title: 269. Steroid total synthesis. 8. (+)-Estr-4-ene-3, 17-dione.
mesh_terms: D002855:Chromatography, Thin Layer; D004962:Estranes / Q000138:chemical synthesis*; D007664:Ketosteroids / Q000138:chemical synthesis; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009904:Optical Rotation; D013055:Spectrophotometry, Infrared
chemical_list: D004962:Estranes; D007664:Ketosteroids