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First-order UV-derivative spectrophotometry in the analysis of omeprazole and pantoprazole sodium salt and corresponding impurities
(Pergamon-Elsevier Science Ltd, Oxford, 2003)
The first-order UV-derivative spectrophotometry, applying zero-crossing method was developed for the determination of omeprazole (OM), omeprazole sulphone (OMS), pantoprazole sodium salt (PANa), and N-methylpantoprazole ...
Determination of bifonazole in creams containing methyl- and propyl p-hydroxybenzoate by derivative spectrophotometric method
(Pergamon-Elsevier Science Ltd, Oxford, 2003)
A second order derivative spectrophotometric method for the determination of bifonazole in the presence of methyland propyl p-hydroxybenzoate as preservatives has been developed. The determination was performed in a 0.1 M ...
Determination of all pK(a) values of some di- and tri-carboxylic unsaturated and epoxy acids and their polylinear correlation with the carboxylic group atomic charges
(Scientific Reviews Ltd., 2003)
For a series of seven unsaturated and seven epoxy di- and tricarboxylic acids, pK(a)(a) values were determined potentiometrically in aqueous media at 25 degreesC and an ionic strength of 0.1 M (NaCl). The thermodynamic ...
Polymer-stabilized emulsion systems: Structural characteristics and physical stability evaluation
(Taylor & Francis Ltd, Abingdon, 2003)
In the course of investigation of the effects of polymeric emulsifier (Simulgel(R)A) on the structural characteristics and physical stability (during storage time) of semisolid o/w emulsion systems with different emulsifier ...
Study on protolytic equilibria of lorazepam and oxazepam by UV and NMR spectroscopy
(Pergamon-Elsevier Science Ltd, Oxford, 2003)
Protolytic equilibria in homogeneous and heterogeneous systems of lorazepam and oxazepam, which are sparingly soluble ampholytes from the class of 1,4-benzodiazepines, were studied at 25 degreesC and ionic strength of 0.1 ...
Quantitative analysis of nimesulide in plasma by thin-layer chromatography: Application to pharmacokinetic studies in man
(Research Inst Medicinal Plants, Budakalasz, 2003)
A thin-layer chromatographic (TLC) method for quantitative analysis of nimesulide in human plasma has been developed, validated, and applied to a pharmacokinetic study of healthy volunteers. A previously published method ...
Determination of dissociation constants of quercetin
(Govi-Verlag Gmbh, Eschborn, 2003)
Chiral ligand-exchange chromatography for diastereo-enantio separation of exametazime
(Pergamon-Elsevier Science Ltd, Oxford, 2003)
The diastereo-enantio separation of isomeric mixtures of exametazime (HM-PAO) by liquid chromatography is described using an achiral sorbent (RP-18). A chiral eluent with the initial complex of Cu(II) and the optically ...
Preliminary assay on the antioxidative activity of Laurus nobilis extracts
(Elsevier Science BV, Amsterdam, 2003)
Antioxidative activity of Laurus nobilis leaves, bark and fruit methanolic extracts (crude and defatted) were studied on the level of lipid peroxidation in liposomes, induced by Fe2+/ ascorbate system and measured ...
Antioxidant status of patients with acute myocardial infarction
(Dustri-Verlag Dr Karl Feistle, Oberhaching, 2003)
Objectives: It has been suggested that dietary selenium (Se) deficiency is implicated in the etiology of cardiovascular disease. In this study, we examined the antioxidant status of patients with acute myocardial infarction ...