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138809-95-7

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138809-95-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138809-95-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,0 and 9 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 138809-95:
(8*1)+(7*3)+(6*8)+(5*8)+(4*0)+(3*9)+(2*9)+(1*5)=167
167 % 10 = 7
So 138809-95-7 is a valid CAS Registry Number.

138809-95-7Relevant articles and documents

Synthesis of C-Nucleosides via Radical Coupling Reaction

Togo, Hideo,Ishigami, Sachiko,Fujii, Misa,Ikuma, Toshihiro,Yokoyama, Masataka

, p. 2931 - 2942 (2007/10/02)

Photolysis of O-acyl derivatives of N-hydroxy-2-thiopyridone, prepared from tetrahydrofuran-2-carboxylic acid, D-ribofuranosylmethanoic acid, and D-ribopyranosylmethanoic acid, gave the corresponding C-nucleoside derivatives in the presence of heteroaromatic compounds via radical pathways.The essential step in this method is a radical coupling reaction of D-ribofuranosyl radical or D-ribopyranosyl radical and some heteroaromatic bases.This is a new method for the preparation of C-nucleosides using sugar carboxylic acids.

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