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3',4''-dioctyl-2,2':5',2'':5'',2'''-quaterthiophene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

655241-79-5

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655241-79-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 655241-79-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,5,2,4 and 1 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 655241-79:
(8*6)+(7*5)+(6*5)+(5*2)+(4*4)+(3*1)+(2*7)+(1*9)=165
165 % 10 = 5
So 655241-79-5 is a valid CAS Registry Number.

655241-79-5Upstream product

655241-79-5Relevant academic research and scientific papers

Palladium-catalyzed coupling reactions towards the synthesis of well-defined thiophene-oligomers

Hassan, Jwanro,Gozzi, Christel,Schulz, Emmanuelle,Lemaire, Marc

, p. 280 - 283 (2003)

Heck- and Ullmann-type palladium-catalyzed reactions were used in order to perform the synthesis of 3′,4″-dioctyl-2,2′, 5′2″,5″,2′″-tetrathienyl. The desired oligothiophene was synthesized in five steps with a total yield of 38% by a Heck-type reaction of bromo-derivatives and a yield of 45% by an Ullmann-type reaction of iodo-precursors.

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