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39664-46-5

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39664-46-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39664-46-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,6,6 and 4 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 39664-46:
(7*3)+(6*9)+(5*6)+(4*6)+(3*4)+(2*4)+(1*6)=155
155 % 10 = 5
So 39664-46-5 is a valid CAS Registry Number.

39664-46-5Relevant articles and documents

"conjugate" substitution of hydrogen in the methyl group of pentabromotoluene in the presence of strong bases

Shishkin,Vakaeva,Butin

, p. 1243 - 1246 (2008/02/03)

The reactions of pentabromotoluene with i-PrONa or t-BuONa in pyridine give N-(pentabromobenzyl)pyridinium bromide and a mixture of isomeric tetrabromotoluenes. In the presence of bromine or carbon tetrabromide, the reductive debromination is blocked, and the reactions involve exclusively substitution of hydrogen in the methyl group of pentabromotoluene by the pyridinium residue.

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