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UV spectrophotometric microdetermination of L-DOPA based on complex formation with copper(II)ion
(Marcel Dekker Inc, New York, 1997)
The UV spectrophotometric investigations obtained for the reaction between L-DOPA and copper(II)ion contribute to the clarification of equilibrium conditions of the complex formation both in the excess of metal ion and ...
High-performance liquid chromatographic assay of 8-hydroxyquinoline sulfate and its stability in immunobiological preparations
(Elsevier Science BV, Amsterdam, 1998)
Because of the ability of g-hydroxyquinoline sulfate (8-HQS) to irreversibly bind metals from rubber stoppers, the stability of 8-HQS in tuberculin solutions was investigated, For the determination of 8-HQS, a simple and ...
Spectrophotometric investigation of the Pd(II)-quercetin complex in 50% ethanol
(Springer-Verlag Wien, Vienna, 1998)
Composition and stability constant of the Pd(II)-quercetin complex were determined by suitable spectrophotometric methods and pH-metric measurements in 50% Ethanol. It was found that the pd(2+) ion and quercetin form a 1:1 ...
Densitometric determination of metoprolol tartrate in pharmaceutical dosage forms
(Pergamon-Elsevier Science Ltd, Oxford, 1997)
This paper describes a simple densitometric method for the determination of metroprolol tartrate in tablets and ampoules. After separation on silica gel GF254 plates, using acetone-methanol-triethylamine as the mobile phase ...
Spectrophotometric determination of fluorometholone in pharmaceuticals using 1,4-dihydrazinophthalazine
(Marcel Dekker Inc, New York, 1996)
A sensitive and simple spectrophotometric method for the determination of fluorometholone in pharmaceutical formulations using 1,4-dihydrazinophthalazine (1,4-DHPHT; dihydralazine) as the reagent is presented. The yellow ...
A taraxasterol derivative and phenolic compounds from Hieracium gymnocephalum
(Elsevier Ltd, 1999)
From the aerial parts of Hieracium gymnocephalum the new triterpene, 21α-hydroxy-taraxasterol and flavone diglycosides luteolin 7-O-α-L- rhamnosyl(1 → 6)-β-D-glucoside and luteolin 7-O-β-D-xylosyl(1 → 6)-β-D- glucoside ...
Aromatic Plants of Yugoslavia. I. Chemical Composition of Oils of Achillea millefolium L. ssp. pannonica (Scheele) Hayak, A. crithmifolia W. et K., A. serbica Nym. and A. tanacetifolia All.
(Allured Publishing Corp., 1999)
We used GC/MS to determine the chemical composition of the essential oils of
wild Achillea plants native to Yugoslavia: Achillea millefolium L. ssp. pannonica
(Scheele) Hayak, A. crithmifolta W. et K., A. serbica Nym. ...
Triterpenoids from Hieracium plumulosum A. Kerner, L., Asteraceae
(Pharmazie, 1996)
Comparative pharmacokinetics and bioavailability of two cotrimoxazole preparations
(Govi-Verlag Gmbh, Eschborn, 1998)
The objective of this study was to assess both pharmacokinetic properties and bioavailability of a newly developed cotrimoxazole preparation (Bioprim(R) tablets, 80 mg of trimethoprim/400 mg sulfamethoxazole), in comparison ...
Flavonoid and phenolic acid patterns in seven Hieracium species
(Biochemical Systematics and Ecology, 1999)
We propose a new model for landslide dynamics under the assumption of a delay failure mechanism. Delay failure is simulated as a delayed interaction between adjacent blocks, which mimics the relationship between the ...