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126956-59-0

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126956-59-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 126956-59-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,6,9,5 and 6 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 126956-59:
(8*1)+(7*2)+(6*6)+(5*9)+(4*5)+(3*6)+(2*5)+(1*9)=160
160 % 10 = 0
So 126956-59-0 is a valid CAS Registry Number.

126956-59-0Relevant articles and documents

Enantioselective Oxidation of β-Hydroxythioethers. Synthesis of Optically Active Alcohols and Epoxides

Conte, V.,Furia, F. Di,Licini, G.,Modena, G.,Sbampato, G.,Valle, G.

, p. 257 - 276 (2007/10/02)

Optically pure β-hydroxysulfoxides may be obtained by direct oxidation of the parent thioethers with the modified Sharpless reagent developed in our laboratory.Necessary requisites for a successful asymmetric oxidation are both the protection of the OH function and the largest possible difference in size of the two groups linked to the thioether sulfur.This latter condition is fulfilled by using S-methyl derivatives.Examples referring to the oxidation of various S-methyl-β-hydroxythioethers, characterized by e.e. values up to 80percent, which may be further increased (>98percent) by crystallization, are presented.Results concerning the synthesis of optically active epoxides and alcohols starting from β-hydroxysulfoxides are also presented which, in some cases, allows the absolute configuration of the parent sulfoxide to be established.

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