Quinazolinone

4-Quinazolinone
Names
	Preferred IUPAC name Quinazolin-4(3H)-one
	Other names 4(3H)-Quinazolinone; 4(1H)-Quinazolinone; 3,4-Dihydroquinazolin-4-one; 4(3H)-Quinazolone; 4-Hydroxyquinazoline; 4-Oxo-3,4-dihydroquinazoline; 4-Oxoquinazoline; 4-Quinazolinol; 4-Quinazolinone; 4-Quinazolone
Identifiers
CAS Number	491-36-1 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL266540;
ChemSpider	56797;
PubChem CID	63112;
UNII	84JOT4EY5X ;
	InChI InChI=1S/C8H6N2O/c11-8-6-3-1-2-4-7(6)9-5-10-8/h1-5H,(H,9,10,11);
	SMILES O=C2\N=C/Nc1ccccc12;
Properties
Chemical formula	C8H6N2O
Molar mass	146.149 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Quinazolinone is a heterocyclic chemical compound, a quinazoline with a carbonyl group in the C₄N₂ ring. Two isomers are possible: 2-quinazolinone and 4-quinazolinone, with the 4-isomer being the more common. These compounds are of interest in medicinal chemistry.

2-Quinazolinone
4-Quinazolinone