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187458-07-7

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187458-07-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 187458-07-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,4,5 and 8 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 187458-07:
(8*1)+(7*8)+(6*7)+(5*4)+(4*5)+(3*8)+(2*0)+(1*7)=177
177 % 10 = 7
So 187458-07-7 is a valid CAS Registry Number.

187458-07-7Relevant articles and documents

NMR studies of pyrimidinic nucleosides derived from 2,3-dideoxy-d-ribose with inhibitory activity on LINE-1 mobility

Banuelos-Sanchez, Guillermo,Franco-Montalban, Francisco,Tamayo, Juan A.

, p. 118 - 125 (2019/11/28)

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Synthesis of the Dideoxynucleosides ddC and CNT from Glutamic Acid, Ribonolactone, and Pyrimidine Bases

Okabe, Masami,Sun, Ruen-Chu,Tam, Steve Y.-K.,Todaro, Louis J.,Coffen, David L.

, p. 4780 - 4786 (2007/10/02)

2,3-Dideoxyribose in suitably protected form was prepared from glutamic acid and coupled with silylated cytosine to give a mixture of the α-and β-anomers of 2',3'-dideoxycitidine.The anomer ratio depended on the Lewis acid used in the coupling, with EtAlCl2 favoring the β-anomer ddC, a potent anti-HIV drug.Conjugate addition of cyanide to a 4-butenolide prepared from D-ribonolactone gave a mixture of (racemic) α- and β-3-cyanobutyrolactones.Both isomers were reduced to lactols and coupled with thymine to give α/β-anomer pairs.The α-cyano lactone, the struct ure of which was established by X-ray crystallography, afforded an authentic sample of the putative (but in fact inactive) anti-HIV substance known in AIDS research as CNT.

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