Ethynodiol diacetate Synonyms: (3-beta,17-alpha)-19-Norpregn-4-en-20-yne-3,17-diol diacetate CAS: 297-76-7 Molecular ... :No.496,Zhongshan Road, Wuhan 430064, Hubei, China Capital:RMB 20 million Main product:Cinnamic series, Cinnamic acid, Cinnamic alcohol, Cinnamic ...