Development and validation of RP-HPLC method for the estimation of omeprazole in bulk and capsule dosage forms

Abstract

A method for the determination of omeprazole in bulk and capsule dosage form by reverse phase high performance liquid chromatography has been developed. This is a simple, rapid, precise and an accurate method. The method was developed on a Novapak C18, (250 x 4.6 mm, 5µ) column using phosphate buffer (pH 7.4) and acetonitrile in the ratio of 60:40, v/v as a mobile phase which was pumped at a flow rate of 1.0 ml/min and detection was done at 302 nm. The retention time of the drug was found to be 7.71 min. The method was validated for accuracy, precision, linearity, specificity, robustness. The linearity was observed in the range of 20-60 ppm. The results of recovery studies indicated that the method was accurate. Hence the developed method was found to be suitable for the estimation of omeprazole in bulk and capsule dosage forms.DOI: http://dx.doi.org/10.3329/icpj.v1i11.12062 International Current Pharmaceutical Journal 2012, 1(11): 366-369