1,4-Dihydroxyanthraquinone

1,4-Dihydroxyanthraquinone
Names
	Preferred IUPAC name 1,4-Dihydroxyanthracene-9,10-dione
	Other names Quinizarin; Solvent Orange 86
Identifiers
CAS Number	81-64-1 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:37487 ;
ChEMBL	ChEMBL17594 ;
ChemSpider	6433 ;
ECHA InfoCard	100.001.245
PubChem CID	6688;
UNII	8S496ZV3CS ;
CompTox Dashboard (EPA)	DTXSID8044464 ;
	InChI InChI=1S/C14H8O4/c15-9-5-6-10(16)12-11(9)13(17)7-3-1-2-4-8(7)14(12)18/h1-6,15-16H Key: GUEIZVNYDFNHJU-UHFFFAOYSA-N ; InChI=1/C14H8O4/c15-9-5-6-10(16)12-11(9)13(17)7-3-1-2-4-8(7)14(12)18/h1-6,15-16H Key: GUEIZVNYDFNHJU-UHFFFAOYAX;
	SMILES O=C2c1ccccc1C(=O)c3c2c(O)ccc3O;
Properties
Chemical formula	C14H8O4
Molar mass	240.21 g/mol
Appearance	Orange or red-brown crystalline powder
Melting point	198 to 199 °C (388 to 390 °F; 471 to 472 K)
Boiling point	450 °C (842 °F; 723 K)
	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

1,4-Dihydroxyanthraquinone, also called quinizarin or Solvent Orange 86, is an organic compound derived from anthroquinone. Quinizarin is an orange or red-brown crystalline powder. It is formally derived from anthraquinone by replacement of two hydrogen atoms by hydroxyl (OH) groups. It is one of ten dihydroxyanthraquinone isomers and occurs in small amounts (as a glycoside) in the root of the madder plant, Rubia tinctorum.