Results 51 to 60 of about 1,109 (174)

Broad‐Purpose Solutions of N‐Chlorotaurine: A Convenient Synthetic Approach and Comparative Evaluation of Stability and Antimicrobial Activity

open access: yesJournal of Chemistry, Volume 2024, Issue 1, 2024.
Solutions of N‐chlorotaurine (NCT) are effective microbiocidal agents with a broad spectrum of pharmacological activity and outstanding tolerability. The main problem limiting their medical use is their instability, which is generally inherent in solutions of all chlorine‐active compounds.
Bohdan Murashevych   +6 more
wiley   +1 more source

Sensitive and selective methods for the determination of rizatriptan benzoate in pharmaceuticals using N-bromosuccinimide and two dyes

open access: yesJournal of Saudi Chemical Society, 2015
One titrimetric and two spectrophotometric methods are described for the determination of rizatriptan benzoate (RTB) in bulk drugs and in tablets. The methods use N-bromosuccinimide (NBS) as an analytical reagent, janus green (JG) and calmagite (CMG) as ...
Kudige Nagaraj Prashanth   +1 more
doaj   +1 more source

Titrimetric and Spectrophotometric Determination of Metaprolol tartrate in Pharmaceuticals Using N-Bromosuccinimide

open access: yesE-Journal of Chemistry, 2007
One titrimetric and two spectrophotometric methods are presented for the assay of metaprolol tartrate (MPT) in bulk drug and in tablets. The methods employ N-bromosuccinimide (NBS) as the oxidimetric reagent and two dyes, methyl orange and indigo carmine
K. Basavaiah, B. C. Somashekar
doaj   +1 more source

INFLUENCE OF THE COBALT NITRATE:ETHYLENE GLYCOL MOLAR RATIO ON THE FORMATION OF CARBOXYLATE PRECURSORS AND COBALT OXIDES

open access: yesStudia Universitatis Babes-Bolyai Chemia, 2017
This paper focuses on the obtaining of carboxylate precursors through the redox reaction of cobalt nitrate and ethylene glycol, in different stoechiometric ratios, as well as the decomposition of precursors into cobalt oxides.
Thomas DIPPONG   +2 more
doaj   +1 more source

Ultrasound assisted miniemulsion polymerization to prepare poly(urea-urethane) nanoparticles

open access: yesPolímeros, 2018
Recently, the physical and chemical effects of ultrasound in polymeric materials synthesis have attracted great attention. This work presents the synthesis of novel polymeric materials by polymerization of isophorone diisocyanate with different polyols ...
André Eliezer Polloni   +4 more
doaj   +1 more source

An Interference-Free Voltammetric Method for the Detection of Sulfur Dioxide in Wine Based on a Boron-Doped Diamond Electrode and Reaction Electrochemistry. [PDF]

open access: yesInt J Mol Sci, 2023
Culková E   +5 more
europepmc   +1 more source

Exchangeable aluminum evaluation in acid soils

open access: yesScientia Agricola, 2003
One of the main factors limiting agricultural production in tropical climate regions is mainly related to the presence of exchangeable aluminum (Al3+) in highly weathered acid soils.
Cassio Hamilton Abreu Jr.   +2 more
doaj  

Interaction Studies of Sodium N-Dodecyl Sulphate and Protons to Nistone H1 [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 1989
The relationship between the binding of sodium n-dodecyl sulphate and protons to histone H1 has been investigated by equilibrium dialysis and titrimetry. The data cover the pH range 3.2-10 and surfactant concentrations up to 3.0×10-3 mol dm-3.
A.A. Moosavi Movahedi, M Godarzi
doaj  

Homo- and Heteroligand Nickel(II) Complexes with Benzoic and para-Methoxybenzoic Acid Hydrazides and L-Histidine [PDF]

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2017
Complex formation of nickel(II) with benzoic, para-methoxybenzoic acid hydrazides, and L-histidine have been studied by the methods of pH-metric titrimetry, spectrophotometry, and mathematical modelling in aqueous solutions with 1.0 mol dm–3 KNO3 as ...
N.V. Troshanin   +4 more
doaj  

Simple and Rapid Methods for the Analysis of Captopril in Dosage Forms

open access: yesE-Journal of Chemistry, 2007
Two indirect methods are described for the micro determination of captopril using hexacyanoferrate (III) as reagent. The reaction used for titrimetry proceeds at room temperature and will be complete in 10 minute with a stoichiometry of 1:1 with respect ...
H. Chandru, A. C. Sharada
doaj   +1 more source

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