5-O-demethyldonepezil (5-O-Desmethyl Donepezil) is a derivative of Donepezil. It is a white solid powder, stable at room temperature. Its molecular formula is C24H29NO3 and its relative molecular mass is 391.49g/mol.
5-o-demethyldonepezil is primarily used as a cholinesterase inhibitor for the treatment of Alzheimer's disease. It raises acetylcholine levels in the brain, which improves cognitive function and memory.
The preparation of 5-o-demethyldonepezil is generally obtained by performing a chemical reaction on donepezil. Donepezil is first reacted with carbamoyl chloride (or other appropriate acid chloride) to form an amide. The amide then reacts with sodium hydroxide to undergo a demethylation reaction to produce 5-o-demethyldonepezil.
In terms of safety, the toxicity and side effects of 5-o-demethyldonepezil need to be further studied. During use, you should pay attention to the dosage and method of use, and follow the doctor's advice.