Isoflavones are compounds with a 3-phenyl-4$H$-1-benzopyran-4-one (3-phenyl-4$H$-chromen-4-one) skeleton 9. They may be substituted.
Source: PAC, 2018,
90, 1429. (
Nomenclature of flavonoids (IUPAC Recommendations 2017)) on page 1433 [
Terms] [
Paper]
