Validated RP-HPLC method for the estimation of Amiloride and hydrochlorothiazide in combined tablet dosage form

The aim of this work is to build up a fast, exact, precise and touchy reverse phase liquid chromatographic method for the synchronous assessment of amiloride and hydrochlorothiazide in tablet dose structure. The chromatographic strategy was normalized utilizing Hypersil ODS segment (250×4.6mm, 5μm molecule size) with UV discovery at 210nm and stream pace of 1ml/min. The portable stage includes phosphate buffer (pH acclimated to 2.5 with dilute Ortho Phosphoric acid) and acetonitrile in the proportion of 60:40 v/v. The linearity of proposed technique was examined in the scope of 5-30μg/ml (R²=0.999) for amiloride and 50-300μg/ml (R²=0.999) for Hydrochlorothiazide appropriately. The limit of detection (LOD) was discovered to be 0.10μg/ml and 0.40μg/ml for Amiloride and Hydrochlorothiazide appropriately. The limit of quantitation (LOQ) was discovered to be 0.30μg/ml and 1.20μg/ml for Amiloride and Hydrochlorothiazide separately. The retention times of Amiloride and Hydrochlorothiazide were found to be 3.258min and 2.383min separately. The technique was truly recommended and %RSD was found to be under 2 demonstrating serious level of exactness and accuracy. Subsequently proposed strategy can be effectively evaluated for the synchronous assessment of Amiloride and Hydrochlorothiazide in promoted formulations.