Bendamustine USP Related Compound I Catalogue B442639 CAS 87475-54-5 M.W 386.32 M.F C18H25Cl2N3O2 Specifications FAQs Synonyms:Ethyl 4-(5-(bis(2-chloroethyl)amino)-1-methyl-1H-benzo[d]imidazol-2-yl)butanoate