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81378-80-5

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81378-80-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81378-80-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,7 and 8 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81378-80:
(7*8)+(6*1)+(5*3)+(4*7)+(3*8)+(2*8)+(1*0)=145
145 % 10 = 5
So 81378-80-5 is a valid CAS Registry Number.

81378-80-5Relevant articles and documents

Targeting the Main Protease of SARS-CoV-2: From the Establishment of High Throughput Screening to the Design of Tailored Inhibitors

Breidenbach, Julian,Lemke, Carina,Pillaiyar, Thanigaimalai,Sch?kel, Laura,Al Hamwi, Ghazl,Diett, Miriam,Gedschold, Robin,Geiger, Nina,Lopez, Vittoria,Mirza, Salahuddin,Namasivayam, Vigneshwaran,Schiedel, Anke C.,Sylvester, Katharina,Thimm, Dominik,Vielmuth, Christin,Phuong Vu, Lan,Zyulina, Maria,Bodem, Jochen,Gütschow, Michael,Müller, Christa E.

supporting information, p. 10423 - 10429 (2021/04/29)

The main protease of SARS-CoV-2 (Mpro), the causative agent of COVID-19, constitutes a significant drug target. A new fluorogenic substrate was kinetically compared to an internally quenched fluorescent peptide and shown to be ideally suitable for high throughput screening with recombinantly expressed Mpro. Two classes of protease inhibitors, azanitriles and pyridyl esters, were identified, optimized and subjected to in-depth biochemical characterization. Tailored peptides equipped with the unique azanitrile warhead exhibited concomitant inhibition of Mpro and cathepsin L, a protease relevant for viral cell entry. Pyridyl indole esters were analyzed by a positional scanning. Our focused approach towards Mpro inhibitors proved to be superior to virtual screening. With two irreversible inhibitors, azanitrile 8 (kinac/Ki=37 500 m?1 s?1, Ki=24.0 nm) and pyridyl ester 17 (kinac/Ki=29 100 m?1 s?1, Ki=10.0 nm), promising drug candidates for further development have been discovered.

Azadipeptide nitriles: Highly potent and proteolytically stable inhibitors of papain-like cysteine proteases

Loeser, Reik,Frizler, Maxim,Schilling, Klaus,Guetschow, Michael

supporting information; experimental part, p. 4331 - 4334 (2009/02/08)

(Chemical Presented) Nitrogen instead of carbon: Azadipeptide nitriles resulting from CH/N exchange in the P1 position (see picture) are hitherto unknown. To access these compounds by conversion of amino acid-derived hydrazides with cyanogen bromide both nitrogen atoms of the hydrazide must be substituted. Despite a methylated P2-P1 peptide bond, the azadipeptide nitriles show a strong inhibitory activity against cysteine proteases, and a high stability towards chymotryptic hydrolysis.

Synthetic studies on enkephalin analogs. II. Enhanced analgesic activity of H-Tyr-D-Ala-Gly-Phe-NHNH-CO-CH2CH3 following n-methylation of Tyr and Phe

Shinagawa,Fujino,Ishii,Kawai

, p. 3639 - 3645 (2007/10/02)

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