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198903-87-6

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  • 2,5,6,10,13-PENTAAZATETRADECANEDIOICACID,12-(1,1-DIMETHYLETHYL)-8-HYDROXY-3-(1-METHYLETHYL)-4,11-DIOXO-9-(PHENYLMETHYL)-6-[[4-(5-THIAZOLYL)PHENYL]METHYL]-,DIMETHYLESTER,(3S,8S,9S,12S)-

    Cas No: 198903-87-6

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198903-87-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 198903-87-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,9,0 and 3 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 198903-87:
(8*1)+(7*9)+(6*8)+(5*9)+(4*0)+(3*3)+(2*8)+(1*7)=196
196 % 10 = 6
So 198903-87-6 is a valid CAS Registry Number.

198903-87-6Downstream Products

198903-87-6Relevant articles and documents

New aza-dipeptide analogues as potent and orally absorbed HIV-1 protease inhibitors: Candidates for clinical development

Bold, Guido,F?ssler, Alexander,Capraro, Hans-Georg,Cozens, Robert,Klimkait, Thomas,Lazdins, Janis,Mestan, Jürgen,Poncioni, Bernard,R?sel, Johannes,Stover, David,Tintelnot-Blomley, Marina,Acemoglu, Figan,Beck, Werner,Boss, Eugen,Eschbach, Martin,Hürlimann, Thomas,Masso, Elvira,Roussel, Serge,Ucci-Stoll, Katharina,Wyss, Dominique,Lang, Marc

, p. 3387 - 3401 (2007/10/03)

On the basis of previously described X-ray studies of an enzyme/aza- dipeptide complex, aza-dipeptide analogues carrying N-(bis-aryl-methyl) substituents on the (hydroxethyl)hydrazine moiety have been designed and synthesized as HIV-1 protease inhibitors. By using either equally (12) or orthogonally (13) protected dipeptide isosteres, symmetrically and asymmetrically acylated aza-dipeptides can be synthesized. This approach led to the discovery of very potent inhibitors with antiviral activities (ED50) in the subnanomolar range. Acylation of the (hydroxethyl)hydrazine dipeptide isostere with the L-tert-leucine derivative 29 increased the oral bioavailability significantly when compared to the corresponding L-valine or L-isoleucine derivatives. The bis (L-tert-leucine) derivatives CGP 75355, CGP 73547, CGP 75136, and CGP 75176 combine excellent antiviral activity with high blood concentration after oral administration. Furthermore, they show no cross-resistance with saquinavir-resistant strains and maintain activity against indinavir-resistant ones. Consequently they qualify for further profiling as potential clinical candidates.

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