title: [Study on antiimplantation drugs. II. Synthesis of 1-trifluoromethyl-1,2- diphenylethylenes (author's transl)].
mesh_terms: D000818:Animals; D003281:Contraceptives, Postcoital / Q000138:chemical synthesis*; D003283:Contraceptives, Postcoital, Synthetic / Q000138:chemical synthesis*; D010064:Embryo Implantation / Q000187:drug effects; D005260:Female; D051381:Rats; D013267:Stilbenes / Q000138:chemical synthesis*
chemical_list: D003281:Contraceptives, Postcoital; D003283:Contraceptives, Postcoital, Synthetic; D013267:Stilbenes; C031408:1-trifluoromethyl-1,2-diphenylethylene