VALIDATED NOVEL SPECTROSCOPIC METHOD FOR ESTIMATION OF TRIAMCINOLONE ACETONIDE IN NASAL SPRAY

Abstract

A simple, sensitive, accurate, precise and cost-effective pH independent spectrophotometric method has been developed for the estimation of triamcinolone acetonide in nasal sprays. Estimation was carried out at the isosbestic point of drug solutions, Isosbestic point was measured by scanning equimolar solution of triamcinolone acetonide separately in phosphate buffer pH 3.0, phosphate buffer pH 7.0 and phosphate buffer pH 10.0 at a concentration of 10 µg mL-1. They were scanned in the wavelength range of 200-400 nm. The isosbestic point was found to be 230.0 nm in acidic, basic and neutral condition; hence pH independent wavelength 230 nm was used for estimation of triamcinolone acetonide. The method observed linear response in the concentration range of 3-18 µg mL-1 at 230 nm. Developed method has been validated in accordance with ICH guideline Q2 R1 for several parameters like linearity, precision, accuracy, limit of detection and limit of quantification. The developed and validated analytical method was successfully applied to the estimation of triamcinolone acetonide in marketed nasal spray formulations.