Title: flavones
Long Title: IUPAC Gold Book - flavones
DOI: 10.1351/goldbook.09968
Status: current

Definition
Flavones and 3-hydroxyflavones (flavonols) are compounds with a 2-phenyl-4\(H\)-1-benzopyran-4-one (2-phenyl-4\(H\)-chromen-4-one) skeleton 5.

Note
The term "flavonol" is used as a class name for compounds with a 3-hydroxy-2-phenyl-4\(H\)-1-benzopyran-4-one (3-hydroxy-2-phenyl-4\(H\)-chromen-4-one) skeleton 6.

Source
- PAC, 2018, 90, 1429. 'Nomenclature of flavonoids (IUPAC Recommendations 2017)' on page 1432 (https://doi.org/10.1515/pac-2013-0919)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/09968/html
- json: https://goldbook.iupac.org/terms/view/09968/json
- xml: https://goldbook.iupac.org/terms/view/09968/xml

Citation: Citation: 'flavones' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.09968
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Accessed: 2026-06-13T13:06:40+00:00