بنداموستين -1 شائبة استر الميثيل

BEN-1 methyl ester Impurity ; 5-[Bis(2-hydroxyethyl)amino]-1-methyl-1H-benzimidazole-2-butanoic acid methyl ester ; Methyl 4-{5-[bis(2-hydroxyethyl)amino]-1-methyl-1H-benzimidazol-2 -yl}butanoate ; Butanoate, methyl 4-(5-(bis(2-hydroxyethyl)amino)-1-methyl-1H-benzo[d]imidazol-2-yl); BEN-1 methyl ester Impurity;