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82959-21-5

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82959-21-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 82959-21-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,9,5 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 82959-21:
(7*8)+(6*2)+(5*9)+(4*5)+(3*9)+(2*2)+(1*1)=165
165 % 10 = 5
So 82959-21-5 is a valid CAS Registry Number.

82959-21-5Relevant articles and documents

A NEW METHOD FOR THE PREPARATION OF α-(PERFLUOROALKYL) CARBONYL AND γ-(PERFLUOROALKYL)-α,β-UNSATURATED CARBONYL COMPOUNDS

Umemoto, Teruo,Kuriu, Yuriko,Nakayama, Shin-ichi,Miyano, Osamu

, p. 1471 - 1474 (2007/10/02)

RfI(Ph)OSO2CF3 or RfI(Ph)OSO3H smoothly reacted with various trimethylsilyl enol ethers under mild conditions to give α(perfluoroalkyl) carbonyl and γ=)perfluoroalkyl)-α,β-unsaturated carbonyl compounds in high yields.

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