Chemical Structure	CAT No.	CAS	Item Group	Purity
	C4X-102255	2177287-70-4	Impurity
	Carfilzomib Impurity 55
	C4X-102256	868540-16-3	Impurity
	Carfilzomib Imputity 56
	C4X-102257	N/A	Impurity
	Carfilzomib Impurity 57
	C4X-102258	N/A	Impurity
	Carfilzomib Impurity D3
	C4X-102259	N/A	Impurity
	Carfilzomib Impurity D4
	C4X-10226	N/A	Impurity
	Carfilzomib Impurity 6
	C4X-102260	N/A	Impurity
	Carfilzomib Impurity 60 (Mixture of Diastereomers)
	C4X-102261	2049025-67-2	Impurity
	Carfilzomib Impurity 61
	C4X-102262	1960444-14-7	Impurity
	Carfilzomib Impurity 62
	C4X-102263	N/A	Impurity
	Carfilzomib Impurity 63