1257831-80-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1257831-80-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,8,3 and 1 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1257831-80:
(9*1)+(8*2)+(7*5)+(6*7)+(5*8)+(4*3)+(3*1)+(2*8)+(1*0)=173
173 % 10 = 3
So 1257831-80-3 is a valid CAS Registry Number.
1257831-80-3Relevant articles and documents
HETEROCYCLIC ANTIVIRAL COMPOUNDS
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Page/Page column 36, (2010/12/29)
Compounds having the formula I wherein wherein R1, R2, R3, R4, X1, X2, X3 and X4 and as defined herein are Hepatitis C virus NS5b polymerase inhibitors. Also disclosed are compositions and methods for treating an HCV infection and inhibiting HCV replication.