46