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21092-27-3

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21092-27-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21092-27-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,9 and 2 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 21092-27:
(7*2)+(6*1)+(5*0)+(4*9)+(3*2)+(2*2)+(1*7)=73
73 % 10 = 3
So 21092-27-3 is a valid CAS Registry Number.

21092-27-3Relevant articles and documents

Remarkable conversion of 2-thioxo-2,3-dihydroquinazolin-4(1H)-ones into the corresponding quinazoline-2,4(1H,3H)-diones: Spectroscopic analysis and X-ray crystallography

El-Azab, Adel S.,Khalil, Nasr Y.,Abdel-Aziz, Alaa A.-M.

, (2021/04/26)

A simple and efficient new synthetic method to obtain 3-substituted quinazolin-2,4-diones 9.16 by the reaction of 3-substituted 2- thioxo-quinazolin-4-ones 1.8 with sodamide under mild conditions was presented. The structure of the newly synthesized compounds was determined by infrared spectroscopy, UV-visible spectroscopy, nuclear magnetic resonance, and single-crystal X-ray crystallographic analysis. The crystal structure of 6-methyl-3-phenylquinazoline-2,4(1H,3H)-dione (11) [C15H12N2O2: MF. 252.27, triclinic, P-1, a = 7.8495 (13) ?, b= 12.456 (2) ?, c = 13.350 (2) ?, α = 103.322 (3)°, β = 90.002 (3)°, γ = 102.671 (4)°, V. 1237.5 (3) ?3, Z= 4, R = 0.0592, wR= 0.1699, S= 1.039] was determined. In the crystal cell, two identical conformers of compound 11 were found connected by intramolecular hydrogen bonds, responsible for the favourable occurrence of these two independent molecules.

Development of (E)-2-((1,4-Dimethylpiperazin-2-ylidene)amino)-5-nitro-N-phenylbenzamide, ML336: Novel 2-Amidinophenylbenzamides as Potent Inhibitors of Venezuelan Equine Encephalitis Virus

Schroeder, Chad E.,Yao, Tuanli,Sotsky, Julie,Smith, Robert A.,Roy, Sudeshna,Chu, Yong-Kyu,Guo, Haixun,Tower, Nichole A.,Noah, James W.,McKellip, Sara,Sosa, Melinda,Rasmussen, Lynn,Smith, Layton H.,White, E. Lucile,Aubé, Jeffrey,Jonsson, Colleen B.,Chung, Donghoon,Golden, Jennifer E.

, p. 8608 - 8621 (2014/12/11)

Venezuelan equine encephalitis virus (VEEV) is an emerging pathogenic alphavirus that can cause significant disease in humans. Given the absence of therapeutic options available and the significance of VEEV as a weaponized agent, an optimization effort wa

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