Isocoumarin

Isocoumarin
Names
	Preferred IUPAC name 1H-2-Benzopyran-1-one
	Other names Iso-coumarin; 1H-Isochromen-1-one; 3,4-Benzo-2-pyrone
Identifiers
CAS Number	491-31-6 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:38759 ;
ChEMBL	ChEMBL457811 ;
ChemSpider	61416 ;
PubChem CID	68108;
UNII	SR89982S3E ;
CompTox Dashboard (EPA)	DTXSID8060080 ;
	InChI InChI=1S/C9H6O2/c10-9-8-4-2-1-3-7(8)5-6-11-9/h1-6H Key: IQZZFVDIZRWADY-UHFFFAOYSA-N ;
	SMILES O=C2O\C=C/c1c2cccc1;
Properties
Chemical formula	C9H6O2
Molar mass	146.145 g·mol−1
	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

Isocoumarin (1H-2-benzopyran-1-one; 3,4-benzo-2-pyrone) is a lactone, a type of natural organic compound.

Known natural compounds

Hydrangenol
Phyllodulcin
Thunberginol C, D, E and G
The derivative 3-acetyl-3,4-dihydro-5,6-dimethoxy-1H-2-benzopyran-1-one can be found in Huáng bǎi (Phellodendron chinense), one of the fifty fundamental herbs of traditional Chinese medicine.^[1]

^ Cui, WS; Tian, J; Ma, ZJ; Guo, YQ; Wang, JH; Li, X (2003). "A new isocoumarin from bark of Pellodendron chinense". Natural Product Research. 17 (6): 427–9. doi:10.1080/14786410310001617695. PMID 14577693.

Types of
Aglycones	Bergenon Thunberginol A and B
Dihydroisocoumarins	Hydrangenol Mellein 6-Hydroxymellein 6-Methoxymellein Monocerin Phyllodulcin Thunberginol C, D, E and G