英文别名5-[(2-Chloroethyl)(2-hydroxyethyl)amino]-1-methyl-1H-benzimidazole-2-butanoic Acid Ethyl Ester; 1H-Benzimidazole-2-butanoic acid, 5-[(2-chloroethyl)(2-hydroxyethyl)amino]-1-methyl-, ethyl ester; Bendamustine Related Impurity 5; Bendamustine Monohydroxy Acid Ethyl Ester; Bendamustine Impurity 20; Bendamustine Impurity 16; Bendamustine Impurity 75