title: The chemistry of 9 ,19-cyclo steroid derivatives.
mesh_terms: D004149:Dioxoles / Q000138:chemical synthesis; D006914:Hydroxysteroids / Q000138:chemical synthesis; D007259:Infrared Rays; D007664:Ketosteroids / Q000138:chemical synthesis; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009904:Optical Rotation; D011278:Pregnanes / Q000138:chemical synthesis*; D013057:Spectrum Analysis; D013729:Terpenes / Q000138:chemical synthesis
chemical_list: D004149:Dioxoles; D006914:Hydroxysteroids; D007664:Ketosteroids; D011278:Pregnanes; D013729:Terpenes