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251346-03-9

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251346-03-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 251346-03-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,3,4 and 6 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 251346-03:
(8*2)+(7*5)+(6*1)+(5*3)+(4*4)+(3*6)+(2*0)+(1*3)=109
109 % 10 = 9
So 251346-03-9 is a valid CAS Registry Number.

251346-03-9Relevant articles and documents

Efficient radical oxygenation of α-lodocarboxylic acid derivatives

Kihara, Nobuhiro,Ollivier, Cyril,Renaud, Philippe

, p. 1419 - 1422 (1999)

(equation presented) Treatment of α-iodocarboxylic acid derivatives with 2 equiv of triethylborane under oxygen atmosphere gives the corresponding α-hydroxy add derivatives This method is based on an iodine atom transfer from the ethyl radical, generated by the reaction of riethylborane and oxygen, with the α-iodocarbonyl compound. It offers several advantages over classical ionic substitution reactions: no elimanation product is observed tertiary iodides are efficiently converted to alcohos, and finally, this one-step procedure is working with substrates sensitive to nucleophiles.

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