Dabigatran Etexilate Impurity E Catalogue D112425 CAS 1422435-41-3 M.W 500.56 M.F C27H28N6O4 Specifications FAQs ethyl 3-(2-(((4-carbamoylphenyl)amino)methyl)-1-methyl-N-(pyridin-2-yl)-1H-benzo[d]imidazole-5-carboxamido)propanoate