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137147-02-5

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137147-02-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137147-02-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,1,4 and 7 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 137147-02:
(8*1)+(7*3)+(6*7)+(5*1)+(4*4)+(3*7)+(2*0)+(1*2)=115
115 % 10 = 5
So 137147-02-5 is a valid CAS Registry Number.

137147-02-5Relevant articles and documents

Synthesis of 1-(3'-azido-2',3'-dideoxy-α-L-threo-pentofuranosyl)thymine as a potential anti-HIV agent

Czernecki,Le Diguarher

, p. 683 - 686 (2007/10/02)

Starting from methyl 2,3,5-tri-O-benzoyl-α-L-arabinofuranoside, a multistep synthesis of the C-4' epimer of AZT is described. Glycosylation of silylated thymine with 2,3,5-tri-O-benzoyl-L-arabinofuranosyl acetate (5) affords the α-nucleoside 7 after debenzoylation. Deoxygenation at C-2' of the selectively protected 8, followed by displacement of a 3'-methanesulfonyl group by lithium azide leads to the title compound which did not exhibit antiviral activity against HIV-1.

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