Chromone

Chromone
Names
	IUPAC name Chromen-4-one
	Preferred IUPAC name 4H-1-Benzopyran-4-one
	Other names 4-Chromone; 1,4-Benzopyrone; 4H-Chromen-4-one; Benzo-gamma-pyrone; 1-Benzopyran-4-one; 4H-Benzo(b)pyran-4-one
Identifiers
CAS Number	491-38-3 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:72013 ;
ChEMBL	ChEMBL13311 ;
ChemSpider	9866 ;
ECHA InfoCard	100.007.035
PubChem CID	10286;
UNII	20C556MJ76 ;
CompTox Dashboard (EPA)	DTXSID40197680 ;
	InChI InChI=1S/C9H6O2/c10-8-5-6-11-9-4-2-1-3-7(8)9/h1-6H Key: OTAFHZMPRISVEM-UHFFFAOYSA-N ; InChI=1/C9H6O2/c10-8-5-6-11-9-4-2-1-3-7(8)9/h1-6H Key: OTAFHZMPRISVEM-UHFFFAOYAY;
	SMILES O=C1C=COc2ccccc12;
Properties
Chemical formula	C9H6O2
Molar mass	146.145 g·mol−1
Acidity (pKa)	−2.0 (of conjugate acid)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Chromone (or 1,4-benzopyrone) is a derivative of benzopyran with a substituted keto group on the pyran ring. It is an isomer of coumarin.

Derivatives of chromone are collectively known as chromones. Most, though not all, chromones are also phenylpropanoids.