alexa Abstract | Rapid Spectrophotometric Determination Of Some Phenothiazine Drugs With 1, 2-Naphthaquinone-4-Sulphonic Acid

Indian Journal of Pharmaceutical Sciences
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A sensitive method is described for the rapid spectrophotometric determination of some phenothiazine drugs based on the formation of coloured oxidation species with 1,2-naphthaquinone-4-sulphonic acid (NQSA) in hydrochloric acid medium. Usual exciepients do not interfere with this method when applied to pharmaceutical preparations.

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Author(s): P Nagaraja J Seetharamappa

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