title: [Determination of triptolide in extract from leigongteng (Tripterygium Wilfordii Hook. F.) by RP-HPLC].
abstract: A reversed-phase liquid chromatographic method has been developed and validated for the analysis of triptolide in extract from Leigongteng (Tripterygium Wilfordii Hook. F.). The drugs were eluted with petroleum-ethyl acetate on a neutral alumina cartridge and then measured by HPLC using a Hypersil C18 column and acetonitrile-water (40:60, V/V) mobile phase. Triptolide was quantified by ultraviolet absorbance at 210 nm. The method proved to be linear in the range of 0.25-4.00 mg/L with a regression coefficient of 0.9997. The lower limit of detection of triptolide was 0.1 mg/L. Intra-day and inter-day coefficients of variation of assay for triptolide were 1.9%-6.5% (n = 5) and 2.7%-7.8% (n = 5), respectively. The recoveries of the method were 89.8%-92.0%.
authors.affiliation: Department of Instrumental Analysis, General Hospital of Nanjing Command, PLA, Nanjing, 210002.
authors.forename: K
authors.initials: K
authors.lastname: Li
authors.forename: Y
authors.initials: Y
authors.lastname: Yuan
authors.forename: X
authors.initials: X
authors.lastname: Dai
authors.forename: X
authors.initials: X
authors.lastname: Qao
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000032:analysis* / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004224:Diterpenes / Q000032:analysis*; D004365:Drugs, Chinese Herbal / Q000032:analysis / Q000737:chemistry*; D004852:Epoxy Compounds; D010616:Phenanthrenes; D029757:Tripterygium
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D004224:Diterpenes; D004365:Drugs, Chinese Herbal; D004852:Epoxy Compounds; D010616:Phenanthrenes; C001899:triptolide