benzoxazole

{{chembox

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 443417538

| Name = Benzoxazole

| ImageFile_Ref = {{chemboximage|correct|??}}

| ImageFile = 1,3-benzoxazole numbering.svg

| ImageSize = 160

| ImageAlt = Skeletal formula with numbering convention

| ImageFile1 = Benzoxazole 2D aromatic full.svg

| ImageSize1 = 160

| ImageAlt1 = Full structural formula with aromatic bond

| ImageFileL2 = Benzoxazole 3D ball inverted.png

| ImageSizeL2 = 140

| ImageAltL2 = Ball-and-stick molecular model

| ImageFileR2 = Benzoxazole 3D spacefill inverted.png

| ImageSizeR2 = 130

| ImageAltR2 = Space-filling molecular model

| PIN = 1,3-Benzoxazole

| OtherNames = 1-Oxa-3-aza-1H-indene

|Section1={{Chembox Identifiers

| ChEBI_Ref = {{ebicite|correct|EBI}}

| ChEBI = 38814

| SMILES = n1c2ccccc2oc1

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| ChemSpiderID = 8873

| InChI = 1/C7H5NO/c1-2-4-7-6(3-1)8-5-9-7/h1-5H

| InChIKey = BCMCBBGGLRIHSE-UHFFFAOYAP

| ChEMBL_Ref = {{ebicite|correct|EBI}}

| ChEMBL = 451894

| StdInChI_Ref = {{stdinchicite|correct|chemspider}}

| StdInChI = 1S/C7H5NO/c1-2-4-7-6(3-1)8-5-9-7/h1-5H

| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}

| StdInChIKey = BCMCBBGGLRIHSE-UHFFFAOYSA-N

| CASNo_Ref = {{cascite|correct|CAS}}

| CASNo = 273-53-0

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = J233Y1I55I

| PubChem = 9228

| RTECS =

}}

|Section2={{Chembox Properties

|C=7|H=5|N=1|O=1

| Appearance = White to light yellow solid

| Density =

| Solubility = Insoluble

| MeltingPtC = 27 to 30

| BoilingPtC = 182

}}

|Section7={{Chembox Hazards

| ExternalSDS =

| MainHazards =

| FlashPtC = 58

}}

|Section8={{Chembox Related

| OtherCompounds = oxazole
indole
benzofuran

}}

}}

Benzoxazole is an aromatic organic compound with a molecular formula C₇H₅NO, a benzene-fused oxazole ring structure, and an odor similar to pyridine.{{Katritzky2nd}}{{cite book |last1=Clayden |first1=J. |last2=Greeves |first2=N. |last3=Warren |first3=S. |last4=Wothers |first4=P. |title=Organic Chemistry |publisher=Oxford University Press |location=Oxford, Oxfordshire |year=2001 |isbn=0-19-850346-6 |url=https://archive.org/details/organicchemistry00clay_0 |url-access=registration }} Although benzoxazole itself is of little practical value, many derivatives of benzoxazoles are commercially important.

Being a heterocyclic compound, benzoxazole finds use in research as a starting material for the synthesis of larger, usually bioactive structures. Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.