英文别名4-{5-[Bis(2-chloroethyl)amino]-1H-benzimidazol-2-yl}butanoic acid; N-DESMETHYLBENDAMUSTINE; Bendamustine Desmethyl Impurity; N-desmethyl Bendamustine; Bendamustine impurity 10/Desmethyl Bendamustine/6-[Bis(2-chloroethyl)amino]-1H-Benzimidazole-2-butanoic Acid; Bendamustine Impurity 5 (Desmethyl Impurity); 1H-Benzimidazole-2-butanoic acid, 6-[bis(2-chloroethyl)amino]-; Bendamustine M4 
