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188978-32-7

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188978-32-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188978-32-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,9,7 and 8 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 188978-32:
(8*1)+(7*8)+(6*8)+(5*9)+(4*7)+(3*8)+(2*3)+(1*2)=217
217 % 10 = 7
So 188978-32-7 is a valid CAS Registry Number.

188978-32-7Downstream Products

188978-32-7Relevant articles and documents

Cyclic HIV protease inhibitors: Design and synthesis of orally bioavailable, pyrazole P2/P2' cyclic ureas with improved potency

Han, Qi,Chang, Chong-Hwan,Li, Renhua,Ru, Yu,Jadhav, Prabhakar K.,Lam, Patrick Y. S.

, p. 2019 - 2028 (2007/10/03)

Highly potent HIV-1 protease (HIVPR) inhibitors have been designed and synthesized by introducing bidentate hydrogen-bonding oxime and pyrazole groups at the meta-position of the phenyl ring on the P2/P2' substituents of cyclic ureas. Nonsymmetrical cyclic ureas incorporating 3(1H)-pyrazolylbenzyl as P2 and hydrophilic functionalities as P2' show potent protease inhibition and antiviral activities against HIV and have good oral bioavailabilities. The X-ray structure of HIVPR-10A complex confirms that the two pyrazole rings of 10A form bidentate hydrogen bonds with the side-chain oxygen (C=O) and backbone nitrogen (N-H) of Asp30/30' of HIVPR.

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