Parasorbic acid

Parasorbic acid
Names
	IUPAC name (6S)-5,6-dihydro-6-methyl-2H-pyran-2-one
	Other names 2-methyl-2,3-dihydropyran-6-one, 2-Hexen-5-olide, 5-hydroxy-2-Hexenoic acid δ-lactone, parasorbic acid, sorbic oil, γ-Hexenolactone, (+)-(6S)-Parasorbic acid
Identifiers
CAS Number	10048-32-5;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:7926;
ChEMBL	ChEMBL2252704;
ChemSpider	23250;
DrugBank	DB14121;
KEGG	C08502;
PubChem CID	441575;
UNII	DCN48OUK3T;
CompTox Dashboard (EPA)	DTXSID50871944 ;
	InChI InChI=1S/C6H8O2/c1-5-3-2-4-6(7)8-5/h2,4-5H,3H2,1H3 Key: DYNKRGCMLGUEMN-UHFFFAOYSA-N;
	SMILES CC1OC(C=CC1)=O;
Properties
Chemical formula	C6H8O2
Molar mass	112.128
Appearance	colorless liquid
Density	1.0 g/mL (estimated)
Boiling point	227 °C (441 °F; 500 K) estimated
Solubility in water	50 g/L
Solubility	estimated
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	-360.03 kJ·mol−1
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
NFPA 704 (fire diamond)	2 2 0
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Parasorbic acid is the cyclic lactone of sorbic acid. Thermal treatment or hydrolysis converts the lactone to sorbic acid.