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203439-58-1

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203439-58-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 203439-58-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,4,3 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 203439-58:
(8*2)+(7*0)+(6*3)+(5*4)+(4*3)+(3*9)+(2*5)+(1*8)=111
111 % 10 = 1
So 203439-58-1 is a valid CAS Registry Number.

203439-58-1Downstream Products

203439-58-1Relevant articles and documents

Novel cyclic compounds as potent phosphodiesterase 4 inhibitors

He, Wei,Huang, Fu-Chih,Hanney, Barbara,Souness, John,Miller, Bruce,Liang, Guyan,Mason, Jon,Djuric, Stevan

, p. 4216 - 4223 (2007/10/03)

The synthesis and biological activity of a novel series of 2,2- disubstituted indan-1,3-dione-based PDE4 inhibitors are described. This structurally unique class of PDE4 inhibitors is markedly different from the known PDE4 inhibitors such as RP 73401 (2) and CDP 840 (3). Structure- activity relationship (SAR) studies led to the identification of inhibitors with nanomolar potency and oral activity in a murine endotoxemia model for TNF-α inhibition. Unlike other classical PDE4 inhibitors, several analogues were found to be nonemetic in a canine emesis model at intravenous doses of up to 3 mg/kg.

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