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221218-91-3

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221218-91-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221218-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,2,1 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 221218-91:
(8*2)+(7*2)+(6*1)+(5*2)+(4*1)+(3*8)+(2*9)+(1*1)=93
93 % 10 = 3
So 221218-91-3 is a valid CAS Registry Number.

221218-91-3Relevant articles and documents

Synthesis and biological evaluation of 3,4-diaryloxazolones: A new class of orally active cyclooxygenase-2 inhibitors

Puig, Carles,Miralpeix, Montserrat,Puig, Jaume,Beleta, Jordi,Huerta, Josep M.,López, Manel,Segarra, Victor,Ryder, Hamish,Palacios, José M.,Crespo, María I.,Godessart, Núria,Feixas, Joan,Ibarzo, Javier,Jiménez, Juan-Miguel,Soca, Lídia,Cardelús, Ignasi,Heredia, Ascensión

, p. 214 - 223 (2007/10/03)

A series of 3,4-diaryloxazolones were prepared and evaluated for their ability to inhibit cyclooxygenase-2 (COX-2). Extensive structure-activity relationship work was carried out within this series, and a number of potent and selective COX-2 inhibitors we

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