RESUMO
A rapid and precise RP-HPLC method for determination of Olmesartan medoxomil and Hydrochlorothiazide in bulk and pharmaceutical dosage forms. Olmesartan medoxomil & Hydrochlorothiazide are found to be degraded together under different set of conditions as followed according to ICH guidelines and the degradants so formed along with olmesartan & hydrochlorothiazide are separated by using INERTSIL ODS C18 3V (150 x 4.6, 5μ) using mobile phase 1ml triethanolamine in one litre water and the pH was adjusted to 2.5 with orthophosphoric acid and acetonitrile using a gradient program with a flow rate of 1ml/min, throughout the gradient program with a detection wavelength of 225nm for both the compounds with a injection volume of 10μl. The method was validated for selectivity, linearity, accuracy, robustness, precision and specificity. The results were indicating the method was selective in analysis of both olmesartan medoxomil and hydrochlorothiazide in the presence of degradation products formed under various stress conditions.
RESUMO
A simple RP-HPLC method for the determination of Rasagiline Mesylate in bulk and tablet dosage form was devel-oped. Numerous HPLC conditions were tested for determination of rasagiline. The best result was achieved by using Purosphere star RP-18, (150×4.6mm), 5μm column and a mobile phase consisting of Potassium Orthophosphate: Acetonitrile (60:40 v/v) adjusted to pH 7.0(±0.05) with Ammonia solution, a flow rate of 1.5 ml/min with ultraviolet detection at 210nm. The correlation coefficients for calibration curves within the detection range of 5-30μg/ml were 0.9993. The within and between-day precision was determined for both retention time and peak area. The retention time of rasagiline is 6.0 minutes.
RESUMO
A rapid and precise RP-HPLC method for determination of Olmesartan medoxomil and Hydrochlorothiazide in bulk and pharmaceutical dosage forms. Olmesartan medoxomil & Hydrochlorothiazide are found to be degraded together under different set of conditions as followed according to ICH guidelines and the degradants so formed along with olmesartan & hydrochlorothiazide are separated by using INERTSIL ODS C18 3V (150 x 4.6, 5μ) using mobile phase 1ml triethanolamine in one litre water and the pH was adjusted to 2.5 with orthophosphoric acid and acetonitrile using a gradient program with a flow rate of 1ml/min, throughout the gradient program with a detection wavelength of 225nm for both the compounds with a injection volume of 10μl. The method was validated for selectivity, linearity, accuracy, robustness, precision and specificity. The results were indicating the method was selective in analysis of both olmesartan medoxomil and hydrochlorothiazide in the presence of degradation products formed under various stress conditions.
RESUMO
A simple RP-HPLC method for the determination of Rasagiline Mesylate in bulk and tablet dosage form was devel-oped. Numerous HPLC conditions were tested for determination of rasagiline. The best result was achieved by using Purosphere star RP-18, (150×4.6mm), 5μm column and a mobile phase consisting of Potassium Orthophosphate: Acetonitrile (60:40 v/v) adjusted to pH 7.0(±0.05) with Ammonia solution, a flow rate of 1.5 ml/min with ultraviolet detection at 210nm. The correlation coefficients for calibration curves within the detection range of 5-30μg/ml were 0.9993. The within and between-day precision was determined for both retention time and peak area. The retention time of rasagiline is 6.0 minutes.