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108643-97-6

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108643-97-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 108643-97-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,8,6,4 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 108643-97:
(8*1)+(7*0)+(6*8)+(5*6)+(4*4)+(3*3)+(2*9)+(1*7)=136
136 % 10 = 6
So 108643-97-6 is a valid CAS Registry Number.

108643-97-6Relevant articles and documents

The Preparation of Some β-Sulfonylacrylate Thioesters and β-Sulfonylvinyl Ketones

Haynes, Richard K.,Vonwiller, Simone C.,Stokes, John P.,Merlino, Louisa M.

, p. 881 - 895 (2007/10/02)

β-Sulfonylacrylate phenyl and t-butyl thioesters, and β-sulfonylvinyl ketones have been prepared by oxidation of the corresponding β-aryl- and β-alkyl-thio compounds.In one case the β-sulfonylvinyl ketone was obtained from an epoxy sulfone.The β-aryl- and β-alkyl-thio compounds were obtained by chlorination-dehydrochlorination of saturated precursors.The reactions of 3-(phenylthio)propionyl chloride with organocadmium and Grignard reagents were used to prepare some of the saturated precursors of the β-sulfonylvinyl ketones.

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