Dabigatran Etexilate Impurity B Catalogue D112422 CAS 212321-78-3 M.W 599.69 M.F C32H37N7O5 Specifications FAQs 3-(2-(((4-(N-((hexyloxy)carbonyl)carbamimidoyl)phenyl)amino)methyl)-1-methyl-N-(pyridin-2-yl)-1H-benzo[d]imidazole-5-carboxamido)propanoic acid