Results: 151

Estandarización de un método por HPLC para cuantificar diclofenaco en muestras de microdiálisis mediante fotoderivatización precolumna
Standardization of a HPLC method for quantitation of diclofenac in microdialysis samples through precolumn photoderivatization

Rev. cuba. farm; 48 (1), 2014
Introducción: la cuantificación del diclofenaco en muestras de pequeño volumen y baja concentración de analito es compleja y requiere de un método analítico sencillo, altamente sensible y reproducible. Objetivo: estandarizar un método por cromatografía líquida de alta resolución (HPLC) con foto...

Development and validation of a dissolution method using HPLC for diclofenac potassium in oral suspension

Braz. j. pharm. sci; 50 (2), 2014
The present study describes the development and validation of an in vitro dissolution method for evaluation to release diclofenac potassium in oral suspension. The dissolution test was developed and validated according to international guidelines. Parameters like linearity, specificity, precision and acc...

Simultaneous estimation of rosuvastatin and amlodipine in pharmaceutical formulations using stability indicating HPLC method

Braz. j. pharm. sci; 50 (3), 2014
A viable cost-effective and isocratic approach employing C-18 column (250 mm × 4.6 mm, 5 µm) based HPLC has been utilized to separate and estimate the drugs, rosuvastatin, amlodipine and their stress induced degradation products, simultaneously in pharmaceutical formulations. Focused on ICH guideline p...

Quantification and stress degradation studies of cefepime/tazobactam in dry injection form by an RP-HPLC method

Braz. j. pharm. sci; 50 (4), 2014
A simple, specific, precise, accurate, linear, rapid, economic and validated stability indicating an RP-HPLC method for the simultaneous quantification of cefepime and tazobactam in a dry injection dosage form has been developed. Separation was performed on a 5 µm ACE C18 column with phosphate buffer, p...

Optimization and validation of an RP-HPLC method for the estimation of 6-mercaptopurine in bulk and pharmaceutical formulations

Braz. j. pharm. sci; 50 (4), 2014
A reverse phase HPLC method is described for the determination of 6-mercaptopurine in bulk and tablets. Chromatography was carried on a C18 column using a mixture of acetonitrile and 0.05 mol/L sodium acetate buffer (10:90 v/v) as the mobile phase at a flow rate of 1 mL/min-1 with detection at 324 nm. Th...

Determination of amphotericin B in PLA-PEG blend nanoparticles by HPLC-PDA

Braz. j. pharm. sci; 50 (4), 2014
In this work, we developed and validated an effective reversed-phase HPLC method with photodiode array (PDA) detection for the quantitative analysis of amphotericin B (AmB) in poly(lactide)-poly(ethylene glycol) (PLA-PEG) blend nanoparticles. Chromatographic runs were performed on a reverse phase C18 col...

Avaliação do efeito do ácido docosahexaenoico e de seus hidroperóxidos na oligomerização de SOD1 em um modelo da doença esclerose lateral amiotrófica

A Esclerose Lateral Amiotrófica (ELA) é uma doença progressiva e fatal causada pela degeneração seletiva dos neurônios motores do cérebro e medula. Dos casos familiares de ELA (fELA), 20% são causados por mutações pontuais no gene da sod1. O ácido docosahexaenoico (C22:6, n-3, DHA) é um ácid...

Pharmacokinetics of diltiazem hydrochloride delay-onset sustained-release pellet capsules in healthy volunteers

Braz. j. pharm. sci; 49 (1), 2013
The pharmacokinetics (PK) of ordinary tablets and sustained release capsules of diltiazem hydrochloride in human clinical trials had been studied. The PK of diltiazem hydrochloride delay-onset sustained-release pellet capsules, a new dosage form, has not been reported, although it is very important to cl...

Development and validation of a rapid high performance liquid chromatography - photodiode array detection method for estimation of a bioactive compound wedelolactone in extracts of Eclipta alba

Braz. j. pharm. sci; 49 (1), 2013
Following optimization of extraction, separation and analytical conditions, a rapid, sensitive and simple reverse-phase high performance liquid chromatography-photo diode array (HPLC-PDA) method has been developed for the identification and quantification of wedelolactone in different extracts of Eclipta...

Development and validation of an HPLC method for the determination of fluorouracil in polymeric nanoparticles

Braz. j. pharm. sci; 49 (1), 2013
The objective of this work was to develop and validate a rapid high performance liquid chromatography (HPLC) method for the quantitative analysis of fluorouracil (5-FU) in polymeric nanoparticles. Chromatographic analyses were performed on an RP C18 column with a mobile phase consisting of acetonitrile a...