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31913-37-8

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31913-37-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31913-37-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,9,1 and 3 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 31913-37:
(7*3)+(6*1)+(5*9)+(4*1)+(3*3)+(2*3)+(1*7)=98
98 % 10 = 8
So 31913-37-8 is a valid CAS Registry Number.

31913-37-8Relevant articles and documents

Transformations of gem-dichloroarylcyclopropanes in the reaction with NOCl·2SO3. Synthesis of 3-aryl-5-chloroisoxazoles

Bondarenko,Gavrilova,Murodov,Zefirov,Zyk

, p. 186 - 194 (2013/07/25)

Nitrosation with complex NOCl·2SO3 of gem-dichloroarylcyclopropanes containing acceptor substituents in the aromatic ring proceeded chemo- and regioselectively affording 3-aryl-5-chloroisoxazoles in high yields. The presence of donor substituents complicated the reaction by the occurrence of competing processes.

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