Bionovo was an American biotechnology company focused on the discovery and development of botanically derived treatments for women's health and cancer based in Emeryville, California. The company had two drug candidates in U.S. Food and Drug Administration (FDA) clinical trials- Menerba a selective estrogen receptor beta agonist for hot flashes associated with menopause and Bezielle for advanced breast cancer. The company has ceased activity and its stock, although still listed, not moved from 0,00 USD since the end of 2012. No statement has been made by the management, nor any indication has been given that the company is still active. The last press statement was about the sell of all the technical equipment and lay off of 90% of the staff. In short words, the company is as good as bankrupted and shut down, although the management never officially admitted it.
Read article on Wikipedia