Oxazole

Oxazole
Names
	Preferred IUPAC name 1,3-Oxazole
Identifiers
CAS Number	288-42-6 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	103851
ChEBI	CHEBI:35597 ;
ChEMBL	ChEMBL2171710;
ChemSpider	8898 ;
ECHA InfoCard	100.005.474
EC Number	206-020-8;
Gmelin Reference	485850
MeSH	D010080
PubChem CID	9255;
UNII	FJZ20I1LPS ;
CompTox Dashboard (EPA)	DTXSID70182983 ;
	InChI InChI=1S/C3H3NO/c1-2-5-3-4-1/h1-3H Key: ZCQWOFVYLHDMMC-UHFFFAOYSA-N ; InChI=1/C3H3NO/c1-2-5-3-4-1/h1-3H Key: ZCQWOFVYLHDMMC-UHFFFAOYAD;
	SMILES C1=COC=N1;
Properties
Chemical formula	C3H3NO
Molar mass	69.06 g/mol
Density	1.050 g/cm3
Boiling point	69.5 °C (157.1 °F; 342.6 K)
Acidity (pKa)	0.8 (of conjugate acid)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H318
Precautionary statements	P210, P233, P240, P241, P242, P243, P264+P265, P280, P303+P361+P353, P305+P354+P338, P317, P370+P378, P403+P235, P501
Supplementary data page
	Oxazole (data page)
	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

Oxazole is the parent compound for a vast class of heterocyclic aromatic organic compounds. These are azoles with an oxygen and a nitrogen separated by one carbon. Oxazoles are aromatic compounds but less so than the thiazoles. Oxazole is a weak base; its conjugate acid has a pK_a of 0.8, compared to 7 for imidazole.

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