title: PROTOTROPIC TAUTOMERISM OF HETEROAROMATIC COMPOUNDS. 3. FIVE-MEMBERED RINGS AND ONE HETERO ATOM.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D006571:Heterocyclic Compounds; D019736:Prostheses and Implants
chemical_list: D006571:Heterocyclic Compounds
keywords: CHEMISTRY; HETEROCYCLIC COMPOUNDS; REVIEW