Analytical Method Development &; Validation : Of Lafutidine and Domperidone

We determine Lafutidine and Domperidone simultaneously by simple, rapid, accurate and precise UV-Spectroscopic methods, HPLC, and HPTLC. First Order Derivative method was based on the fact that LAF and DOM showed one zero crossing points 286.60 nm and 273.20 nm respectively. The estimation of both drugs by these two wavelength. Area under Curve Method was done by taking area under the curve in the range of 273 5nm and 287.2 5nm was selected for the analysis for LAF and DOM. The absorptivity values calculated. The calibration curve was plotted regression equation was calculated. HPLC method carried out by using Purospher RP C18 (25 cm 4.6 mm i.d., 5 m) with mobile phase used as a combination of Methanol: Water (with TFA) pH 4.8 = 65:35. The detection was carried out at 280 nm and at flow rate of 1.0 ml/min. HPTLC method was carried out by using Precoated silica gel G60F254 Aluminum sheet, 10 x 10cm and thickness of layer 0.2mm with mobile phase used as a combination of Ethyl Acetate: Ethyl Methyl Ketone: Ammonia (3:7:0.2 v/v/v).The detection was carried out at 280 nm.The proposed methods were successfully applied for the analysis of pharmaceutical formulations.