2-フラノン

Also known as alpha,beta-crotonolactone, 2-oxo-2,5-dihydrofuran, 4-hydroxy-2-butenoic acid lactone, 2-butenolide, 2-buten-4-olide, gamma-crotonolactone, gamma-hydroxycrotonic acid lactone, butenolide

2-Furanone is a heterocyclic organic 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.