Azilsartan Impurity Q Catalogue A195637 CAS 1696392-12-7 M.W 527.53 M.F C29H25N3O7 Specifications FAQs (5-methyl-2-oxo-1,3-dioxol-4-yl)methyl 1-((2'-carbamoyl-[1,1'-biphenyl]-4-yl)methyl)-2-ethoxy-1H-benzo[d]imidazole-7-carboxylate