title: Extractive-spectrophotometric determination of some 2- and 10-disubstituted phenothiazines with dipicrylamine.
abstract: Dipicrylamine reacts in neutral medium with some 2,10-disubstituted phenothiazines (promazine, chlorpromazine and promethazine hydrochlorides, trifluoperazine dihydrochloride, thioproperazine dimethanosulphonate) forming orange or brown ion-association compounds. The compounds are insoluble in water but quantitatively extracted into chloroform. These properties have been exploited for the determination of phenothiazines in pure solutions and pharmaceuticals.
authors.affiliation: Department of Chemistry, Białystok Technical University, Poland.
authors.forename: E
authors.initials: E
authors.lastname: Regulska
authors.forename: H
authors.initials: H
authors.lastname: Puzanowska-Tarasiewicz
mesh_terms: D002138:Calibration; D007202:Indicators and Reagents; D019999:Pharmaceutical Solutions; D010640:Phenothiazines / Q000032:analysis*; D010851:Picrates / Q000737:chemistry*; D013607:Tablets
chemical_list: D007202:Indicators and Reagents; D019999:Pharmaceutical Solutions; D010640:Phenothiazines; D010851:Picrates; D013607:Tablets; C011454:dipicrylamine