the present study deals with the formulation and evaluation of chitosan nanoparticles containing donepezil hydrochloride for the targeted delivery to the brain. nanoparticles were prepared by ionic gelation method using sodium tripolyphos-phate (tpp) as a cross linking agent followed by sonication. nanoparticles were obtained in the average size ranging from 116.8 to 227.5 nm. particle morpholo...

The present work describes a reverse phase HPLC method for the quantitation of drotaverine hydrochloride and mefenamic acid in human plasma. Organic solvent system used for liquid extraction composed of dichloromethane, and isopropyl alcohol in the ratio 80:20 (v/v). The compounds were separated on a Thermo BDS Hypersil C8 (25.0 cm×4.6 mm, 5 µm particle size) column in isocratic mode with a mix...

The present work describes a reverse phase HPLC method for the quantitation of drotaverine hydrochloride and mefenamic acid in human plasma. Organic solvent system used for liquid extraction composed of dichloromethane, and isopropyl alcohol in the ratio 80:20 (v/v). The compounds were separated on a Thermo BDS Hypersil C8 (25.0 cm×4.6 mm, 5 µm particle size) column in isocratic mode with a mix...

Incubation of washed bacterial and ribosomal suspensions with optochin or quinine hydrochloride caused an increase in the turbidity of the suspensions and the appearance of electron-dense cytoplasmic aggregates in the treated cells. These effects were more pronounced with optochin hydrochloride than with quinine hydrochloride, and they did not correlate with the relative sensitivities of differ...

Nalmefene hydrochloride injection is not stable, and the formation of dimers may occur quickly, limiting the use of nalmefene hydrochloride in the clinic. Therefore, in this study, we aimed to optimize the preparation of nalmefene hydrochloride injection in order to increase the stability of the drug.

Three simple, rapid, precise and accurate spectrophotometric methods have been developed for simultaneous analysis of Tolperisone Hydrochloride (TOL) and Diclofenac Sodium (DIC) in their combined dosage form. Method A, Simultaneous equation method (Vierodt’s method) applies measurement of absorptivities at two wavelengths, 261.00 nm (λmax of Tolperisone Hydrochloride) and 279.00 nm, (λmax of Di...

Sundarijal River supply drinking water in Kathmandu city, Nepal and to study the nitrate concentration, 10 different sample from locations of was taken. The method for removal presence tested using hydroxylamine hydrochloride dose at 25±2 0C with 35 minutes contact time. Samples reduction increase increasing dosages, up certain limit. That mean 0.5g, 0.6g 0.8g dosages hydrochloride, not observe...