[Determination of tetramethylpyrazine in traditional Chinese medicines by high performance liquid chromatography].
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.
Zhao
Z
Z
88th Hospital of PLA, Taian.
Yu
H
H
Lu
K
K
Yang
S
S
D002851:Chromatography, High Pressure Liquid; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D011719:Pyrazines / Q000032:analysis*; D014665:Vasodilator Agents / Q000032:analysis*
D004365:Drugs, Chinese Herbal; D011719:Pyrazines; D014665:Vasodilator Agents; C017953:tetramethylpyrazine