title: Chromone-2- and -3-carboxylic acids and their derivatives.
mesh_terms: D000215:Acylation; D000818:Animals; D001554:Benzene; D001993:Bronchodilator Agents; D002264:Carboxylic Acids / Q000138:chemical synthesis; D002867:Chromones / Q000138:chemical synthesis; D003116:Color; D003460:Crystallization; D004952:Esters / Q000138:chemical synthesis; D006801:Humans; D006863:Hydrogen-Ion Concentration; D006967:Hypersensitivity / Q000188:drug therapy; D046911:Macromolecular Substances; D009682:Magnetic Resonance Spectroscopy; D008956:Models, Chemical; D011714:Pyrans; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013057:Spectrum Analysis; D013696:Temperature; D014665:Vasodilator Agents
chemical_list: D001993:Bronchodilator Agents; D002264:Carboxylic Acids; D002867:Chromones; D004952:Esters; D046911:Macromolecular Substances; D011714:Pyrans; D014665:Vasodilator Agents; D001554:Benzene