Biomaterial Database

Sensitive and specific gas chromatographic and extraction method for the determination of orphenadrine in human body fluids. 1977

J J Labout, and C T Thijssen, and W Hespe

A gas chromatographic and extraction method for the assay of orphenadrine in plasma and urine has been developed, in which diphenhydramine is used as the internal standard. The procedure involves extraction with isopentane and alkali flame ionization (nitrogen) detection. Orphenadrine N-oxide and N-dealkylated orphenadrine did not interfere with the analysis. Orphenadrine concentrations down to 1 ng/ml can be determined. Application in a pharmacokinetic/bioavailability study is reported.

UI	MeSH Term	Description	Entries
D009966	Orphenadrine	A muscarinic antagonist used to treat drug-induced parkinsonism and to relieve pain from muscle spasm.	Methyldiphenylhydramine,Disipal,Lysantin,Mefenamine,Mephenamine,Norflex,Norflex Orphenadrine Citrate,Orphenadrine Citrate,Orphenadrine Hydrochloride,Sodium Mefenamine,Citrate, Norflex Orphenadrine,Citrate, Orphenadrine,Hydrochloride, Orphenadrine,Mefenamine, Sodium,Orphenadrine Citrate, Norflex
D002849	Chromatography, Gas	Fractionation of a vaporized sample as a consequence of partition between a mobile gaseous phase and a stationary phase held in a column. Two types are gas-solid chromatography, where the fixed phase is a solid, and gas-liquid, in which the stationary phase is a nonvolatile liquid supported on an inert solid matrix.	Chromatography, Gas-Liquid,Gas Chromatography,Chromatographies, Gas,Chromatographies, Gas-Liquid,Chromatography, Gas Liquid,Gas Chromatographies,Gas-Liquid Chromatographies,Gas-Liquid Chromatography
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001682	Biological Availability	The extent to which the active ingredient of a drug dosage form becomes available at the site of drug action or in a biological medium believed to reflect accessibility to a site of action.	Availability Equivalency,Bioavailability,Physiologic Availability,Availability, Biologic,Availability, Biological,Availability, Physiologic,Biologic Availability,Availabilities, Biologic,Availabilities, Biological,Availabilities, Physiologic,Availability Equivalencies,Bioavailabilities,Biologic Availabilities,Biological Availabilities,Equivalencies, Availability,Equivalency, Availability,Physiologic Availabilities