title: [Determination of buddlejasaponin IV in Clinòpodium Linn. by HPLC].
abstract: OBJECTIVE
  To determine the contents of buddlejasaponin IV in Clinopodium plants.
  
  
  METHODS
  A high-performance liquid chromatographic method was used to determine buddlejasaponin IV in Clinopodium plants and Tabellae Clinopodii. The determination was carried out on a C18 reversed-phase column by methanol-water(70:30) elution solvent with UV detection at 210 nm.
  
  
  RESULTS
  The contents of buddlejasaponin IV in different samples were different. The average recovery was 101.3% and RSD 1.73%.
  
  
  CONCLUSIONS
  The method for determining buddlejasaponin IV was established for the first time.
authors.affiliation: Institute of Medicinal Plant, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100094.
authors.forename: Y
authors.initials: Y
authors.lastname: Li
authors.forename: J
authors.initials: J
authors.lastname: Chen
mesh_terms: D002851:Chromatography, High Pressure Liquid; D019686:Lamiaceae / Q000737:chemistry* / Q000145:classification; D010946:Plants, Medicinal / Q000737:chemistry* / Q000145:classification; D012503:Saponins / Q000032:analysis*; D014315:Triterpenes / Q000032:analysis*
chemical_list: D012503:Saponins; D014315:Triterpenes; C418227:buddlejasaponin IV