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854428-57-2

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854428-57-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 854428-57-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,4,4,2 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 854428-57:
(8*8)+(7*5)+(6*4)+(5*4)+(4*2)+(3*8)+(2*5)+(1*7)=192
192 % 10 = 2
So 854428-57-2 is a valid CAS Registry Number.

854428-57-2Relevant articles and documents

Dichloromethane as a chlorination reagent for α-bromocarbonyl compounds in the presence of a copper catalyst

Takeuchi, Kentaro,Ishida, Syo,Nishikata, Takashi

, p. 644 - 646 (2017)

We found that dichloromethane is a powerful chlorinating reagent for the congested 3° and 2° Csp3Br bond of α-bromocarbonyl amides, esters, and ketones. In the presence of an appropriate copper complex as a catalyst, the desired chlorination occurred within an hour. Control experiments revealed that in situ-generated CuCl2 is a key chlorinating agent that reacts with the 3° or 2° alkyl radicals generated by the reaction between an α-bromocarbonyl compound and a Cu(I) salt.

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