Azilsartan Impurity I Catalogue A195629 CAS 139481-33-7 M.W 383.41 M.F C23H17N3O3 Specifications FAQs methyl 3-((2'-cyano-[1,1'-biphenyl]-4-yl)methyl)-2-oxo-2,3-dihydro-1H-benzo[d]imidazole-4-carboxylate
