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307531-57-3

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307531-57-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 307531-57-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,7,5,3 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 307531-57:
(8*3)+(7*0)+(6*7)+(5*5)+(4*3)+(3*1)+(2*5)+(1*7)=123
123 % 10 = 3
So 307531-57-3 is a valid CAS Registry Number.

307531-57-3Relevant articles and documents

Wittig reaction of a series of diazodiketones: Synthesis and structure of fluorine-containing vinyldiazoketones

Zakharova, Valerija M.,Hennig, Lothar,Nikolaev, Valerij A.

, p. 2871 - 2874 (2005)

Reaction of (alkyloxycarbonyl)- and (benzoyl)- methylenetriphenylphosphoranes with fluorine-containing diazodiketones leads to olefination of the perfluoroacyl carbonyl group and formation of fluorinated vinyldiazoketones. The analogous reaction with non-

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