Ubenimex and its Impurities
Ubenimex is an inhibitor of aminopeptidase B, leukotriene A4 hydrolase, aminopeptidase N. It is being studied for use in the treatment of acute myelocytic leukemia.Reference standards of Ubenimex API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


(2S,3R)-3-((tert-Butoxycarbonyl)amino)-2-(((2S,3R)-3-((tert-butoxycarbonyl)amino)-2-hydroxy-4-phenylbutanoyl)oxy)-4-phenylbutanoic Acid
(2S,3R)-3-((tert-Butoxycarbonyl)amino)-2-(((2S,3R)-3-((tert-butoxycarbonyl)amino)-2-hydroxy-4-phenylbutanoyl)oxy)-4-phenylbutanoic Acid
Catalogue No.:PA 21 0151006
CAS :
NA
Molecular Formula : C30H40N2O9
Molecular Weight : 572.66


tert-Butyl ((2S,3R)-3-((tert-butoxycarbonyl)amino)-2-(((2S,3R)-3-((tert-butoxycarbonyl)amino)-2-hydroxy-4-phenylbutanoyl)oxy)-4-phenylbutanoyl)leucinate
tert-Butyl ((2S,3R)-3-((tert-butoxycarbonyl)amino)-2-(((2S,3R)-3-((tert-butoxycarbonyl)amino)-2-hydroxy-4-phenylbutanoyl)oxy)-4-phenylbutanoyl)leucinate
Catalogue No.:PA 21 0151007
CAS :
NA
Molecular Formula : C40H59N3O10
Molecular Weight : 741.92


tert-Butyl ((2S,3R)-3-amino-2-(((2S,3R)-3-amino-2-hydroxy-4-phenylbutanoyl)oxy)-4-phenylbutanoyl)leucinate
tert-Butyl ((2S,3R)-3-amino-2-(((2S,3R)-3-amino-2-hydroxy-4-phenylbutanoyl)oxy)-4-phenylbutanoyl)leucinate
Catalogue No.:PA 21 0151008
CAS :
NA
Molecular Formula : C30H43N3O6
Molecular Weight : 541.69