title: [Determination of tetramethylpyrazine in traditional Chinese medicines by high performance liquid chromatography].
abstract: This paper reports a method for determining tetramethyl pyrazine in pilules, injections and extracts of Ligusticum chuanxiong by high performance liquid chromatography. The results showed the recovery rate to be higher than 97% and the coefficient of variation (CV) to be 1.39% (with in day) and 1.51% (day to day). The lowest detection amount was 0.005 micrograms. The method was easy, fast and accurate.
authors.affiliation: 88th Hospital of PLA, Taian.
authors.forename: Z
authors.initials: Z
authors.lastname: Zhao
authors.forename: H
authors.initials: H
authors.lastname: Yu
authors.forename: K
authors.initials: K
authors.lastname: Lu
authors.forename: S
authors.initials: S
authors.lastname: Yang
mesh_terms: D002851:Chromatography, High Pressure Liquid; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D011719:Pyrazines / Q000032:analysis*; D014665:Vasodilator Agents / Q000032:analysis*
chemical_list: D004365:Drugs, Chinese Herbal; D011719:Pyrazines; D014665:Vasodilator Agents; C017953:tetramethylpyrazine