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801281-89-0

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801281-89-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 801281-89-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,1,2,8 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 801281-89:
(8*8)+(7*0)+(6*1)+(5*2)+(4*8)+(3*1)+(2*8)+(1*9)=140
140 % 10 = 0
So 801281-89-0 is a valid CAS Registry Number.

801281-89-0Relevant articles and documents

Synthesis of 2-(4-isopropylthiazol-2-yl)-7-methoxy-8-methylquinolin-4-ol; A quinoline building block for simeprevir synthesis

Rádl, Stanislav,Rezková, Hana,Obadalová, Iva,Srbek, Jan,B?ichá?, Ji?í,Pekárek, Tomá?

, p. 899 - 908 (2014/04/03)

Two synthetic approaches to the achiral quinoline fragment of simeprevir are described. Both approaches are based on the synthesis of methyl 4-hydroxy-7-methoxy-8-methylquinoline-2-carboxylate, protection of its 4-hydroxyl group, and construction of the thiazole ring from the ester group at the 2-position. The last step is acid deprotection of the 4-hydroxyl protecting group. Georg Thieme Verlag Stuttgart. New York.

HEPATITIS C INHIBITOR COMPOUNDS

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Page 39, (2008/06/13)

Compounds of formula (I): wherein B, X, R3, L0, L1, L2, R2, R1 and RC are defined herein. The compounds are useful as inhibitors of HCV NS3 protease for the treatment of hepatitis C viral infection.

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