Cas 137579-07-8,4,5-diphenyl-4-hydroxy-4,5-dihydrofuran-2,3-dicarboxylic acid di-tert.butyl ester

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Check Digit Verification of cas no

The CAS Registry Mumber 137579-07-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,7 and 9 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137579-07:
(8*1)+(7*3)+(6*7)+(5*5)+(4*7)+(3*9)+(2*0)+(1*7)=158
158 % 10 = 8
So 137579-07-8 is a valid CAS Registry Number.

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137579-07-8Relevant academic research and scientific papers

An Improved Procedure for the Preparation of Substituted 4-Hydroxy-4,5-dihydrofurans

Jauch, Johann,Schurig, Volker

, p. 4687 - 4690 (1991)

An improved, highly diastereoselective procedure is described for the preparation of substituted 4-hydroxy-4,5-dihydrofurans 4 which are structural elements that occur in azadirachtin and several other biologically active natural products. Key Words: Acetylene-dicarboxylic-acid diesters; α-hydroxy-ketones; substituted 4-hydroxy-4,5-dihydrofurans; LiBr-activated cyclization; natural products

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