UV-Spectrophotometric Assay Method Development and Validation of Metronidazole in Bulk and Tablet Formulation

An easy, precise and accurate spectroscopic technique for the estimation of Metronidazole in pure form and tablet dosage form has been developed. The proposed method involves dissolving Metronidazole in 1(M) HCl solution and subjecting the resulting solution to UV Spectroscopic assessment. Absorption maximum was found to lie at about 277nm. Beer's law was obeyed in the concentration range of 2-10 2 µg/ml. Calibration curve showed linearity between absorbance and concentration as per line equation y=0.0347x-0.0071 with an R value of 0.9974. Validation was performed as ICH guidelines for linearity, accuracy and precision. The assay results were found to be in good agreement with label claim.