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344257-61-0

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344257-61-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 344257-61-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,4,2,5 and 7 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 344257-61:
(8*3)+(7*4)+(6*4)+(5*2)+(4*5)+(3*7)+(2*6)+(1*1)=140
140 % 10 = 0
So 344257-61-0 is a valid CAS Registry Number.

344257-61-0Relevant articles and documents

Concise synthesis of 3-arylpiperidines

Chang, Meng-Yang,Hsu, Ru-Ting,Chen, Hua-Ping,Lin, Pei-Jung

, p. 1173 - 1183 (2007/10/03)

We present an easy and straightforward synthesis of 3-arylpiperidines by Grignard addition of piperidin-3-one with different arylmagnesium bromide reagents and acidic dehydroxylation of the resulting tertiary alcohol with the combination of triethylsilane and boron trifluoride etherate. This facile strategy was further used to synthesize preclamol. A highly regioselective dehydration of 3-arylpiperidin-3-ol with boron trifluoride etherate was investigated for preparing 3-aryl-1,4,5,6-tetrahydropyridine skeleton. A novel selenium dioxide mediated dihydroperoxidation of 3-aryl-1,4,5,6-tetrahydropyridine was also examined.

3-Phenylpiperidines. Central Dopamine-Autoreceptor Stimulating Activity

Hacksell, Uli,Arvidsson, Lars-Erik,Svensson, Uno,Nilsson, J. Lars G.

, p. 1475 - 1482 (2007/10/02)

Thirty compounds related to the selective dopamine-autoreceptor agonist 3-(3-hydroxyphenyl)-N-n-propylpiperidine have been synthesized and tested for central dopamine-autoreceptor stimulating activity.The 3-(3-hydroxyphenyl)piperidine moiety seems indispensable for high potency and selectivity.Introduction of an additional hydroxyl group into the 4-position of the aromatic ring gives a compound with dopaminergic activity but lacking selectivity for autoreceptors. 3-(3-Hydroxyphenyl)-N-n-propylpyrrolidine, 3-(3-hydroxy)-N-n-propylperhydroazepine, and 3-(3-hydroxyphenyl)quinuclidine were all inactive.The most potent compounds were the N-isopropyl-, N-n-butyl-, N-n-pentyl-, and N-phenethyl-substituted 3-(3-hydroxyphenyl)piperidine derivatives.None of the compounds investigated seemed to have central noradrenaline- or serotonin-receptor stimulating activity.

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