Azilsartan Impurity T Catalogue A195640 CAS 147403-65-4 M.W 444.49 M.F C25H24N4O4 Specifications FAQs (Z)-methyl 2-ethoxy-1-((2'-(N'-hydroxycarbamimidoyl)-[1,1'-biphenyl]-4-yl)methyl)-1H-benzo[d]imidazole-7-carboxylate