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220031-61-8

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220031-61-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 220031-61-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,0,3 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 220031-61:
(8*2)+(7*2)+(6*0)+(5*0)+(4*3)+(3*1)+(2*6)+(1*1)=58
58 % 10 = 8
So 220031-61-8 is a valid CAS Registry Number.

220031-61-8Relevant articles and documents

The Magic of Crystal Structure-Based Inhibitor Optimization: Development of a Butyrylcholinesterase Inhibitor with Picomolar Affinity and in Vivo Activity

Ko?ak, Urban,Brus, Boris,Knez, Damijan,?akelj, Simon,Trontelj, Jurij,Pi?lar, Anja,?ink, Roman,Juki?, Marko,?ivin, Marko,Podkowa, Adrian,Nachon, Florian,Brazzolotto, Xavier,Stojan, Jure,Kos, Janko,Coquelle, Nicolas,Sa?at, Kinga,Colletier, Jacques-Philippe,Gobec, Stanislav

, p. 119 - 139 (2018/01/01)

The enzymatic activity of butyrylcholinesterase (BChE) in the brain increases with the progression of Alzheimer's disease, thus classifying BChE as a promising drug target in advanced Alzheimer's disease. We used structure-based drug discovery approaches to develop potent, selective, and reversible human BChE inhibitors. The most potent, compound 3, had a picomolar inhibition constant versus BChE due to strong cation-π interactions, as revealed by the solved crystal structure of its complex with human BChE. Additionally, compound 3 inhibits BChE ex vivo and is noncytotoxic. In vitro pharmacokinetic experiments show that compound 3 is highly protein bound, highly permeable, and metabolically stable. Finally, compound 3 crosses the blood-brain barrier, and it improves memory, cognitive functions, and learning abilities of mice in a scopolamine model of dementia. Compound 3 is thus a promising advanced lead compound for the development of drugs for alleviating symptoms of cholinergic hypofunction in patients with advanced Alzheimer's disease.

Straightforward synthesis of orthogonally protected piperidin-3- ylmethanamine and piperidin-4-ylmethanamine derivatives

Ko?ak, Urban,Brus, Boris,Gobec, Stanislav

, p. 2037 - 2039 (2014/04/03)

The 1,3- and 1,4-disubstituted piperidines are important building blocks in medicinal chemistry and drug discovery. We present the synthesis of orthogonally protected piperidin-3-ylmethanamine and piperidin-4-ylmethanamine derivatives from commercially available nipecotamide, isonipecotamide, nipecotic acid and isonipecotic acid. This is a straightforward two-step procedure that gives high overall yields. Purification of the intermediates using this procedure is not necessary, and the final compounds are purified by simple flash column chromatography.

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