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858255-21-7

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858255-21-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 858255-21-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,8,2,5 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 858255-21:
(8*8)+(7*5)+(6*8)+(5*2)+(4*5)+(3*5)+(2*2)+(1*1)=197
197 % 10 = 7
So 858255-21-7 is a valid CAS Registry Number.

858255-21-7Relevant articles and documents

Tricyclic pyrone derivatives as protease inhibitors and antiviral agents

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, (2008/06/13)

The present invention relates to novel substituted tricyclic pyrones and related structures which potently inhibit the HIV aspartyl protease blocking HIV infectivity. The tricyclic pyrone derivatives are useful in the development of therapies for the treatment of vital infections and diseases, including AIDS. The present invention is also directed to methods of synthesis of multifunctionalized tricyclic pyrones and of related structures.

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