Riligustilide
Riligustilide is a nonsteroidal phytoprogestogen that is found in Ligusticum chuanxiong. It is a very weak agonist of the progesterone receptor. Another compound in the plant, 3,8-dihydrodiligustilide, is also a phytoprogestogen, but is almost 1,000-fold more potent in comparison.
