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81358-53-4

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81358-53-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81358-53-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,5 and 8 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81358-53:
(7*8)+(6*1)+(5*3)+(4*5)+(3*8)+(2*5)+(1*3)=134
134 % 10 = 4
So 81358-53-4 is a valid CAS Registry Number.

81358-53-4Relevant 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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