Hematein

Hematein
Names
	IUPAC name 3,4,6a,10-Tetrahydroxy-6,7-dihydroindeno[2,1-c]chromen-9-one
	Other names Haematein; Haematein
Identifiers
CAS Number	475-25-2 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:90116 ;
ChEMBL	ChEMBL1360563 ;
ChemSpider	9732 ;
ECHA InfoCard	100.006.813
MeSH	Hematein
PubChem CID	10138;
UNII	88Q1SYD10B ;
CompTox Dashboard (EPA)	DTXSID40874767 ;
	InChI InChI=1S/C16H12O6/c17-10-2-1-8-13-9-4-12(19)11(18)3-7(9)5-16(13,21)6-22-15(8)14(10)20/h1-4,17,19-21H,5-6H2 Key: HLUCICHZHWJHLL-UHFFFAOYSA-N ; InChI=1/C16H12O6/c17-10-2-1-8-13-9-4-12(19)11(18)3-7(9)5-16(13,21)6-22-15(8)14(10)20/h1-4,17,19-21H,5-6H2 Key: HLUCICHZHWJHLL-UHFFFAOYAU;
	SMILES C1C2=CC(=O)C(=CC2=C3C1(COC4=C3C=CC(=C4O)O)O)O;
Properties
Chemical formula	C16H12O6
Molar mass	300.266 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

Hematein (US spelling) or haematein is an oxidized derivative of haematoxylin, used in staining. Haematein should not be confused with haematin, which is a brown to black iron-containing pigment formed by decomposition of haemoglobin. In the Colour Index (but nowhere else), haematein is called haematine.