title: Extractive spectrophotometric determinations of some phenothiazine derivatives in pharmaceutical preparations.
abstract: Two sensitive methods for the determination of phenothiazine derivatives based on the formation of coloured salts of these drugs formed with Brilliant Blue or Orange-II in the presence of 0.1 M HCl are described. The ion pair salts formed are quantitatively extracted into chloroform and the dried chloroform solutions analyzed using spectrophotometry.
authors.affiliation: Dept. of Pharmaceutical Sciences, Nagpur University, University Campus, Nagpur 440 010, India.
authors.forename: S L
authors.initials: SL
authors.lastname: Bhongade
authors.forename: A V
authors.initials: AV
authors.lastname: Kasture