title: Quantitative colorimetric and gas chromatographic determination of arecaidine propargyl ester.
abstract: Arecaidine propargyl ester (APE) is a potent muscarinic agonist often used in pharmacological studies. To date, no sensitive quantitative analytical method for APE has been published. In this study, two methods for the quantitative determination of APE are compared: a colorimetric assay, based on the formation of the corresponding ferric(III)-hydroxamic acid complex, and a direct gas chromatographic method, using arecoline as the internal standard. The latter method was found to be more precise. The utility of the gas chromatographic assay was further demonstrated in a stability study of the drug in the biological fluid aqueous humor of rabbits.
authors.affiliation: Institut für Pharmazeutische Technologie, Biozentrum-Niederursel, Johann Wolfgang Goethe-Universität, Frankfurt am Main, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Langer
authors.forename: G
authors.initials: G
authors.lastname: Lambrecht
authors.forename: U
authors.initials: U
authors.lastname: Moser
authors.forename: E
authors.initials: E
authors.lastname: Mutschler
authors.forename: J
authors.initials: J
authors.lastname: Kreuter
mesh_terms: D000818:Animals; D001082:Aqueous Humor / Q000737:chemistry*; D001115:Arecoline / Q000031:analogs & derivatives* / Q000032:analysis; D002849:Chromatography, Gas / Q000379:methods*; D003124:Colorimetry / Q000379:methods*; D018721:Muscarinic Agonists / Q000032:analysis*; D011817:Rabbits; D012015:Reference Standards
chemical_list: D018721:Muscarinic Agonists; C015000:arecaidine esters; D001115:Arecoline