scholarly journals Synthesis of Silver (I) Coordination of Aspirinate Azo Ligands as Potential Antibacterial Agents

2021 ◽  
Vol 411 ◽  
pp. 17-24
Author(s):  
Nur Arif Mortadza ◽  
Zainab Ngaini ◽  
Maya Asyikin Mohamad Arif
Keyword(s):  
Antibacterial Agents ◽  
Bacterial Resistance ◽  
Kinetic Method ◽  
Antibacterial Properties ◽  
Coupling Reaction ◽  
Antimicrobial Drugs ◽  
E Coli ◽  
Diazo Coupling ◽  
Pharmaceutical Industries ◽  
Diazo Coupling Reaction

The rise of antimicrobial resistance for infectious bacteria has become an alarming issue to human health. New antimicrobial drugs are in dire need and pivotal to overcome this issue. In this study, aspirinate azo ligands bearing different halogens L1-5 has been prepared via diazo-coupling reaction. The ligands L1-5 were coordinated with silver, Ag (I) metal to produce Ag (I) aspirin-azo complexes C1-5. The antibacterial properties of L1-5 and C1-5 were evaluated against Staphylococcus aureus and Escherichia coli using turbidimetric kinetic method. The complexes C1-5 showed comparable growth inhibition activity towards E. coli (MIC 82-105 ppm) and S. aureus (MIC 80-105 ppm) compared to ligands L1-5 with E. coli (MIC 83-200 ppm), S. aureus (80-131 ppm) and ampicillin (MIC 93 and 124 ppm, respectively). The excellent bacterial resistance of both L1-5 and C1-5 indicates the potential of aspirinate azo and their complexes as new antibacterial agents, which significantly benefit to the pharmaceutical industries.

scholarly journals A multicommuted flow analysis method for the photometric determination of amoxicillin in pharmaceutical formulations using a diazo coupling reaction

2011 ◽  
Vol 22 (2) ◽  
pp. 279-285 ◽  
Author(s):  
Sueny K. B Freitas ◽  
Valdinete Lins da Silva ◽  
Alberto N Araújo ◽  
Maria Conceição B. S. M Montenegro ◽  
Boaventura F Reis ◽  
...  
Keyword(s):  
Flow Analysis ◽  
Coupling Reaction ◽  
Pharmaceutical Formulations ◽  
Photometric Determination ◽  
Analysis Method ◽  
Diazo Coupling ◽  
Diazo Coupling Reaction

Synthesis of Azo Polyurethane-Urea and Investigation of its Thermo-Optic Properties

2016 ◽  
Vol 230 (2) ◽  
Author(s):  
Caihong Chen ◽  
Zhening Yang ◽  
Fengxian Qiu ◽  
Tianlin Cao ◽  
Guorong Cao ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Physical And Mechanical Properties ◽  
Isophorone Diisocyanate ◽  
Visible Spectroscopy ◽  
Diazo Coupling ◽  
Uv Visible ◽  
Diazo Coupling Reaction ◽  
The Fourier Transform ◽  
Azo Chromophore ◽  
Azo Polyurethane

AbstractAn azo chromophore molecular S(-)-1,2-bis(4-azophenyl-4-nitro)-ethylenediamine (OABANEDA) was synthesized with 4-nitroaniline and S(-)-1,2-diphenyl ethylenediamine by diazo-coupling reaction. The azo polyurethane-urea (OAAPUU) was obtained from OABANEDA, polyether diol (NJ-210) and isophorone diisocyanate (IPDI). The structure of OAAPUU was characterized by the Fourier transform infrared and UV-visible spectroscopy. The physical and mechanical properties of OAAPUU were investigated. The refractive index (

scholarly journals Diazo coupling reaction for the determination of biliverdin.

1991 ◽  
Vol 40 (8) ◽  
pp. 377-381
Author(s):  
Yuji SUZUKI ◽  
Yoshikatsu SAKAGISHI
Keyword(s):  
Coupling Reaction ◽  
Diazo Coupling ◽  
Diazo Coupling Reaction

Analytic Methods for Bilirubin in Blood Plasma

1961 ◽  
Vol 7 (6) ◽  
pp. 603-625 ◽  
Author(s):  
Derek Watson
Keyword(s):  
Blood Plasma ◽  
Critical Evaluation ◽  
Coupling Reaction ◽  
Spectrophotometric Methods ◽  
Analytic Methods ◽  
Diazo Coupling ◽  
Diazo Coupling Reaction ◽  
In Blood Plasma

Abstract A critical evaluation of existing colorimetric and spectrophotometric methods for the determination of bilirubin in blood plasma is presented. The stoichiometric equivalences of the reagents used in the diazo coupling reaction are re-evaluated. The elimination of turbidity is discussed, as well as methods using diazo-coupling promoters. Recommendations are made concerning the preservation of specimens to prevent oxidation and procedures that give maximal specificity for the type of bilirubin pigment being assayed.

scholarly journals The Diazo-coupling Reaction of Phenol in Organic Solvents. The Isomer Ratio

1974 ◽  
Vol 47 (9) ◽  
pp. 2351-2352 ◽  
Author(s):  
Hideo Yamada ◽  
Y\={o}ji Hashida ◽  
Shizen Sekiguchi ◽  
Kohji Matsui
Keyword(s):  
Organic Solvents ◽  
Coupling Reaction ◽  
Isomer Ratio ◽  
Diazo Coupling ◽  
Diazo Coupling Reaction
Sign in / Sign up

Export Citation Format

Share Document