title: [2-Nitro-3-hydroxychromone. 38. 4-pyrones].
mesh_terms: D002867:Chromones / Q000138:chemical synthesis*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009574:Nitro Compounds / Q000138:chemical synthesis; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D002867:Chromones; D009574:Nitro Compounds
vernacular_title: 2-Nitro-3-hydroxy-chromon. 38. Uber Untersuchungen an 4-Pyronen.