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1256383-55-7

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1256383-55-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1256383-55-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,6,3,8 and 3 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1256383-55:
(9*1)+(8*2)+(7*5)+(6*6)+(5*3)+(4*8)+(3*3)+(2*5)+(1*5)=167
167 % 10 = 7
So 1256383-55-7 is a valid CAS Registry Number.

1256383-55-7Relevant articles and documents

FUSED RING COMPOUNDS AS HEPATITIS C VIRUS INHIBITORS, PHARMACEUTICAL COMPOSITIONS AND USES THEREOF

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Paragraph 00338; 00345, (2014/06/23)

Provided are fused tricyclic compounds effective to inhibit the function of the NS5A protein of formula (I), wherein X, X', Y, Y', A, A',Q1, Q2, R1-R4, X4, R5a, f and W are defined as in the description. Also provided herein are pharmaceutical compositions thereof, and uses in the manufacture of a medicament for treating HCV infection or a HCV disorder thereof.

Discovery of ledipasvir (GS-5885): A potent, once-daily oral NS5A inhibitor for the treatment of hepatitis C virus infection

Link, John O.,Taylor, James G.,Xu, Lianhong,Mitchell, Michael,Guo, Hongyan,Liu, Hongtao,Kato, Darryl,Kirschberg, Thorsten,Sun, Jianyu,Squires, Neil,Parrish, Jay,Keller, Terry,Yang, Zheng-Yu,Yang, Chris,Matles, Mike,Wang, Yujin,Wang, Kelly,Cheng, Guofeng,Tian, Yang,Mogalian, Erik,Mondou, Elsa,Cornpropst, Melanie,Perry, Jason,Desai, Manoj C.

, p. 2033 - 2046 (2014/04/03)

A new class of highly potent NS5A inhibitors with an unsymmetric benzimidazole-difluorofluorene-imidazole core and distal [2.2.1]azabicyclic ring system was discovered. Optimization of antiviral potency and pharmacokinetics led to the identification of 39 (ledipasvir, GS-5885). Compound 39 (GT1a replicon EC50 = 31 pM) has an extended plasma half-life of 37-45 h in healthy volunteers and produces a rapid >3 log viral load reduction in monotherapy at oral doses of 3 mg or greater with once-daily dosing in genotype 1a HCV-infected patients. 39 has been shown to be safe and efficacious, with SVR12 rates up to 100% when used in combination with direct-acting antivirals having complementary mechanisms.

HEPATITIS C INHIBITOR COMPOUNDS

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, (2011/08/21)

Compounds of Formula (I): wherein R1, R2, RA, RB, Z1, Z2, Z3, Z4, Z5 and Z6 are defined herein. The compounds are useful as inhibitors of the function of NS5A protein encoded by HCV for the treatment of hepatitis C viral infection.

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