Isoxazoline

Isoxazoline
	2-isoxazoline
	3-isoxazoline
	4-isoxazoline
Names
	Systematic IUPAC name Respective to images:; 4,5-Dihydroisoxazole; 2,5-Dihydroisoxazole; 2,3-Dihydroisoxazole
	Other names Respective to images:; Δ2-isoxazoline; Δ3-isoxazoline; Δ4-isoxazoline
Identifiers
CAS Number	2-isoxazoline: 504-73-4; 3-isoxazoline: 214059-36-6; 4-isoxazoline: 6569-19-3;
3D model (JSmol)	2-isoxazoline: Interactive image; 3-isoxazoline: Interactive image; 4-isoxazoline: Interactive image;
ChEBI	CHEBI:87553;
ChemSpider	2-isoxazoline: 10609312; 4-isoxazoline: 10609256;
PubChem CID	2-isoxazoline: 12304501; 3-isoxazoline: 21865306; 4-isoxazoline: 19350417;
CompTox Dashboard (EPA)	2-isoxazoline: DTXSID90486713; 4-isoxazoline: DTXSID60598271;
	InChI 2-isoxazoline: InChI=1S/C3H5NO/c1-2-4-5-3-1/h2H,1,3H2 Key: WEQPBCSPRXFQQS-UHFFFAOYSA-N; 3-isoxazoline: InChI=1S/C3H5NO/c1-2-4-5-3-1/h1-2,4H,3H2 Key: OFJBYLCQNJHFMI-UHFFFAOYSA-N; 4-isoxazoline: InChI=1S/C3H5NO/c1-2-4-5-3-1/h1,3-4H,2H2 Key: FJRPOHLDJUJARI-UHFFFAOYSA-N;
	SMILES 2-isoxazoline: C1CON=C1; 3-isoxazoline: C1CONC=1; 4-isoxazoline: C1=CONC1;
Properties
Chemical formula	C3H5NO
Molar mass	71.079 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

Isoxazoline is a five-membered heterocyclic chemical compound, containing one atom each of oxygen and nitrogen which are located adjacent to one another. The ring was named in-line with the Hantzsch–Widman nomenclature. Isoxazolines are structural isomers of the more common oxazolines and exist in three different isomers depending on the location of the double bond. The relatively weak N-O bond makes isoxazolines prone to ring-opening and rearrangement reactions.