Chemical Name: Donepezil Dihydro Impurity ; 2,3-Dihydro-5,6-dimethoxy-2-[[1-(phenylmethyl)-4-piperidinyl]methyl]-1H-inden-1-ol ;
Synonym: 4-[(7-Chloro-4-quinolinyl)amino]-2-[(ethylamino)methyl]phenol Dihydrochloride ; 4-(7-Chloro-4-quinolylamino)-α-ethylamino-o-cresol Dihydrochloride