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Simultaneous HPLC determination of nitrendipine and impurities of the process of synthesis
(Pergamon-Elsevier Science Ltd, Oxford, 2001)
A method has been developed for separation of nitrendipine and its impurities of reaction partners and side reaction products by high-performance liquid chromatographic method on a RP-ls column and detection at 238 nm. The ...
Essential oil from the leaves of Eucalyptus camaldulensis Dehn., Myrtaceae from Jerusalem
(Allured Publ Corp, Carol Stream, 2001)
The leaves of Eucalyptus camaldulensis Dehn., Myrtaceae, collected in Jerusalem, contained 0.5% of essential oil. Using GC and GC/MS, 41 components were identified. The major constituents were p-cymene (24.2%) and spathulenol ...
Modulation of human peripheral blood mononuclear cell activation by the combination of leflunomide and pentoxifylline
(Elsevier Science Inc, New York, 2001)
Chemical composition of the essential oil of the species Artemisia eriantha Ten. (Asteraceae) from Yugoslavia
(Taylor & Francis Inc, Philadelphia, 2001)
The essential oil of Artemisia eriantha Ten. (Asteraceae) from two localities on the mountain Durmitor in Montenegro (Yugoslavia) was studied using GC/MS. The oil yield was 0.7% and the major constituents were identified ...
Variability of essential oils of Satureja montana L. and Satureja kitaibelii Wierzb. ex Heuff. from the central part of the Balkan peninsula
(Pergamon-Elsevier Science Ltd, Oxford, 2001)
The results of the essential oil composition confirm that there are differences between populations within the same subspecies (Satureja montana ssp. montana), between the subspecies (Satureja montana ssp. montana and ...
In vivo modulation of the distribution of thymocyte subsets by female sex steroid hormones
(Elsevier Science BV, Amsterdam, 2001)
This study examined the effects of the principal ovarian steroids, 17 beta -estradiol (E) and progesterone (P), on the thymic structure and on the intrathymic development of T-cells. Adult female rats were ovariectomized ...
Influence of pH and agitation intensity on drug dissolution from tablets evaluated by means of factorial design
(ECV-Editio Cantor Verlag Medizin Naturwissenschaften, Aulendorf, 2001)
Dissolution rate of a drug substance can be strongly influenced by the experimental conditions employed, among which agitation intensity and pH value were recognized as the most Important. A complete two-factor, three-level ...
Derivative spectrophotometric method for determination of acidity constants of single step acid-base equilibria
(Elsevier Science BV, Amsterdam, 2001)
A general derivative spectrophotometric method for determination of acidity constants is developed. The method appears suitable in cases when classical spectrophotometry cannot be employed due to little differences in the ...
Synthesis of new stereoisomeric nitrate esters derived from isosorbide-mononitrates
(Freund Publishing House Ltd, London, 2001)
A synthesis of diastereomeric (7R) 7-endo-nitrooxy-3-oxo-2,5,9-trioxabicyclo[4.3.0]nonane (4b) and (7S) 7-exo-nitrooxy-3-oxo-2,5,9-trioxabicyclo[4.3.0] (7b) is described using D-glucitol as a starting compound. Bicyclic ...
Quantitative analysis of analgoantipyretics in dosage form using planar chromatography
(Pergamon-Elsevier Science Ltd, Oxford, 2001)
In the therapy of pain of weaker genesis, frequently used drugs usually represent a mix of analgoantipyretics of different chemical structures, mostly derivatives of salicylic acid, pyrazolone and p-aminophenol as well as ...