1276130-31-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1276130-31-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,6,1,3 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1276130-31:
(9*1)+(8*2)+(7*7)+(6*6)+(5*1)+(4*3)+(3*0)+(2*3)+(1*1)=134
134 % 10 = 4
So 1276130-31-4 is a valid CAS Registry Number.
1276130-31-4Relevant articles and documents
HETEROCYCLIC ANTIVIRAL COMPOUNDS
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Page/Page column 35, (2011/04/18)
The invention discloses 1-N-substituted-6-(hetero)aryl-1H-thieno[3,2-d]pyrimidin-4-one derivatives of formula wherein R1, R2, R3 and R4 are as defined herein that inhibit Hepatitis C virus NS5b polymerase inhibitors. Also disclosed are compositions and methods for treating an HCV infection and inhibiting HCV replication.