Calculated on dry goods, including C18H24O2 should be 97.0 ~ 103.0%.
【 characteristics 】 the goods is white or milk white crystalline powder; Odourless.
The goods in dioxane or dissolved in acetone, slightly soluble in ethanol, insoluble in water.
Melting point the melting point of the goods (in Chinese pharmacopeia 1990 edition of appendix 15 pages) should be 175 ~ 180 ℃.
Than the curl to take the goods, precision said, adding dioxane dissolving and quantitative dilution solution of each 1 ml contains 10 mg, determined in accordance with the law, [1] than curl should be + + 32 ° 75 °.