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129633-42-7

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129633-42-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129633-42-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,6,3 and 3 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 129633-42:
(8*1)+(7*2)+(6*9)+(5*6)+(4*3)+(3*3)+(2*4)+(1*2)=137
137 % 10 = 7
So 129633-42-7 is a valid CAS Registry Number.

129633-42-7Upstream product

129633-42-7Downstream Products

129633-42-7Relevant articles and documents

Halogenation using Quaternary Ammonium Polyhalides. Part 22. Selective Bromination of Aromatic Ethers with Benzyltrimethylammonium Tribromide

Kajigaeshi, Shoji,Moriwaki, Masayuki,Tanaka, Toshio,Fujisaki, Shizuo,Kakinami, Takaaki,Okamoto, Tsuyoshi

, p. 897 - 899 (2007/10/02)

The reaction of aromatic ethers with a stoicheiometric amount of benzyltrimethylammonium tribromide in dichloromethane-methanol or acetic acid-ZnCl2 under mild conditions gave, selectively, mono-, di-, or tri-bromo-substituted aromatic ethers in quantitative yields.

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