(S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide

(S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide structure

CAS No.: 254888-42-1

Chemical Name:: (S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide

Synonyms: PR-019;Kyprolis Impurity U;Caffezomib Impurity 57;Carfilzomib Impurity U;Carfilzomib Impurity 57;Carfilzomib Impurity U (Pr-019);Carfilzomib Impurity G/H (OA Carfilzomib Impurity 37);L-Phenylalaninamide, (αS)-α-(acetylamino)benzenebutanoyl-L-leucyl-N-[(1S)-3-methyl-1-[[(2R)-2-methyl-2-oxiranyl]carbonyl]butyl]-;(S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide

CBNumber:: CB44809159

Molecular Formula:: C36H50N4O6

Molecular Weight:: 634.82

MDL Number:

MOL File:: 254888-42-1.mol

Last updated:2025-07-04 15:02:12

Request For Quotation

(S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide Properties

Boiling point	923.3±65.0 °C(Predicted)
Density	1.143±0.06 g/cm3(Predicted)
pka	13.17±0.46(Predicted)
InChIKey	AEKCYLCKBMCKDQ-NMSRDFGHNA-N
SMILES	C([C@@]1(OC1)C)(=O)[C@H](CC(C)C)NC(=O)[C@@H](NC(=O)[C@H](CC(C)C)NC(=O)[C@@H](NC(=O)C)CCC1C=CC=CC=1)CC1C=CC=CC=1 \|&1:1,6,14,18,26,r\|

(S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide Preparation Products And Raw materials

Raw materials

Preparation Products

(S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide Suppliers

Global( 38)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
ShenZhen H&D Pharmaceutical Technology Co., LTD	+8618627948422	sale@hdimpurity.com	China	3681	58
Moxin Chemicals	+86-17320513646 +8617320513646	anna@molcoo.com	China	10000	58
Shaanxi Dideu New Materials Co. Ltd	+86-18192503167 18192503167;	1036@dideu.com	China	7917	58
Chongqing jooe co., ltd	+undefined86-15223382610	info@jooe.com	China	15976	58
Sinco Pharmachem (ShenZhen) R&D Co., Ltd.	+undefined18603013401	jack.lin@sincopharmachem.com	China	9996	58
QUALITY CONTROL SOLUTIONS LTD.	+86-0755-66853366 +86-13670046396	export03@qcsrm.com	China	24342	58
Anqing Xinheyuan Pharmaceutical Technology Co., Ltd	18915922978 15270619650	xiang.ru@synovent.cn	China	30	58
S.Z. PhyStandard Bio-Tech. Co., Ltd.	0755-4000505016 13380397412	3001272453@qq.com	China	5157	50
Quality Control Solutions Ltd.	0755-66853366 13670046396	orders@qcsrm.com	China	18421	56
Shanghai Kewel Chemical Co., Ltd.	021-64609169 18901607656	greensnown@163.com	China	9906	50

Supplier	Advantage
ShenZhen H&D Pharmaceutical Technology Co., LTD	58
Moxin Chemicals	58
Shaanxi Dideu New Materials Co. Ltd	58
Chongqing jooe co., ltd	58
Sinco Pharmachem (ShenZhen) R&D Co., Ltd.	58
QUALITY CONTROL SOLUTIONS LTD.	58
Anqing Xinheyuan Pharmaceutical Technology Co., Ltd	58
S.Z. PhyStandard Bio-Tech. Co., Ltd.	50
Quality Control Solutions Ltd.	56
Shanghai Kewel Chemical Co., Ltd.	50

View Lastest Price from (S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-03-12	Carfilzomib Impurity 57	US $0.00-0.00 / mg	10mg	98%	500mg	ShenZhen H&D Pharmaceutical Technology Co., LTD
2025-12-16	Carfilzomib Impurity 44 254888-42-1	US $0.00-0.00 / mg	10mg	95	100000000	Moxin Chemicals
2025-12-01	(S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide 254888-42-1	US $0.00 / kg	1kg	98%	1000kg	Shaanxi Dideu New Materials Co. Ltd

Carfilzomib Impurity 57
US $0.00-0.00 / mg
98%
ShenZhen H&D Pharmaceutical Technology Co., LTD

Carfilzomib Impurity 44
254888-42-1
US $0.00-0.00 / mg
95
Moxin Chemicals

(S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide
254888-42-1
US $0.00 / kg
98%
Shaanxi Dideu New Materials Co. Ltd

254888-42-1((S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide)Related Search:

(S)-4-Methyl-N-((S)-1-(((R)-4-Methyl-1-((S)-2-Methyloxiran-2-yl)-1-oxopentan-2-yl)aMino)-1-oxo-3-phenylpropan-2-yl)-2-((S)-2-(2-MorpholinoacetaMido)-4-phenylbutanaMido)pentanaMide Carfilzomib Impurity 2 CarfilzoMib IMpurity 5 (S)-benzyl 2-((S)-2-((S)-2-amino-4-phenylbutanamido)-4-methylpentanamido)-3-phenylpropanoate hydrochloride (S)-N-((S)-1-(((S)-2,6-Dimethyl-3-oxohept-1-en-4-yl)amino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide

Carfilzomib Related Impurity (S)-benzyl 2-((S)-4-methyl-2-((S)-2-(2-morpho lino acetamido)-4-phenylbutanamido)pentanamido)-3-phenylpropanoate (S)-4-Methyl-N-((S)-1-(((R)-4-Methyl-1-((R)-2-Methyloxiran-2-yl)-1-oxopentan-2-yl)aMino)-1-oxo-3-phenylpropan-2-yl)-2-((S)-2-(2-MorpholinoacetaMido)-4-phenylbutanaMido)pentanaMide (S)-2-((S)-4-Methyl-2-((R)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamido)-3-phenylpropanoic acid Carfilzomib Impurity 15

CarfilzoMib IMpurity 4 (S)-N-((S)-1-(((2R,4S)-1-((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)-2-hydroxy-2,6-dimethyl-3-oxoheptan-4-yl)amino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide Carfilzomib Impurity 9 (S)-benzyl 2-((S)-2-amino-4-methylpentanamido)-3-phenylpropanoate hydrochloride Carfilzomib Impurity 5 TFA Salt

Carfilzomib Impurity 4 (N-Oxide Impurity) (R)-4-Methyl-N-((S)-1-(((S)-4-Methyl-1-((R)-2-Methyloxiran-2-yl)-1-oxopentan-2-yl)aMino)-1-oxo-3-phenylpropan-2-yl)-2-((S)-2-(2-MorpholinoacetaMido)-4-phenylbutanaMido)pentanaMide (alphaS)-alpha-Aminobenzenebutanoyl-L-leucyl-L-phenylalanine methyl ester mono(trifluoroacetate)

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(S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide PR-019 Carfilzomib Impurity 57 L-Phenylalaninamide, (αS)-α-(acetylamino)benzenebutanoyl-L-leucyl-N-[(1S)-3-methyl-1-[[(2R)-2-methyl-2-oxiranyl]carbonyl]butyl]- Kyprolis Impurity U Carfilzomib Impurity U Carfilzomib Impurity U (Pr-019) Caffezomib Impurity 57 Carfilzomib Impurity G/H (OA Carfilzomib Impurity 37) 254888-42-1