donepezil and its Impurities
A reversible acetylcholinesterase inhibitor, Donepezil is used for the treatment of of Alzheimer's disease. It is a medication used in palliative treatment. It works by inhibiting the hydrolysis of acetylcholine.. Reference standards of Donepezil API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below


4-[(2,3-Dihydro-5,6-dimethoxy-1-oxo-1H-inden-2-yl)methyl]-1,1-bis(phenylmethyl)piperidinium-d14 Bromide
4-[(2,3-Dihydro-5,6-dimethoxy-1-oxo-1H-inden-2-yl)methyl]-1,1-bis(phenylmethyl)piperidinium-d14 Bromide
Catalogue No.:PA STI 032760
CAS :
NA
Molecular Formula : C31H22D14BrNO3
Molecular Weight : 564.61


Desbenzyl Donepezil Hydrochloride (5,6-dimethoxy-2-(piperidin-4-ylmethyl)indan-1-one hydrochloride) (1171819)
Desbenzyl Donepezil Hydrochloride (5,6-dimethoxy-2-(piperidin-4-ylmethyl)indan-1-one hydrochloride) (1171819)
Catalogue No.:PA USP1171819
CAS :
120013-39-0
Molecular Formula : NA
Molecular Weight : NA


Donepezil Related Compound A ((E)-2-[(1-benzylpiperidin-4-yl)methylene]-5,6-dimethoxyindan-1-one) (1224992)
Donepezil Related Compound A ((E)-2-[(1-benzylpiperidin-4-yl)methylene]-5,6-dimethoxyindan-1-one) (1224992)
Catalogue No.:PA USP1224992
CAS :
145546-80-1
Molecular Formula : NA
Molecular Weight : NA


5,6-Dimethoxy-2-((1-(phenylmethyl-d2)piperidin-4-yl)methyl-d2)-2,3-dihydro-1H-inden-1-one
5,6-Dimethoxy-2-((1-(phenylmethyl-d2)piperidin-4-yl)methyl-d2)-2,3-dihydro-1H-inden-1-one
Catalogue No.:PA 04 0391013
CAS :
1219908-72-1
Molecular Formula : C24H25D4NO3
Molecular Weight : 383.52


5,6-Dimethoxy-2-((1-(phenyl(o-tolyl)methyl)piperidin-4-yl)methyl)-2,3-dihydro-1H-inden-1-one
5,6-Dimethoxy-2-((1-(phenyl(o-tolyl)methyl)piperidin-4-yl)methyl)-2,3-dihydro-1H-inden-1-one
Catalogue No.:PA 04 0391021
CAS :
2763182-89-2
Molecular Formula : C31H35NO3
Molecular Weight : 469.63