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291273-95-5

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291273-95-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 291273-95-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,1,2,7 and 3 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 291273-95:
(8*2)+(7*9)+(6*1)+(5*2)+(4*7)+(3*3)+(2*9)+(1*5)=155
155 % 10 = 5
So 291273-95-5 is a valid CAS Registry Number.

291273-95-5Upstream product

291273-95-5Downstream Products

291273-95-5Relevant articles and documents

Palladium-catalyzed C-H homocoupling of bromothiophene derivatives and synthetic application to well-defined oligothiophenes

Takahashi, Masabumi,Masui, Kentaro,Sekiguchi, Hiroki,Kobayashi, Nobuhiko,Mori, Atsunori,Funahashi, Masahiro,Tamaoki, Nobuyuki

, p. 10930 - 10933 (2007/10/03)

Synthesis of oligothiophenes of well-defined structures that possess 2-8 thiophene units is performed with a new synthetic strategy involving C-H homocoupling of bromothiophenes and cross-coupling with organostannanes. Tolerance of the carbon-bromine bond to the palladium-catalyzed C-H homocoupling results in oligothiophenes bearing C-Br bonds at the terminal thiophene rings, which allow further transformation by the catalysis of a transition-metal complex.

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