Finasteride EP Impurity B

Chemical Name: Finasteride Methyl Ester Analog ; Dutasteride Methyl Ester Analog ; 3-Oxo-4-aza-5α-αndrost-1-ene-17β-carboxylic acid methyl ester ;

Synonym: [(1R,​2R)​-​2-​[[4-​(1,​2-​benzisothiazol-​3-​yl)​-​1-​piperazinyl]​methyl]​cyclohexyl]​methyl ester 4-​(1,​2-​benzisothiazol-​3-​yl)​-​1-​Piperazinecarboxylic acid