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1173695-22-1

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1173695-22-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1173695-22-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,3,6,9 and 5 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1173695-22:
(9*1)+(8*1)+(7*7)+(6*3)+(5*6)+(4*9)+(3*5)+(2*2)+(1*2)=171
171 % 10 = 1
So 1173695-22-1 is a valid CAS Registry Number.

1173695-22-1Relevant articles and documents

Reaction kinetics and mechanism of sulfuric acid-catalyzed acetolysis of acylated methyl l-ribofuranosides

Forsman, Jonas J.,Waerna, Johan,Murzin, Dmitry Yu,Leino, Reko

experimental part, p. 5666 - 5676 (2010/03/03)

The mechanism of the sulfuric acid-catalyzed acetolysis of methyl 2,3,5-tri-O-acetyl- and methyl 2,3,5-tri-O-benzoyl-Lribofuranosides and the accompanying anomerization of both the starting material and the 1,2,3,5-tetra-O-acetyl- and 1-O-acetyl-2,3,5-tri-O-benzoyl-L-ribofuranoses formed was investigated. The progress of the reactions was followed by 1H NMR spectroscopy and the rate constants for the reactions were determined for a proposed kinetic model. The role of H+ and Ac + as the catalytically active species was clarified, proving that the anomerization of the acylated methyl furanosides is activated by protonation, while, on the contrary, the anomerization of the 1-O-acetyl ribofuranoses is activated by the acetyl cation. The anomerization of the acylated methyl furanosides was verified to be activated on the ring oxygen leading to endocyclic CO-bond rupture while the 1O-acetyl ribofuranoses are activated on the acetyloxy group on C(1) leading to exocyclic cleavage.

METHOD FOR PRODUCTION OF FURANOSE DERIVATIVE

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Page/Page column 13, (2009/10/06)

An object of the present invention is to provide a industrially appropriate method for producing the β-anomers of ribofuranose derivatives in a highly selective manner at a high yield. The present invention provides a method for producing ribofuranose derivatives wherein β-anomers is precipitated from among the generated furanose derivatives by controlling the amount of a reaction reagent used and/or using a poor solvent in the acetolysis reactions of 2,3,5-tri-O-acyl-1-O-alkyl-ribofuranose and 2,3-di-O-acyl-1-O-alkyl-5-deoxy-ribofuranose.

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