Oxepine

Oxepine
Names
	Preferred IUPAC name Oxepine
	Other names Oxacycloheptatriene
Identifiers
CAS Number	291-70-3 ;
3D model (JSmol)	Interactive image;
ChemSpider	4953942 ;
PubChem CID	6451477;
UNII	CVP5X85XX5 ;
CompTox Dashboard (EPA)	DTXSID10183353 ;
	InChI InChI=1S/C6H6O/c1-2-4-6-7-5-3-1/h1-6H Key: ATYBXHSAIOKLMG-UHFFFAOYSA-N ; InChI=1/C6H6O/c1-2-4-6-7-5-3-1/h1-6H Key: ATYBXHSAIOKLMG-UHFFFAOYAS;
	SMILES C1=CC=COC=C1;
Properties
Chemical formula	C6H6O
Molar mass	94.113 g·mol−1
Related compounds
Related compounds	Cyclohexene oxide; Oxonane
	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

Oxepine is an oxygen-containing heterocycle consisting of a seven-membered ring with three double bonds. The parent C₆H₆O exists as an equilibrium mixture with benzene oxide.

The oxepin–benzene oxide equilibrium is affected by the ring substituents. A related dimethyl derivative exists mainly as the oxepine isomer, an orange liquid.

Oxepine is an intermediate in the oxidation of benzene by the cytochrome P450 (CYP). Other arene oxides are metabolites of the parent arene.