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817204-35-6

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817204-35-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 817204-35-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,7,2,0 and 4 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 817204-35:
(8*8)+(7*1)+(6*7)+(5*2)+(4*0)+(3*4)+(2*3)+(1*5)=146
146 % 10 = 6
So 817204-35-6 is a valid CAS Registry Number.

817204-35-6Relevant articles and documents

Method for synthesizing Sofosbuvir key intermediate

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Paragraph 0040-0045, (2019/05/08)

The invention provides a method for synthesizing a Sofosbuvir key intermediate. The method comprises the steps that alcohols and raw material compounds are added to a microwave reactor; the temperature of a system is gradually increased to a first tempera

METHODS FOR TREATING HCV

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, (2013/10/22)

This invention relates to combinations of therapeutic molecules useful for treating hepatitis C virus infection. The present invention relates to methods, uses, dosing regimens, and compositions.

Design, synthesis, and antiviral activity of 2′-deoxy-2′- fluoro-2′-C-methylcytidine, a potent inhibitor of hepatitis C virus replication

Clark, Jeremy L.,Hollecker, Laurent,Mason, J. Christian,Stuyver, Lieven J.,Tharnish, Phillip M.,Lostia, Stefania,McBrayer, Tamara R.,Schinazi, Raymond F.,Watanabe, Kyoichi A.,Otto, Michael J.,Furman, Phillip A.,Stec, Wojciech J.,Patterson, Steven E.,Pankiewicz, Krzysztof W.

, p. 5504 - 5508 (2007/10/03)

The pyrimidine nucleoside beta-D-2′-deoxy-2′-fluoro-2′-C- methylcytidine (1) was designed as a hepatitis C virus RNA-dependent RNA polymerase (HCV RdRp) inhibitor. The title compound was obtained by a DAST fluorination of N4-benzoyl-1-(2-methyl-3,5-di-O-benzoyl-β-D- arabinofuranosyl]cytosine (6) to provide N4-benzoyl-1-[2-fluoro-2- methyl-3,5-di-O-benzoyl-β-D-ribofuranosyl]cytosine (7a). The protected 2′-C-methylcytidine (7c) was obtained as a byproduct from the DAST fluorination and allowed for the preparation of two biologically active compounds from a common precursor. Compound 1 and 2′-C-methylcytidine were assayed in a subgenomic HCV replicon assay system and found to be potent and selective inhibitors of HCV replication. Compound 1 shows increased inhibitory activity in the HCV replicon assay compared to 2′-C-methylcytidine and low cellular toxicity.

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