title: [Determination of triptophenolide in Chinese herb leigongteng by TLCS].
abstract: OBJECTIVE
  To establish a method for the determination of triptophenolide in Chinese herb Leigongteng (Tripterygium wilfordii Hook. f.).
  
  
  METHODS
  TLCS was used. The sample was purified with a column and developed upwardly with CHCl3-EtOEt(2:1), sprayed with Keddle testing solution and scanned. The content was calculated with external two-point method.
  
  
  RESULTS
  The linear range was 2.1 micrograms-10.5 micrograms, r = 0.998.
  
  
  CONCLUSIONS
  The method is proper for the quality control of Leigongteng.
authors.affiliation: Guangzhou University of TCM, Guangzhou 510407.
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: L
authors.initials: L
authors.lastname: Zhou
mesh_terms: D002855:Chromatography, Thin Layer / Q000379:methods; D003720:Densitometry; D004224:Diterpenes / Q000032:analysis*; D004365:Drugs, Chinese Herbal / Q000032:analysis*; D010946:Plants, Medicinal / Q000737:chemistry* / Q000254:growth & development; D011786:Quality Control; D029757:Tripterygium / Q000737:chemistry* / Q000254:growth & development
chemical_list: D004224:Diterpenes; D004365:Drugs, Chinese Herbal; C035061:triptophenolide