Spectrophotometric determination of trace amounts of quaternary ammonium salts in drugs by ion-pair extraction with bromophenol blue and quinine. 1983

T Sakai

UI MeSH Term Description Entries
D010636 Phenols Benzene derivatives that include one or more hydroxyl groups attached to the ring structure.
D011803 Quinine An alkaloid derived from the bark of the cinchona tree. It is used as an antimalarial drug, and is the active ingredient in extracts of the cinchona that have been used for that purpose since before 1633. Quinine is also a mild antipyretic and analgesic and has been used in common cold preparations for that purpose. It was used commonly and as a bitter and flavoring agent, and is still useful for the treatment of babesiosis. Quinine is also useful in some muscular disorders, especially nocturnal leg cramps and myotonia congenita, because of its direct effects on muscle membrane and sodium channels. The mechanisms of its antimalarial effects are not well understood. Biquinate,Legatrim,Myoquin,Quinamm,Quinbisan,Quinbisul,Quindan,Quinimax,Quinine Bisulfate,Quinine Hydrochloride,Quinine Lafran,Quinine Sulfate,Quinine Sulphate,Quinine-Odan,Quinoctal,Quinson,Quinsul,Strema,Surquina,Bisulfate, Quinine,Hydrochloride, Quinine,Sulfate, Quinine,Sulphate, Quinine
D001978 Bromphenol Blue A dye that has been used as an industrial dye, a laboratory indicator, and a biological stain. Bromophenol Blue,Tetrabromophenol Blue,Blue, Bromophenol,Blue, Bromphenol,Blue, Tetrabromophenol
D004338 Drug Combinations Single preparations containing two or more active agents, for the purpose of their concurrent administration as a fixed dose mixture. Drug Combination,Combination, Drug,Combinations, Drug
D000644 Quaternary Ammonium Compounds Derivatives of ammonium compounds, NH4+ Y-, in which all four of the hydrogens bonded to nitrogen have been replaced with hydrocarbyl groups. These are distinguished from IMINES which are RN Quaternary Ammonium Compound,Ammonium Compound, Quaternary,Ammonium Compounds, Quaternary,Compound, Quaternary Ammonium
D001558 Benzethonium Bactericidal cationic quaternary ammonium surfactant used as a topical anti-infective agent. It is an ingredient in medicaments, deodorants, mouthwashes, etc., and is used to disinfect apparatus, etc., in the food processing and pharmaceutical industries, in surgery, and also as a preservative. The compound is toxic orally as a result of neuromuscular blockade. Bencetonium Chloride,Benzethonium Chloride,Formula Magic,Hyamine 1622,Orchid Fresh II,Phemeride,Phemerol,Phemethryn,Puri-Clens,Quatrachlor,Solamin,Chloride, Bencetonium,Chloride, Benzethonium,Magic, Formula,Puri Clens,PuriClens
D001599 Berberine An alkaloid from Hydrastis canadensis L., Berberidaceae. It is also found in many other plants. It is relatively toxic parenterally, but has been used orally for various parasitic and fungal infections and as antidiarrheal. Umbellatine
D001600 Berberine Alkaloids A group of related plant alkaloids that contain the BERBERINE heterocyclic ring structure. Berbines,Alkaloids, Berberine

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