A novel stability indicating liquid chromatographic method for dissolution analysis of Bexarotene capsules, 75 mg has been developed and validated. Efficient chromatographic separation was achieved on a C18 column (50 mm × 2.1 mm, 1.7-μm particles) with a simple isocratic mobile-phase at a flow rate of 1.0 mL min−1. Quantification was achieved by use of ultraviolet detection at 260 nm. After th...

Mesoporous zirconium pyrophosphate(ZPP) adsorbents were synthesized, with six quaternary ammonium salts (Quats), namely, Octyltrimethylammonium (OTMA, C8), Decyltrimethylammonium (DCTMA, C10), Dodecyltrimethylammonium (DDTMA, C12), Tetradecyltrimethylammonium (TDTMA, C14), Hexadecyltrimethylammoium (HDTMA, C16), and Octadecyltrimethylammonium (ODTMA, C18), as template for studying fluoride adso...

The surface of coconut coir pith, a lignocellulosic polymer was modified with a cationic surfactant, hexadecyltrimethylammonium bromide and used as an adsorbent for the removal of sulfate from aqueous solutions. Optimum pH for maximum removal of sulfate was found to be 2.0. Adsorption has been found to be concentration dependent and follows pseudo second order kinetics. Langmuir, Freundlich and...

The synthesis of pharmaceutically and biologically active 2-amino-4H-chromenes was described using TiO2/nanoclinoptilolite (TiO2/NCP) as an efficient nanocatalyst under solvent-free condition. The TiO2/NCP was fabricated through modification of NCP with HDTMA, then the surface modified NCP was impregnated with titanium tetrachloride solution. Finally, the materi...

La presencia de contaminantes emergentes, como los antibióticos, representa una gran preocupación debido a efectos que causa en ecosistemas y la salud humanos. El mayor impacto este tipo es resistencia bacteriana medios naturales, principalmente el agua, aunque existen métodos para removerlos, las trazas antibióticos no pueden ser retiradas completamente por plantas tratadoras aguas residuales ...