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254439-45-7

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254439-45-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 254439-45-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,4,4,3 and 9 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 254439-45:
(8*2)+(7*5)+(6*4)+(5*4)+(4*3)+(3*9)+(2*4)+(1*5)=147
147 % 10 = 7
So 254439-45-7 is a valid CAS Registry Number.

254439-45-7Upstream product

254439-45-7Downstream Products

254439-45-7Relevant articles and documents

ALPHA-KETOAMIDE DERIVATIVES

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, (2008/06/13)

The invention relates to α-ketoamides of the general formula wherein R 1to R 12have the significances given in the description, and their salts. The α-ketoamide derivatives provided by the present invention inhibit proteinases of viral origin, such as HCV protease, and can be used in the treatment of viral infections, especially viral infections caused by hepatitis C, hepatitis G and human GB viruses.

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