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1309598-05-7

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1309598-05-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1309598-05-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,9,5,9 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1309598-05:
(9*1)+(8*3)+(7*0)+(6*9)+(5*5)+(4*9)+(3*8)+(2*0)+(1*5)=177
177 % 10 = 7
So 1309598-05-7 is a valid CAS Registry Number.

1309598-05-7Downstream Products

1309598-05-7Relevant articles and documents

Palladium-catalyzed direct 5-arylation of formyl- or acetyl-halothiophene derivatives

Beydoun, Kassem,Doucet, Henri

experimental part, p. 1749 - 1759 (2011/05/14)

Pd(OAc)2 was found to catalyze the direct arylation of some functionalized halothiophene derivatives allowing the synthesis in only one step of polyfunctionalized arylated thiophenes. In the presence of 2-acetyl-3-chlorothiophene, 2-acetyl-4-chlorothiophene, 2-acetyl-3- bromothiophene diethylacetal or 2-(4-bromothiophen-2-yl)-[1,3]dioxolane, and a variety of aryl bromides, the 5-arylation products were obtained in moderate to high yields employing only 0.5 mol% catalyst. On the other hand, the use of 2-formyl-3-chlorothiophene, 2-acetyl-3-bromothiophene or 2-formyl-3- bromothiophene gave disappointing results.

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