API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Donepezil

N-oxide impurity

Donepezil N-Oxide impurity DonepezilN-oxide impurity
Donepezil

EP Impurity A

2,3-dihydro-5,6-dimethoxy-2-((pyridin-4-yl)methyl)inden-1-one
Donepezil

Donepezil EP Impurity

1-Benzyl-4-[3-(benzyloxy)- 5,6-dimethoxy-1H-2-indenyl]methyl piperidine. DonepezilDonepezil EP Impurity
Donepezil

Donepezil EP Impurity

1-Benzyl-4-[(5,6-dimethoxy-1H-inden-2yl)methyl]piperidine DonepezilDonepezil EP Impurity1
Donepezil

Donepezil EP Impurity

5,6-Dimethoxy-2-(4-pyridyl)methyl-indan-1-one DonepezilDonepezil EP Impurity2
Donepezil

Donepezil EP Impurity

2,3-Dihydro-5,6-dimethoxy-2-[(4-pyridinyl)methylene-1H-inden-1-one DonepezilDonepezil EP Impurity3
Donepezil

Donepezil EP Impurity

1-Benzyl-4-[(5,6-dimethoxy-2,3-dihydro-1H-indan-2yl)methyl]piperidine DonepezilDonepezil EP Impurity4
Donepezil

Donepezil EP Impurity

1,1-dibenzyl-4-[(5,6-dimethoxy-1-oxo-2,3- dihydro-1H-inden- 2yl)methyl]piperidinium bromide DonepezilDonepezil EP Impurity5
Donepezil

3-Hydroxy Donepezil

2-((1-benzylpiperidin-4-yl)methyl)-3-hydroxy-5,6-dimethoxy-2,3-dihydro-1H-inden-1-one 1