Thunberginol B

Names
Preferred IUPAC name 3-(3,4-Dihydroxyphenyl)-6,8-dihydroxy-1H-2-benzopyran-1-one
Identifiers
CAS Number	147666-81-7 Y
3D model (JSmol)	Interactive image
ChemSpider	4583010 N
PubChem CID	5473310
UNII	D2866L3MW5 Y
CompTox Dashboard (EPA)	DTXSID90163774
InChI InChI=1S/C15H10O6/c16-9-3-8-5-13(7-1-2-10(17)11(18)4-7)21-15(20)14(8)12(19)6-9/h1-6,16-19H N Key: NHFGEHLUROYMEB-UHFFFAOYSA-N N
SMILES C1=CC(=C(C=C1C2=CC3=CC(=CC(=C3C(=O)O2)O)O)O)O
Properties
Chemical formula	C15H10O6
Molar mass	286.23 g/mol
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

Thunberginol B is an isocoumarin found in Hydrangeae Dulcis Folium, the processed leaves of Hydrangea macrophylla var. thunbergii.^[1]