title: [Not Available].
abstract: Some N-methylated derivatives of thionine have been separated from thionine, Methylene Blue, and each other by solvent extraction into carbon tetrachloride from an aqueous solution buffered to the pH appropriate for each compound. The method can be used to purify the dyes.
authors.affiliation: Départment de Chimie-Physique, Faculté des Sciences de Bordeaux.
authors.forename: R
authors.initials: R
authors.lastname: Bonneau
authors.forename: J
authors.initials: J
authors.lastname: Faure
authors.forename: J
authors.initials: J
authors.lastname: Joussot-Dubien