title: Determination of tebufelone (a new anti-inflammatory drug) strength and stability in bulk drug, dosage formulations and feed admixtures by reversed-phase high-performance liquid chromatography.
abstract: A rugged reversed-phase high-performance liquid chromatographic method suitable for the quantitative determination of tebufelone, a new anti-inflammatory drug, in bulk drug, various pharmaceutical formulations and animal feed admixtures is described. Tebufelone was easily separated from synthetic by-products and detected by ultraviolet absorption (280 nm). Standard curves were linear (r2 greater than 0.999) over 2 orders of magnitude with a detection limit of 0.1 microgram/ml at a signal-to-noise ratio of 2 (0.05 ml injected). Recovery of tebufelone from bulk drug and dosage formulations was greater than 99% with a coefficient of variation of 1.8% throughout the range of the standard curve. Recovery of tebufelone from feed admixtures was 96-102% with a less than 5% relative standard deviation at the levels assayed.
authors.affiliation: Procter & Gamble Company, Miami Valley Laboratories, Cincinnati, OH 45239-8707.
authors.forename: R M
authors.initials: RM
authors.lastname: Kaffenberger
authors.forename: T H
authors.initials: TH
authors.lastname: Eichhold
authors.forename: M J
authors.initials: MJ
authors.lastname: Doyle
mesh_terms: D000480:Alkynes / Q000032:analysis*; D000821:Animal Feed / Q000032:analysis*; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004355:Drug Stability; D010636:Phenols / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000480:Alkynes; D000894:Anti-Inflammatory Agents, Non-Steroidal; D010636:Phenols; C064268:tebufelone