Interaction between copper chloride and caffeine as seen by diffusion at 25°C and 37°C

Ternary mutual diffusion of isoniazid in aqueous sodium chloride, sodium hydroxide, and hydrochloric acid at T=298.15K

“…Good reproducibility was observed, as seen by the small standard deviations of the mean, S D 1 . The error limits of our results should not be larger than the imprecision, therefore giving an experimental uncertainty of 1% to 3%, as shown in other papers [14][15][16][17][18][19][20][21].…”

“…Moreover, the presence of co-transport of different components and the variations of concentration, viscosity, temperature can be responsible for the variation of solubility of drugs in ''in vivo" studies. A few diffusion coefficients for the binary aqueous systems containing isoniazid [1], sodium chloride [13], sodium hydroxide [13], and hydrochloric acid [13], at T = 298.15 K have been reported, but as far as the authors know, after careful literature search, no data are available in literature for ternary systems involving isoniazid with those components for the same concentrations at T = 298.15 K. Thus, we measured and reported here ternary mutual diffusion coefficients (D 11 , D 22 , D 12 , and D 21 ) for T = 298.15 K at carrier concentrations from (0.000 to 0.050) mol Á dm À3 , using a Taylor dispersion equipment, previously used for other systems [14][15][16][17][18][19][20][21], which will help us to a better understanding of the structure and properties of these important pharmaceutical systems.…”

Transport Properties for Pharmaceutical Controlled-Release Systems: A Brief Review of the Importance of Their Study in Biological Systems

“…Some results have been obtained for systems involving drugs used in the treatment of both Parkinson’s disease and tuberculosis, in different media at therapeutic dosages [2,10,11]. These measurements and others (e.g., some quaternary [12], ternary [13,14,15,16,17], and binary systems [18,19,20,21,22]) were obtained in our laboratory by using the Taylor dispersion method. From these data, it was also possible to estimate some other parameters (e.g., diffusion coefficients at infinitesimal concentrations, dissociation degrees, activation energies, activity coefficients, and effective hydrodynamic radii).…”

Volumetric, Viscometric, and1H NMR Studies on Caffeine, Theophylline, and Theobromine in Aqueous Solutions of MgCl2at TemperaturesT= (288.15 to 318.15) K and at Pressurep= 101.3 kPa

“…Biologically, interactions of CAF with Mg 2+ ions may be understood in terms of inhibitory effect of CAF at adenosine receptors which is decreased by Mg 2+ ions as shown in Scheme . CAF may raise magnesium absorption and urinary magnesium excretion. , Interactions of CAF with electrolytes, metal ions, and nonelectrolytes have been studied in the literature. − …”