Synonyms: Phenol,4,4'-(diethylideneethylene)di- (7CI,8CI); 2,4-Hexadiene,3,4-bis(4-hydroxyphenyl)-; 3,4-Bis(p-hydroxyphenyl)-2,4-hexadiene;3,4-Di-p-(hydroxyphenyl)hexa-2,4-diene; 4,4'-(Diethylideneethylene)diphenol;4,4'-Dihydroxy-g,d-diphenyl-b,d-hexadiene; Cycladiene; DV;Di-(p-oxyphenyl)-2,4-hexadiene; Dienesterol; Dienestrol; Dienoestrol; Dienol;Dinovex; Estrodienol; Estroral; Follidiene; Follormon; Gynefollin; Hormofemin;NSC 59809; Oestrasid; Oestrodiene; Oestroral; Restrol; Retalon; Sexadien;Synestrol; Teserene; p,p'-(Diethylideneethylene)diphenol