UV Spectrophotometric Stability Indicating Method Development and Validation for the Determination of Finasteride in Bulk and Dosage Form

A UV spectrophotometric method was developed and validated for determining finasteride content in bulk and dosage forms using methanol as a diluent. The method, with a λmax of 255 nm, showed linearity in the 2-12 μg/mL range, a correlation coefficient of 0.999, and a mean recovery of 98-99%. The limits of quantification and detection were 1.178 μg/mL and 5.40 μg/mL, respectively. Validation followed ICH guidelines, confirming the method's suitability for routine finasteride analysis in both bulk and commercial formulations.