title: [Determination of synephrine and N-methyltyramine in Pericarpium Citri Reticulatae viride by HPLC].
abstract: OBJECTIVE
  To establish a quantitative method for determination of synephrine and N-methyltyramine in Citri Reticulatae.
  
  
  METHODS
  Samples were extracted with 30% methanol. ODS column was used with methanol-water-sodium dodecyl sulfate (55:45:0.1) as mobile phase. Detection wavelength was 285 nm.
  
  
  RESULTS
  Synephrine and N-methyltyramine in sample solution were well separated. Linearity of synephrine was good (r = 0.9999) in range of 0.35-11.24 microg. The average recovery was 97.1%, and RSD of repeatability was 1.9%.
  
  
  CONCLUSIONS
  This method can be used for quality control of Citri Reticulatae.
authors.affiliation: Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medicine, Beijing 100700, China.
authors.forename: Xian-duan
authors.initials: XD
authors.lastname: Li
authors.forename: Zhi-jing
authors.initials: ZJ
authors.lastname: Ma
authors.forename: Sheng
authors.initials: S
authors.lastname: Lin
authors.forename: Xue-zhu
authors.initials: XZ
authors.lastname: Gu
authors.forename: Shu-jie
authors.initials: SJ
authors.lastname: Mao
mesh_terms: D002851:Chromatography, High Pressure Liquid; D002957:Citrus / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011786:Quality Control; D012621:Seasons; D013578:Synephrine / Q000032:analysis*; D014439:Tyramine / Q000031:analogs & derivatives* / Q000032:analysis
chemical_list: C036244:methyl-4-tyramine; D013578:Synephrine; D014439:Tyramine