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254732-53-1

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254732-53-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 254732-53-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,4,7,3 and 2 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 254732-53:
(8*2)+(7*5)+(6*4)+(5*7)+(4*3)+(3*2)+(2*5)+(1*3)=141
141 % 10 = 1
So 254732-53-1 is a valid CAS Registry Number.

254732-53-1Relevant articles and documents

First synthesis of 3-aryl-5-dichloromethyl-2-pyrazolines. The electrochemical generation of 2,2-dichlorovinylacetophenones as a key step

Guirado, Antonio,Martiz, Bruno,Andreu, Raquel

, p. 8523 - 8526 (2004)

An efficient synthetic route to the title compounds has been established. Chloralacetophenones 2 were prepared by treatment of acetophenones 1 with anhydrous chloral. Dehydration of intermediates 2 under acidic conditions yielded 2,2,2-trichloroethylidene

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