Daclatasvir Impurity

Daclatasvir Impurity 1 Daclatasvir Impurity 7 Daclatasvir Impurity 12 Daclatasvir Di-Descarbamate Impurity 1H-IMidazole, 5,5'-[1,1'-biphenyl]-4,4'-diylbis[2-(2S)-2-pyrrolidinyl-, hydrochloride (1:4) Daclatasvir Impurity 4 1,1'-[1,1'-biphenyl]-4,4'-diylbis[2,2-dibromo]-ethanone Daclatasvir Impurity D Daclatasvir Impurity 7 (RRRR-Isomer) 1-{4'-acetyl-[1,1'-biphenyl]-4-yl}-2-bromoethan-1-one Daclatasvir Dihydrochloride methyl ((S)-1-((S)-2-(5-(4'-(2-((S)-1-((S)-2-amino-3-methylbutanoyl)pyrrolidin-2-yl)-1H-imidazol-4-yl)-[1,1'-biphenyl]-4-yl)-1H-imidazol-2-yl)pyrrolidin-1-yl)-3-methyl-1-oxobutan-2-yl)carbamate Daclatasvir Daclatasvir Impurity F Daclatasvir Impurity 5 (SRSS-Isomer)