Anthranil

Not to be confused with 1,2-Benzisoxazole.

Anthranil (2,1-benzisoxazole) is an organic compound with a molecular formula C₇H₅NO, which features a fused benzene-isoxazole bicyclic ring structure. It is an isomer of the more common compounds benzoxazole and benzisoxazole, which have their oxygen atoms located in the 1-position. The locations of the heteroatoms in anthranil results in disrupted aromaticity, making it by far the least stable of the 3 structural isomers.^[2]

Anthranil

Names
Preferred IUPAC name 2,1-Benzoxazole
Identifiers
CAS Number	271-58-9 Y
3D model (JSmol)	Interactive image
Beilstein Reference	2222
ChEBI	CHEBI:51555
ChEMBL	ChEMBL508432
ChemSpider	60822
ECHA InfoCard	100.005.437
EC Number	205-980-5
PubChem CID	67498
UNII	58GQ20G9W6 Y
CompTox Dashboard (EPA)	DTXSID00181565
InChI InChI=1S/C7H5NO/c1-2-4-7-6(3-1)5-9-8-7/h1-5H Key: FZKCAHQKNJXICB-UHFFFAOYSA-N
SMILES n1c2ccccc2co1
Properties
Chemical formula	C7H5NO
Molar mass	119.123 g·mol−1
Appearance	Colorless liquid
Density	1.183 g/mL[1]
Boiling point	101–102 °C (214–216 °F; 374–375 K)[1]
Hazards
GHS labelling:
Pictograms	[1]
Signal word	Warning
Hazard statements	H302[1]
Precautionary statements	P264, P270, P301+P312, P330, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references