title: Solution to quality assurance challenge 9.
authors.affiliation: Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Lessingstrasse 8, 07743, Jena, Germany.
authors.forename: Manfred
authors.initials: M
authors.lastname: Reichenbächer
authors.forename: Jürgen W
authors.initials: JW
authors.lastname: Einax
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods* / Q000592:standards; D004091:Hydromorphone / Q000031:analogs & derivatives* / Q000032:analysis; D011786:Quality Control
chemical_list: C076027:14-thioglycolamido-7,8-dihydromorphinone; D004091:Hydromorphone