Selective Determination of Itraconazole in the Presence of Its Oxidative Degradation Product by A New Spectrophotometric Method

摘要

A simple,specific,accurate and precise spectrophotometric stability indicating method is developed for determination of itraconazole in the presence of its oxidative degradation product and in pharmaceutical for-mulations.A newly developed spectrophotometric method called ratio difference method by measuring the difference in amplitudes between 230 and 265 nm of ratio spectra.The calibration curve is linear over the con-centration range of 5~25μg·mL-1 with mean percentage recovery of 99. 81±1. 002.Selective quantification of itraconazole,singly in bulk form,pharmaceutical formulations and in the presence of its oxidative degrada-tion product is demonstrated.The results have been statistically compared with a pharmacopeial method.