| Synonyms: | Daclatasvir Impurity (RSSR-isomer);Daclatasvir Impurity A;N,N'-[[1,1'-Biphenyl]-4,4'-diylbis[1H-imidazole-5,2-diyl-(2S)-2,1-pyrrolidinediyl[(1R)-1-(1-methylethyl)-2-oxo-2,1-ethanediyl]]]biscarbamic Acid C,C'-Dimethyl Ester;Daclatasvir impurity 1/Daclatasvir RSSR Isomer/N,N'-[[1,1'-Biphenyl]-4,4'-diylbis[1H-imidazole-5,2-diyl-(2S)-2,1-pyrrolidinediyl[(1R)-1-(1-methylethyl)-2-oxo-2,1-ethanediyl]]]biscarbamic Acid C,C'-Dimethyl Ester;Daclatasvir Impurity 4 (RSSR-Isomer);Carbamic acid, N,N'-[[1,1'-biphenyl]-4,4'-diylbis[1H-imidazole-5,2-diyl-(2S)-2,1-pyrrolidinediyl[(1R)-1-(1-methylethyl)-2-oxo-2,1-ethanediyl]]]bis-, C,C'-dimethyl ester;daclatasvir RSSR;Daclatasvir RSSR Isomer: Methyl (2R)-1-(2S)-2-5-(4'-2-(2S)-1-(2R)-2- (methoxycarbonyl)amino-3-methylbutanoylpyrrolidin-2-yl-1H--imidazol-2-ylpyrrolidin-lyl -3-methyl-l-oxobutan-2-yl carbamate |