title: The synthesis of 2,5- and 4,5-dihydroxyxanthone.
mesh_terms: D000215:Acylation; D006900:Hydroxylation; D007659:Ketones / Q000138:chemical synthesis; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D010782:Photolysis; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D014966:Xanthenes / Q000138:chemical synthesis*
chemical_list: D007659:Ketones; D014966:Xanthenes