title: 241. Geijerone (3-isopropenyl-4-methyl-4-vinylcyclohexanone), a new, naturally occurring C 12  terpenoid.
mesh_terms: D003510:Cyclohexanes / Q000138:chemical synthesis / Q000302:isolation & purification*; D003512:Cyclohexanones; D007659:Ketones / Q000138:chemical synthesis / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D009822:Oils, Volatile / Q000032:analysis; D009904:Optical Rotation; D010944:Plants / Q000032:analysis; D012717:Sesquiterpenes; D013729:Terpenes / Q000138:chemical synthesis / Q000302:isolation & purification*; D014753:Vinyl Compounds / Q000138:chemical synthesis / Q000302:isolation & purification
chemical_list: D003510:Cyclohexanes; D003512:Cyclohexanones; D007659:Ketones; D009822:Oils, Volatile; D012717:Sesquiterpenes; D013729:Terpenes; D014753:Vinyl Compounds; C002207:geijerone