Osthol, also known as methoxyparsley, parsley methyl ether, is a coumarin compounds, in the umbrella plant osthol content is high, so called osthol.
In 1909, Herzog and Krohn first obtained the compound osthol from the roots of the umbrella plant europhus. At present, it is widely found in plants, mainly in umbelliferae and rutaceae, and also in a few compositae and legumes.
Commercial cnidium cnidium is mainly extracted from dried and ripe fruit of cnidium cnidium. Cnidium is mainly distributed in guangxi, jiangsu, anhui, shandong, hebei, etc. Because of its various biological activities, cnidium is widely used in cosmetics,medicine and agriculture.