Purpurogallin

Purpurogallin
Names
	Preferred IUPAC name 1,7,8,9-Tetrahydroxy-2H-benzo[7]annulen-2-one
	Other names Purpurogalline; 2,3,4,6-Tetrahydroxybenzocyclohepten-5-one; PPG
Identifiers
CAS Number	569-77-7 ;
3D model ( JSmol)	Interactive image;
ChEBI	CHEBI:8647 ;
ChemSpider	4444893 ;
ECHA InfoCard	100.008.478
KEGG	C09964 ;
MeSH	C026133
PubChem CID	5281571;
UNII	L3Z7U4N28P ;
CompTox Dashboard (EPA)	DTXSID40205436 ;
	InChI InChI=1S/C11H8O5/c12-6-3-1-2-5-4-7(13)10(15)11(16)8(5)9(6)14/h1-4,13,15-16H,(H,12,14) Key: WDGFFVCWBZVLCE-UHFFFAOYSA-N ;
	SMILES C1=CC(=O)C(=C2C(=C1)C=C(C(=C2O)O)O)O;
Properties
Chemical formula	C11H8O5
Molar mass	220.180 g·mol−1
Appearance	Red crystalline solid
	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