3,3,20,20-bis(ethylene-dioxy)-17i -Hydroxy-19-norpregna-5(10),9(11)-diene

Jinan Chenghui Shuangda Chemical Co., Ltd is a high-tech enterprise which professionally produces pharmaceutical intermediates. The company has engaged in research, development and production of pharmaceutical intermediates for more than 20 years. It combines research, development, production, import and export trade as a whole, and it has great technical power, advanced detection means, strong research and development ability and superb synthetic technique. It is a high-tech enterprise in Shandong province and the engineering and technological research center of Shandong province.The company is committed to drug synthesis in fields of nutrition, narcotic analgesic, anticancer, antidepression, anti-senile dementia and cardiovascular, especially in the aspect of narcotic analgesic and nutrition, as to which, the company is in the domestic leading position. Products of the company are mainly exported to more than 40 countries and areas in Southeast Asia, South America and Eastern Europe.