英文别名4-((5,6-Dimethoxy-2,3-dihydro-1h-inden-2-yl)methyl)piperidine; 4-[(5,6-Dimethoxy-2,3-dihydro-1H-inden-2-yl)methyl]piperidine; 5,6-Dimethoxy-2-[(4-piperidyl)methyl]indane; Donepezil Impurity 20; 4-[(2,3-Dihydro-5,6-dimethoxy-1H-inden-2-yl)methyl]piperidine; Piperidine, 4-[(2,3-dihydro-5,6-dimethoxy-1H-inden-2-yl)methyl]- 
