DNP53H: Donepezil 3-Hydroxy Impurity

2-((1-Benzylpiperidin-4-yl)methyl)-3-hydroxy-5,6-dimethoxy-2,3-dihydroinden-1-one HCl;

CAS  # 2097683-67-3 (Base) ; 

C24H29NO4 (base); Mol. Wt.: 395.49 ;

C24H30ClNO4 (base); Mol. Wt.: 431.95 ;