Place of Origin: | China |
Brand Name: | LiHui |
Certification: | USP |
Model Number: | 120014-06-4 |
Minimum Order Quantity: | 100g |
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Price: | Negotiated |
Packaging Details: | Foil Bag |
Delivery Time: | 3-7days after received payment |
Payment Terms: | T/T, Western Union, MoneyGram |
Supply Ability: | 5000Kg Per Month |
CAS: | 120014-06-4 | Color Or Appearance: | White Crystalline Powder |
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Product Use: | Men Become More Sexually Active | Packing Specification: | Aluminum Foil Bag Or Aluminum Tin 25 Kg/barrel |
Execution Standard: | USP42 | Product Purity: | 99% |
The Product Level: | Pharmaceutical Grade | Molecular Formula: | C24H30ClNO3 |
High Light: | CAS 120014-06-4,120014-06-4 Donepezil Hydrochloride |
CAS 120014-06-4 donepezil hydrochloride For Alzheimer′S Disease Treatment
Product Name:DONEPEZIL HYDROCHLORIDE
Synonyms:AKOS 226-31;E-2020;DONEPEZIL HCL;ARICEPT;DonepezilHcl120011-70-3/;DONEPEZIL (DONEPEZIL HYDROCHLORIDE);2-[(1-Benzyl-4-piperidyl)methyl]-5,6-dimethoxy-2,3-dihydroinden-1-one hydrochloride;Donepezil hydrochloride
CAS:110119-84-1
MF:C24H30ClNO3
MW:415.95
Description
Donepezil is a centrally acting reversible acetylcholinesterase inhibitor. Its main therapeutic use is in the palliative treatment of Alzheimer's disease. Common side effects include gastrointestinal upset. It has an oral bioavailability of 100% and easily crosses the blood-brain barrier. Because it has a biological half-life of about 70 hours, it can be taken once a day.
Donepezil has been tested in other cognitive disorders (and is sometimes used off label) including Lewy body dementia and vascular dementia, but it is not currently approved for these indications. Donepezil has been found to improve sleep apnea in Alzheimer's patients. Donepezil has also been studied in patients with Mild Cognitive Impairment, schizophrenia, attention deficit disorder, post-coronary bypass cognitive impairment, cognitive impairment associated with multiple sclerosis, CADASIL, and Down syndrome.
A 3 year NIH trial in patients with mild cognitive impairment reported that donepezil was superior to placebo in delaying rate of progression to dementia during the initial 18 months of the study but this was not sustained at 36 months. In a secondary analysis, a subgroup of individuals with the Apolipoprotein E4 genotype showed sustained benefits with donepezil throughout the study. However at this time donepezil is not indicated for prevention of dementia. Recent studies suggest that Donepezil can improve speech in children with autism. The studies found that speech of autistic children who were mild to moderately affected appeared to improve from the use of Donepezil.
Usage
Usage | A nootropic. An inhibitor of acetylcholinesterase |
Usage | A labelled nootropic. An inhibitor of acetylcholinesterase. |
Usage | Antialzheimer |
Usage | Labeled Donepezil, intended for use as an internal standard for the quantification of Donepezilby GC- or LC-mass spectrometry. |
Definition | ChEBI: Donepezil hydrochloride is a centrally acting reversible acetyl cholinesterase inhibitor. Its main therapeutic use is in the treatment of Alzheimer's disease where it is used to increase cortical acetylcholine. |
Application
1. Donepezil binds and inactivates reversibly the cholinesterases, thus inhibiting hydrolysis of acetylcholine. This results in an increased acetylcholine concentrations at cholinergic synapses.
2. The precise mechanism of action of donepezil in patients with Alzheimer's disease is not fully understood. Certainly Alzheimer's disease involves a substantial loss of the elements of the cholinergic system and it is generally accepted that the symptoms of Alzheimer's disease are related to this cholinergic deficit, particularly in the cerebral cortex and other areas of the brain.
3. It is noted that the hippocampal formation plays an important role in the processes of control of attention, memory and learning. Just the severity of the loss of cholinergic neurons of the central nervous system (CNS) has been found to correlate with the severity of cognitive impairment.
COA
TEST ITEM | SPECIFICATION | RESULT |
Appearance | Off white to white crystalline powder | Complies |
Solubility | freely Freely soluble in chloroform, soluble in water and Acetic acid, slightly soluble in Acetonitrile and ethanol, insoluble in Ethylacetoacetate and n-hexane |
Complies |
Identification | (1)By IR absorption ,To match with working standard |
Complies |
(2) The retention time of the major peak of the sample should accord with that of the working standard. |
Complies | |
(3) Test for chlorides. Reponds to the test for Chlorides. |
Complies | |
PH | 4.0-7.0 | 6.10 |
Residue on ignition | ≤0.1% | 0.03% |
Related substance | Any Unkonwn single impurity≤0.3% Total ≤0.5% |
0.04% 0.18% |
Heavy metal | ≤10ppm | <10ppm |
Residual Solvents | Methanol≤0.3% Ethanol≤0.5% Ethyl acetate≤0.5% Toluene≤0.089% Acetic acid≤0.5% |
Not detected Not detected Not detected Not detected Not detected |
Loss on drying | ≤0.5% | 0.20% |
Assay | On dried base, C24H29NO3·HCl should be 98.0% to 102.0% |
100.20% |
Conclusion: The product complies to Enterprise standard |
Abstract
Donepezil is a centrally acting reversible acetylcholinesterase inhibitor. Its main therapeutic use is in the palliative treatment of Alzheimer's disease. Common side effects include gastrointestinal upset. It has an oral bioavailability of 100% and easily crosses the blood-brain barrier. Because it has a biological half-life of about 70 hours, it can be taken once a day.
Donepezil has been tested in other cognitive disorders (and is sometimes used off label) including Lewy body dementia and vascular dementia, but it is not currently approved for these indications. Donepezil has been found to improve sleep apnea in Alzheimer's patients. Donepezil has also been studied in patients with Mild Cognitive Impairment, schizophrenia, attention deficit disorder, post-coronary bypass cognitive impairment, cognitive impairment associated with multiple sclerosis, CADASIL, and Down syndrome.
A 3 year NIH trial in patients with mild cognitive impairment reported that donepezil was superior to placebo in delaying rate of progression to dementia during the initial 18 months of the study but this was not sustained at 36 months. In a secondary analysis, a subgroup of individuals with the Apolipoprotein E4 genotype showed sustained benefits with donepezil throughout the study. However at this time donepezil is not indicated for prevention of dementia. Recent studies suggest that Donepezil can improve speech in children with autism. The studies found that speech of autistic children who were mild to moderately affected appeared to improve from the use of Donepezil.
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