Isocoumarin

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

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 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:38759 N
ChEMBL	ChEMBL457811 Y
ChemSpider	61416 Y
PubChem CID	68108
UNII	SR89982S3E Y
CompTox Dashboard (EPA)	DTXSID8060080
InChI InChI=1S/C9H6O2/c10-9-8-4-2-1-3-7(8)5-6-11-9/h1-6H Y Key: IQZZFVDIZRWADY-UHFFFAOYSA-N Y
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). N verify (what is YN ?) Infobox references

Known natural compounds

• Thunberginol A and B

dihydroisocoumarins

• 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]

See also

• Coumarin