title: 14 , 17 -Alkylidenedioxyprogesterone derivatives.
mesh_terms: D000818:Animals; D003270:Contraceptive Agents / Q000008:administration & dosage / Q000138:chemical synthesis* / Q000494:pharmacology; D004149:Dioxoles / Q000008:administration & dosage / Q000138:chemical synthesis / Q000494:pharmacology; D005260:Female; D005306:Fertilization / Q000187:drug effects; D007279:Injections, Subcutaneous; D011374:Progesterone / Q000008:administration & dosage / Q000138:chemical synthesis* / Q000494:pharmacology; D011817:Rabbits; D051381:Rats; D011919:Rats, Inbred Strains; D013329:Structure-Activity Relationship; D013997:Time Factors
chemical_list: D003270:Contraceptive Agents; D004149:Dioxoles; D011374:Progesterone