Results 1 to 10 of about 523,220 (184)

Determination of the microscopic acid dissociation constant of piperacillin and identification of dissociated molecular forms [PDF]

open access: yesFrontiers in Chemistry, 2023
For amphoteric ß-lactam antibiotics, the acid dissociation constant (pKa) is a fundamental parameter to characterize physicochemical and biochemical properties of antibiotics and to predict persistence and removal of drugs.
Guoao Li   +5 more
doaj   +2 more sources

Simple methods to determine the dissociation constant, Kd [PDF]

open access: yesMolecules and Cells
: The determination of the dissociation constant (Kd) is pivotal in biochemistry and pharmacology for understanding binding affinities in chemical reactions, which is crucial for drug development and comprehending biological systems. Here, we introduce a
Donghun Lee, Juwon Kim, Gwangrog Lee
doaj   +2 more sources

Calculation of Crystal-Solution Dissociation Constants [PDF]

open access: yesBiomolecules, 2022
The calculation of dissociation constants is an important problem in molecular biophysics. For such a calculation, it is important to correctly calculate both terms of the binding free energy; that is, the enthalpy and entropy of binding.
Sergiy O. Garbuzynskiy   +1 more
doaj   +3 more sources

SYNTHESIS AND IDENTIFICATION OF SOME HYDROXAMIC DERIVATIVES AND STUDYING THEIR THERMO AND PHOTO DEGRADATION [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2014
The aim of this research is to prepare and study the kinetics effect of temperature and photochemical reactions of the hydroxamic acid derivatives of diethyl succinate through the interaction of alkyl halides and diethyl succinate in the presence of ...
ISMAIL AL-KHATEEB   +2 more
doaj   +1 more source

The Kinetics of Chitosan Degradation in Organic Acid Solutions

open access: yesMarine Drugs, 2021
This paper presents a comparative study on chitosan degradation in organic acid solutions according to their different dissociation characteristics. More precisely, the aim of the study was to determine the kinetics of the degradation process depending ...
Dominik Sikorski   +2 more
doaj   +1 more source

Determination of the Dissociation Constants of 16 Active Ingredients in Medicinal Herbs Using a Liquid–Liquid Equilibrium Method

open access: yesSeparations, 2021
The dissociation constant is an important physicochemical property of drug molecules that affects the pharmacokinetic and pharmacodynamic properties of drugs.
Wanying Wang   +5 more
doaj   +1 more source

Determination of pKa values of fluphenazine analogs by reversed-phase high-performance liquid chromatography [PDF]

open access: yesActa Poloniae Pharmaceutica, 2023
Phenothiazine and its derivatives exhibit many properties. Hence they are the starting structures for many new potential drugs, biologically active compounds, dyes, etc.
Sobczak Agnieszka   +3 more
doaj   +1 more source

Favipiravir Determination in Pharmaceutical Formulation via HPLC Chromatographic Approach [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2023
Favipiravir is a broad-spectrum antiviral drug and it has increasing interest regarding its potential use in Covid-19 therapy.  In the present work, a simple, fast, precise Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) technique was ...
Sabriye Aydinoglu, Metin Bozyel
doaj   +1 more source

Engineering Novel Aptameric Fluorescent Biosensors for Analysis of the Neurotoxic Environmental Contaminant Insecticide Diazinon from Real Vegetable and Fruit Samples

open access: yesFrontiers in Bioscience-Landmark, 2022
Background: Diazinon is a widely used organophosphorus neurotoxic insecticide. It is a common environmental contaminant and a hazardous agri-waste. Its detection is critical to control entry into food systems and protect the environment. Methods: In this
Mai-Huong Thi Can   +11 more
doaj   +1 more source

Phosphorylated and Phosphomimicking Variants May Differ—A Case Study of 14-3-3 Protein

open access: yesFrontiers in Chemistry, 2022
Protein phosphorylation is a critical mechanism that biology uses to govern cellular processes. To study the impact of phosphorylation on protein properties, a fully and specifically phosphorylated sample is required although not always achievable ...
Aneta Kozeleková   +10 more
doaj   +1 more source

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