Biomaterial Database

High-performance liquid chromatographic determination of triazolam and its metabolites in human urine. 1987

T Inoue, and S Suzuki

National Research Institute of Police Science, Tokyo, Japan.

A high-performance liquid chromatographic method for the determination of triazolam and its main metabolites (1-hydroxymethyltriazolam and 4-hydroxytriazolam) in human urine has been developed. After hydrolysis with beta-glucuronidase, the unchanged drug and its metabolites were extracted with a Sep-Pak C18 cartridge and further purified by a Sep-Pak silica cartridge. The extract was chromatographed on a reversed-phase column using a mobile phase consisting of methanol-10 mM phosphate buffer, pH 8 (65:35) and UV detection at 220 nm. The overall recoveries of triazolam, 1-hydroxymethyltriazolam and 4-hydroxytriazolam were ca. 88, 75 and 75%, respectively, and the detection limits of these compounds were 5 ng/ml, using a 10-ml specimen.

UI	MeSH Term	Description	Entries
D012015	Reference Standards	A basis of value established for the measure of quantity, weight, extent or quality, e.g. weight standards, standard solutions, methods, techniques, and procedures used in diagnosis and therapy.	Standard Preparations,Standards, Reference,Preparations, Standard,Standardization,Standards,Preparation, Standard,Reference Standard,Standard Preparation,Standard, Reference
D002851	Chromatography, High Pressure Liquid	Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.	Chromatography, High Performance Liquid,Chromatography, High Speed Liquid,Chromatography, Liquid, High Pressure,HPLC,High Performance Liquid Chromatography,High-Performance Liquid Chromatography,UPLC,Ultra Performance Liquid Chromatography,Chromatography, High-Performance Liquid,High-Performance Liquid Chromatographies,Liquid Chromatography, High-Performance
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001711	Biotransformation	The chemical alteration of an exogenous substance by or in a biological system. The alteration may inactivate the compound or it may result in the production of an active metabolite of an inactive parent compound. The alterations may be divided into METABOLIC DETOXICATION, PHASE I and METABOLIC DETOXICATION, PHASE II.
D012822	Silicon Dioxide	Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.	Silica,Aerosil,Aerosil 380,Cristobalite,Quso G-32,Quso G32,Tridymite,380, Aerosil,Dioxide, Silicon,G32, Quso,Quso G 32
D012995	Solubility	The ability of a substance to be dissolved, i.e. to form a solution with another substance. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Solubilities
D013056	Spectrophotometry, Ultraviolet	Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example Cl2, SO2, NO2, CS2, ozone, mercury vapor, and various unsaturated compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Ultraviolet Spectrophotometry
D014229	Triazolam	A short-acting benzodiazepine used in the treatment of insomnia. Some countries temporarily withdrew triazolam from the market because of concerns about adverse reactions, mostly psychological, associated with higher dose ranges. Its use at lower doses with appropriate care and labeling has been reaffirmed by the FDA and most other countries.	Apo-Triazo,Gen-Triazolam,Halcion,Trilam,U-33,030,Apo Triazo,Gen Triazolam,U 33,030,U33,030