Abstract
A simple, precise and reversed phase liquid chromatographic method was developed and it is validated for estimation of losartan in bulk drug. Losartan is use for treatment of hypertension. The separation was achieved on Acquity BEH C18 1.7µ, (2.1 X 100) mm, analytical column with mobile phase consisted of buffer (adjust pH 3.0 of water with dilute formic acid) : Acetonitrile (50:50 v/v) at isocratic flow of 0.3ml/min with UV detection wavelength was at 230 nm. The method was successfully validated in accordance to ICH guidelines for accuracy, precision, specificity, linearity. The linear regression analysis data for calibration plots showed good linear relationship in the concentration range 25-75μg/mL for losartan. The % Recovery/Accuracy was within the range between 98% and 102%. The percentage RSD for precision method was found to be less than 2%. The method was successfully applied for routine analysis of losartan in bulk samples.
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