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129626-52-4

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129626-52-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129626-52-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,6,2 and 6 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 129626-52:
(8*1)+(7*2)+(6*9)+(5*6)+(4*2)+(3*6)+(2*5)+(1*2)=144
144 % 10 = 4
So 129626-52-4 is a valid CAS Registry Number.

129626-52-4Relevant articles and documents

ARYLATION OF FURAN COMPOUNDS BY ARENEDIAZONIUM SALTS

Obushak, N. D.,Ganushchak, N. I.,Lesyuk, A. I.,Dzikovskaya, L. M.,Kisilitsa, P. P.

, p. 748 - 753 (2007/10/02)

3-(5-Aryl-2-furyl)acrylic acids were obtained by the reaction of 5-arylfurfurals with malonic acid.They were arylated by diazonium salts with decarboxylation and the formation of 5-aryl-2-styrylfurans.The latter were also obtained by the interaction of furylacrolein with diazonium salts.This reaction also gave 3-(5-aryl-2-furyl)acroleins and the corresponding arylfurylacrylic acids, which were arylated again with the release of CO2 and the formation of 5-aryl-2-styrylfurans. 3-(5-Aryl-2-furyl)acroleins were also synthesized by the condensation of 5-arylfurfurals with acetaldehyde under phase-transfer conditions.The s-trans configuration of the furan ring and the exocyclic double bond were established in the obtained compounds by the PMR method.

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