Donepezildrug info

Donepezil hydrochloride is a reversible inhibitor of the enzyme acetylcholinesterase, known chemically as (±)-2, 3-dihydro-5, 6-dimethoxy-2-[[1-(phenylmethyl)-4-piperidinyl]methyl]-1 H -inden-1-one hydrochloride. Donepezil hydrochloride is commonly referred to in the pharmacological literature as E2020. It has an empirical formula of C 24 H 29 NO 3 HCl and a molecular weight of 415.96. Donepezil hydrochloride is a white crystalline powder and is freely soluble in chloroform, soluble in water and in glacial acetic acid, slightly soluble in ethanol and in acetonitrile, and practically insoluble in ethyl acetate and in n-hexane. Donepezil Hydrochloride Tablets, USP, are available for oral administration in film-coated tablets containing 5 mg or 10 mg of donepezil hydrochloride, USP. Inactive ingredients in 5 mg and 10 mg tablets are corn starch, croscarmellose sodium, hydroxypropyl cellulose, lactose monohydrate, magnesium stearate, microcrystalline cellulose. The film of 5 mg tablets coating contains FD&C Blue #2/INDIGO CARMINE ALUMINUM LAKE, hypromellose, polyethylene glycol, and titanium dioxide. The film of 10 mg tablets coating contains hypromellose, iron oxide red, iron oxide yellow, polyethylene glycol, and titanium dioxide. Structural Formula