1.0 2026-09-21 15:17:18 UTC 2026-09-21 15:17:18 UTC FDB116642 furanone 3H-furan-2-one C4H4O2 84.074 84.021129369 2,3-dihydrofuran-2-one 2(3H)-furanone O=C1CC=CO1 InChI=1S/C4H4O2/c5-4-2-1-3-6-4/h1,3H,2H2 RHDGNLCLDBVESU-UHFFFAOYSA-N belongs to the class of organic compounds known as butenolides. These are dihydrofurans with a carbonyl group at the C2 carbon atom. Butenolides Organic compounds Organoheterocyclic compounds Dihydrofurans Furanones Aliphatic heteromonocyclic compounds Carbonyl compounds Enol esters Hydrocarbon derivatives Lactones Monocarboxylic acids and derivatives Organic oxides Oxacyclic compounds 2-furanone Aliphatic heteromonocyclic compound Carbonyl group Carboxylic acid derivative Carboxylic acid ester Enol ester Hydrocarbon derivative Lactone Monocarboxylic acid or derivatives Organic oxide Organic oxygen compound Organooxygen compound Oxacycle butenolide logp 0.30 ALOGPS logs 0.32 ALOGPS solubility 1.76e+02 g/l ALOGPS logp 0.16 ChemAxon pka_strongest_acidic 16.22 ChemAxon pka_strongest_basic -7.2 ChemAxon iupac 2,3-dihydrofuran-2-one ChemAxon average_mass 84.074 ChemAxon mono_mass 84.021129369 ChemAxon smiles O=C1CC=CO1 ChemAxon formula C4H4O2 ChemAxon inchi InChI=1S/C4H4O2/c5-4-2-1-3-6-4/h1,3H,2H2 ChemAxon inchikey RHDGNLCLDBVESU-UHFFFAOYSA-N ChemAxon polar_surface_area 26.3 ChemAxon refractivity 20.4 ChemAxon polarizability 7.47 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 1 ChemAxon donor_count 0 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon Specdb::CMs 32976 Specdb::CMs 168843 Specdb::MsIr 10627 Specdb::MsIr 10628 Specdb::MsMs 432772 Specdb::MsMs 432773 Specdb::MsMs 432774 Specdb::MsMs 456811 Specdb::MsMs 456812 Specdb::MsMs 456813 Specdb::MsMs 2356662 Specdb::MsMs 2356663 Specdb::MsMs 2356664 Specdb::MsMs 2609756 Specdb::MsMs 2609757 Specdb::MsMs 2609758