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117992-53-7

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117992-53-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117992-53-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,9 and 2 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 117992-53:
(8*1)+(7*1)+(6*7)+(5*9)+(4*9)+(3*2)+(2*5)+(1*3)=157
157 % 10 = 7
So 117992-53-7 is a valid CAS Registry Number.

117992-53-7Relevant articles and documents

A simple and efficient synthesis of trihalomethyl and dihalonitromethyl aryl sulfones

Borys, Krzysztof M.,Korzynski, MacIej D.,Ochal, Zbigniew

, p. 6606 - 6610,5 (2012/12/12)

A method for the preparation of aryl trihalomethyl sulfones - active biocidal agents - with identical or different halogens is presented. The synthesis is based on the reaction of aryl methyl, aryl halomethyl, or aryl nitromethyl sulfones with sodium hypohalite. The method is simple in implementation, does not necessarily require the use of organic solvents, and selectively affords the products in good to excellent yields. Notably, it allows the preparation of the hitherto unknown phenyl trihalomethyl sulfone with three different halogens: fluorine, chlorine, and bromine.

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