title: NEW PROGESTATIONAL AGENTS. NONCLASSICAL 17-ALKYLPREGNENE STRUCTURES.
mesh_terms: D002626:Chemistry, Pharmaceutical; D010600:Pharmacology; D011372:Progestins; D012106:Research; D013256:Steroids
chemical_list: D011372:Progestins; D013256:Steroids
keywords: CHEMISTRY, PHARMACEUTICAL; EXPERIMENTAL LAB STUDY; PHARMACOLOGY; PROGESTATIONAL HORMONES; STEROIDS