Methods: Qualitative analysis by TLC, a mixed solvent of n-hexane - ethyl acetate - acetic acid(6:4:0.25) was employed as the mobile phase,color developing agent was 10%sulfuric acid and ethanol solution.

• 方法:薄层鉴别采用硅胶G薄层板；展开剂:正己烷-醋酸乙酯-冰醋酸(6:4:0.；25)；显色剂:10%25硫酸乙醇溶液;