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111661-72-4

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111661-72-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 111661-72-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,6,6 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 111661-72:
(8*1)+(7*1)+(6*1)+(5*6)+(4*6)+(3*1)+(2*7)+(1*2)=94
94 % 10 = 4
So 111661-72-4 is a valid CAS Registry Number.

111661-72-4Downstream Products

111661-72-4Relevant articles and documents

On the Reaction of Silyl Enol Ethers with Activated Sulfoxides

Hartke, Klaus,Teuber, Dorothee

, p. 225 - 230 (2007/10/02)

Silyl enol ethers react with sulfoxides in the presence of trifluoroacetic anhydride to give α-sulfonio carbonyl compounds, which have been isolated as perchlorates or tetraphenylborates.This transformation has been studied with the silyl enol ethers of cyclopentanone, cyclohexanone, and indanone as well as with some (silyloxy)butadienes.

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