Bendamustine Dihydroxy Impurity ;
4-[5-[Bis(2-hydroxyethyl)amino]-1-methylbenzimidazol-2-yl]butanoic acid HCl ;
CAS # 109882-30-6 (base) ; 109882-29-3 (HCl) ;
C16H23N3O4 (base) ; MW: 321.37 ;
C16H24ClN3O4 (HCl salt) ; MW: 357.83 ;
Supplied as HCl salt ;