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31836-20-1

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31836-20-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31836-20-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,8,3 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 31836-20:
(7*3)+(6*1)+(5*8)+(4*3)+(3*6)+(2*2)+(1*0)=101
101 % 10 = 1
So 31836-20-1 is a valid CAS Registry Number.

31836-20-1Relevant articles and documents

Preparation of alkyl and aryl chlorodifluoromethyl ethers using BrF 3

Hagooly, Youlia,Sasson, Revital,Welch, Michael J.,Rozen, Shlomo

experimental part, p. 2875 - 2880 (2009/04/07)

Both alkyl and aryl chlorothioformates could readily be obtained from the corresponding alcohols and thiophosgene. These families of compounds were treated with BrF3 to form the corresponding alkyl and aryl chlorodifluoromethyl ethers in 60-85% yields. The method is suitable for constructing a variety of aliphatic as well as electron-deficient aromatic chlorodifluoromethyl ethers. The reactions proceed under mild conditions and short reaction times. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.

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