Abstract
A simple, rapid validated stability indicating HPTLC method for estimation of Salmeterol xinafoate was successfully developed. This method is based on HPTLC separation followed by UV detection at 252 nm. The separation was carried out on Merck TLC aluminium sheets precoated with silica gel 60F254 using Chloroform: Methanol: Ammonia (7:3:0.5 v/v/v) as a mobile phase and scanning was done by using TLC Scanner III. Salmeterol xinafoate gave well defined and sharp peak at Rf 0.52 ± 0.05 at 252 nm. Calibration curve was linear in range 1000-3000 ng/band for Salmeterol xinafoate. Stress degradation study includes hydrolysis under different pH, oxidation, thermal and photolytic conditions. The suitability of this HPTLC method for quantitative estimation of Salmeterol xinafoate was proved by validation in accordance with requirements of ICH guidelines Q2A (R1).
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