英文别名Methyl 4-{5-[bis(2-chloroethyl)amino]-1-methyl-1H-benzimidazol-2-yl}butanoate; 5-[Bis(2-chloroethyl)amino]-1-methyl-1H-benzimidazole-2-butanoic Acid Methyl Ester; methyl 4-[5-[bis(2-chloroethyl)amino]-1-methylbenzimidazol-2-yl]butanoate; Bendamustine methyl ester; 1H-Benzimidazole-2-butanoic acid, 5-[bis(2-chloroethyl)amino]-1-methyl-, methyl ester 
