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2,3,4,5-tetrakis(4-ethoxycarbonylphenyl)thiophene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

131731-70-9

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131731-70-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131731-70-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,7,3 and 1 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 131731-70:
(8*1)+(7*3)+(6*1)+(5*7)+(4*3)+(3*1)+(2*7)+(1*0)=99
99 % 10 = 9
So 131731-70-9 is a valid CAS Registry Number.

131731-70-9Downstream Products

131731-70-9Relevant academic research and scientific papers

Palladium-catalyzed perarylation of 3-thiophene- and 3-furancarboxylic acids accompanied by C-H bond cleavage and decarboxylation

Nakano, Masaya,Tsurugi, Hayato,Satoh, Tetsuya,Miura, Masahiro

scheme or table, p. 1851 - 1854 (2009/04/10)

3-Thiophene- and 3-furancarboxylic acids efficiently undergo perarylation accompanied by cleavage of the three C-H bonds and decarboxylation upon treatment with excess aryl bromides in the presence of a palladium catalyst to give the corresponding tetraarylated products in good yields.

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