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Simultaneous determination of dapsone and pyrimethamine by derivative spectrophotometry in pharmaceutical formulations
(AOAC INTERNATIONAL, 2003-03)
A simple and fast method was developed for the simultaneous determination of dapsone and pyrimethamine by first-order digital derivative spectrophotometry. Acetonitrile was used as a solvent to extract the drugs from the ...
Effects of some β-carboline alkaloids on intact Trypanosoma cruzi epimastigotes
(1999)
Several β-carboline (9H-pyrido-[3,4-b]-indole) alkaloids were evaluated for in vitro trypanosomicidal activity against Trypanosoma cruzi epimastigotes belonging to two different strains (Tulahuen and LQ) showing different ...
Dissolution kinetics evaluation of controlled-release tablets containing propranolol hydrochloride
(Marcel Dekker Inc., 1999)
In the present research, controlled-release propranolol hydrochloride tablets were prepared for twice-daily administration, allowing more uniform plasmatic levels of the drug. Pharmaceutical formulations were prepared with ...
Absence of hepatitis C infection among illegal drug users in Bucaramanga, Colombia
(2011-01)
The aim of this study was to estimate the prevalence of hepatitis C virus (HCV) and identify risk factors associated with the transmission this virus among drug users. In 2009 we performed a cross-sectional study at
three ...
Simultaneous determination of estradiol and medroxyprogesterone acetate in pharmaceutical formulations by second-derivative spectrophotometry
(AOAC INTERNATIONAL, 2002-07)
This paper reports a simple and fast method for the simultaneous determination of estradiol (ED) and medroxyprogesterone acetate (MP) in pharmaceutical formulations by second-derivative spectrophotometry. Methanol was used ...
Farmacocinética de posaconazol en la profilaxis y tratamiento de la infección fúngica invasora en niños inmunocomprometidos en un hospital pediátrico
(Sociedad Chilena de Infectología, 2018)
Background: There is no consensus on the optimal dosage use of posaconazole (PSC) for invasive fungal infection (IFI) in pediatric patients and normally it is adjusted with drug levels (DLs) >= 0.7 mu g/ml and >= 1.25 mu ...
Voltammetric study of nimesulide and its differential pulse polarographic determination in pharmaceuticals
(Wiley-VCH Verlag, 1997)
Nimesulide, N‐(4‐nitro‐2‐phenoxyphenyl)methanesulfonamide is an antiinflamatory analgesic agent that is both reducible at the mercury electrode and oxidizable at the glassy carbon electrode. Nimesulide in hydroalcoholic ...
Polarographic determination of nitrofurazone and furazolidone in pharmaceutical formulations and urine
(Royal Society of Chemistry, 1987)
In pyridine - formic acid buffer and tetramethylammonium chloride solution over the pH range 0-8.5, nitrofurazone, furazolidone and other nitrofuran derivatives are reduced in a six-electron process, giving rise to a well ...
Depletion study of three formulations of flumequine in edible tissues and drug transfer into chicken feathers
(WILEY-BLACKWELL, 2011-04)
To ensure the delivery of safe animal products to consumers, withdrawal times
(WDT) of drugs must be respected. Drugs administered in therapies can also
reach nonedible tissues (for humans) such as feathers; this transfer ...
Spectral study and simultaneous determination of sulfamethoxazole and trimethoprim by digital derivative spectrophotometry
(SOCIEDAD CHILENA DE QUIMICA, 2002-09)
A direct and simple second derivative digital spectrophometric method has been developed for the simultaneous determination of the sulfamethoxazole and trimethoprim in pharmaceutical formulation. A study of the spectral ...