Topic summary
2-Furanone

Furan-2(5H)-one
Furan-2-one, γ-crotonolactone, butenolide, 5H-furan-2-one
3D model (JSmol)
- 207-839-3
PubChemCID
CompTox Dashboard(EPA)
- InChI=1S/C4H4O2/c5-4-2-1-3-6-4/h1-2H,3H2Key: VIHAEDVKXSOUAT-UHFFFAOYSA-N
- InChI=1/C4H4O2/c5-4-2-1-3-6-4/h1-2H,3H2Key: VIHAEDVKXSOUAT-UHFFFAOYAD
- O=C\1OC/C=C/1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
2-Furanone is a heterocyclicorganic compound. It is also known as γ-crotonolactone (GCL), as it is formally the lactone derived from γ-hydroxyisocrotonic acid. The chemical is colloquially called "butenolide", and is the parent structure for the butenolide class of compounds. It is a colourless liquid.