Bendamustine USP Related Compound D Catalogue B442634 CAS 1797881-48-1 M.W 295.77 36.46 M.F C14H18ClN3O2. HCl Specifications FAQs Synonyms:4-(5-((2-chloroethyl)amino)-1-methyl-1H-benzo[d]imidazol-2-yl)butanoic acidCAS:1219709-86-0 (free base)