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82439-20-1

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82439-20-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 82439-20-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,4,3 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 82439-20:
(7*8)+(6*2)+(5*4)+(4*3)+(3*9)+(2*2)+(1*0)=131
131 % 10 = 1
So 82439-20-1 is a valid CAS Registry Number.

82439-20-1Downstream Products

82439-20-1Relevant articles and documents

Preparation and Antiinflammatory Activity of 2- and 4-Pyridones

Pierce, James Benjamin,Ariyan, Zaven S.,Ovenden, Gaye Stuart

, p. 131 - 136 (1982)

Several N-alkyl- and N-arylacetoamides have been self-condensed to form pyridones.N-Alkylacetoacetamides give 2-pyridones, while N-arylacetoamides give 4-pyridones.In an attempt to develop nonacidic, nonsteroidal antiinflammatory agents, the pyridones were tested in a carrageenan-induced pedal edema assay in rats.While the 2-pyridones were not active, 9 of 17 4-pyridones tested were active, and one compound (4g) had antiinflammatory efficacy in a dose-response assay (ED50 values).Most compounds were considered nontoxic by determination of approximate LD50 values in mice by a standard multidimensional observational assay.

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