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194856-61-6

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194856-61-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 194856-61-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,8,5 and 6 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 194856-61:
(8*1)+(7*9)+(6*4)+(5*8)+(4*5)+(3*6)+(2*6)+(1*1)=186
186 % 10 = 6
So 194856-61-6 is a valid CAS Registry Number.

194856-61-6Upstream product

194856-61-6Relevant articles and documents

Synthesis of 2-acetylenic carboxylic acids, 1-sulfinyl and 1-sulfonyl- 2-ketones from 2-acetylenic phenyl sulfides

Fortes, Carlos C.,Garrote, Clevia F.D.

, p. 2993 - 3026 (2007/10/03)

Monochlorination at the 1-position with sulfuryl chloride, followed by methanolysis converted 2-acetylenic phenyl sulfides into 1-methoxy-2- acetylenic phenyl sulfides. Oxidation with chromic acid gave 2-acetylenic carboxylic acids. Oxidation of 2-acetylenic phenyl sulfides with Oxone and hydrogen peroxide in acetic acid gave the corresponding sulfoxides and sulfones respectively. Diethylamine addition to the triple bond produced enamines which were hydrolyzed with aqueous hydrochloric acid to the corresponding 1-sulfinyl and 1-sulfonyl-2-ketones.

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