1,3-Indandione

1,3-Indandione
Names
	Preferred IUPAC name 1H-Indene-1,3(2H)-dione
	Other names Indandione; 1,3-Diketohydrindene; 1,3-Dioxoindane; 1,3-Hydrindendione
Identifiers
CAS Number	606-23-5 ;
3D model (JSmol)	Interactive image; Interactive image;
ChEBI	CHEBI:78877;
ChEMBL	ChEMBL283521 ;
ChemSpider	11322 ;
ECHA InfoCard	100.009.191
PubChem CID	11815;
UNII	4DJN7YG35G ;
CompTox Dashboard (EPA)	DTXSID2060547 ;
	InChI InChI=1S/C9H6O2/c10-8-5-9(11)7-4-2-1-3-6(7)8/h1-4H,5H2 Key: UHKAJLSKXBADFT-UHFFFAOYSA-N ; InChI=1/C9H6O2/c10-8-5-9(11)7-4-2-1-3-6(7)8/h1-4H,5H2 Key: UHKAJLSKXBADFT-UHFFFAOYAR;
	SMILES C1C(=O)C2=CC=CC=C2C1=O; O=C2c1ccccc1C(=O)C2;
Properties
Chemical formula	C9H6O2
Molar mass	146.145 g·mol−1
Appearance	white solid
Density	1.37 g/cm3
Melting point	129 to 132 °C (264 to 270 °F; 402 to 405 K)
Solubility in water	slight
	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

1,3-Indandione (sometimes simply indanedione) is an organic compound with the molecular formula C₆H₄(CO)₂CH₂. It is a β-diketone with indane as its structural nucleus. It is a colorless or white solid, but old samples can appear yellowish or even green. It is a popular chemical scaffold (building block of various useful chemical compounds), and derivatives antagonize Vitamin K receptors.