UV Spectrophotometric Methods For The Determination Of Celecoxib And Tizanidine Hydrochloride

Two UV spectrophotometric methods have been developed for the determination of celecoxib and tizanidine hydrochloride in pure and in its pharmaceutical formulations. Celecoxib having absorption maximum at 251.2 nm in 0.1 N sodium hydroxide, where as tizanidine HCI exhibiting maximum absorption at 228 nm in distilled water.