Benzoxazole

Benzoxazole
Benzoxazole Benzoxazole
General
Systematic name	benzoxazole
Other names	1-Oxa-3-aza-1H-indene
Molecular formula	C7H5NO
SMILES	O1C=NC2=CC=CC=C12
Molar mass	119.12 g/mol
Appearance	white to light yellow solid
CAS number	[273-53-0]
Properties
Density and phase	? g/cm3, ?
Solubility in water	insol.
Melting point	27 - 30 °C (? K)
Boiling point	182 °C (? K)
Hazards
MSDS	External MSDS
Main hazards	?
NFPA 704
Flash point	58 °C
R/S statement	R: ? S: ?
RTECS number	?
Related compounds
Related compounds	oxazole indole benzofuran
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Benzoxazole is an aromatic organic compound with a molecular formula C₇H₅NO, a benzene-fused oxazole ring structure, and an odor similar to pyridine. Benzoxazole has no household use. It is used primarily in industry and research.

Being a heterocyclic compound, benzoxazole finds use in research as a starting material for the synthesis of larger, usually bioactive structures. It is found within the chemical structures of pharmaceutical drugs such as flunoxaprofen.

Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.

See also

• Isoxazole, an analog with the nitrogen atom in position 2.
• Imidazole, an analog with the oxygen replaced by a nitrogen.
• Thiazole, an analog with the oxygen replaced by a sulfur.
• Pyrrole, an analog without the oxygen atom.
• Furan, an analog without the nitrogen atom.
• Oxazoline, which has one double bond reduced.
• Oxazolidinedione, which has both double bonds reduced.
• Oxazolidine, which has both double bonds reduced.
• Oxazolidinone
• Simple aromatic rings