1.0 2010-04-08 22:05:44 UTC 2025-11-18 22:49:53 UTC FDB003283 Crotonic acid Food flavour component Crotonic acid, or trans-2-butenoic acid, is a short-chain unsaturated carboxylic acid, described by the formula CH3CH=CHCO2H. (2E)-2-Butenoic acid (2E)-but-2-enoic acid (E)-2-Butenoic acid (E)-but-2-enoic acid (e)-crotonic acid 2-Butenoic acid, (2E)- 2-Butenoic acid, (E)- 2-Butenoic acid, (E)- (9CI) Alpha-crotonic acid b-Methacrylic acid Beta-methacrylic acid Beta-methylacrylic acid Crotonic acid Crotonic acid, (e)- FEMA 3908 trans-2-Butenoic acid Trans-crotonic acid C4H6O2 86.0892 86.036779436 (2E)-but-2-enoic acid butenoic acid 107-93-7 C\C=C\C(O)=O InChI=1S/C4H6O2/c1-2-3-4(5)6/h2-3H,1H3,(H,5,6)/b3-2+ LDHQCZJRKDOVOX-NSCUHMNNSA-N belongs to the class of organic compounds known as straight chain fatty acids. These are fatty acids with a straight aliphatic chain. Straight chain fatty acids Organic compounds Lipids and lipid-like molecules Fatty Acyls Fatty acids and conjugates Aliphatic acyclic compounds Carbonyl compounds Carboxylic acids Hydrocarbon derivatives Monocarboxylic acids and derivatives Organic oxides Unsaturated fatty acids Aliphatic acyclic compound Carbonyl group Carboxylic acid Carboxylic acid derivative Hydrocarbon derivative Monocarboxylic acid or derivatives Organic oxide Organic oxygen compound Organooxygen compound Straight chain fatty acid Unsaturated fatty acid 2-butenoic acid Unsaturated fatty acids logp 0.94 ALOGPS logs 0.07 ALOGPS solubility 1.01e+02 g/l ALOGPS melting_point Mp 71.4° logp 0.92 ChemAxon pka_strongest_acidic 4.9 ChemAxon iupac (2E)-but-2-enoic acid ChemAxon average_mass 86.0892 ChemAxon mono_mass 86.036779436 ChemAxon smiles C\C=C\C(O)=O ChemAxon formula C4H6O2 ChemAxon inchi InChI=1S/C4H6O2/c1-2-3-4(5)6/h2-3H,1H3,(H,5,6)/b3-2+ ChemAxon inchikey LDHQCZJRKDOVOX-NSCUHMNNSA-N ChemAxon polar_surface_area 37.3 ChemAxon refractivity 22.96 ChemAxon polarizability 8.44 ChemAxon rotatable_bond_count 1 ChemAxon acceptor_count 2 ChemAxon donor_count 1 ChemAxon physiological_charge -1 ChemAxon formal_charge 0 ChemAxon Specdb::MsIr 2474 Specdb::MsIr 2475 Specdb::MsIr 2476 Specdb::CMs 2879 Specdb::CMs 29452 Specdb::CMs 39528 Specdb::CMs 99950 Specdb::CMs 158315 Specdb::NmrOneD 4601 Specdb::NmrOneD 266168 Specdb::NmrOneD 266169 Specdb::NmrOneD 266170 Specdb::NmrOneD 266171 Specdb::NmrOneD 266172 Specdb::NmrOneD 266173 Specdb::NmrOneD 266174 Specdb::NmrOneD 266175 Specdb::NmrOneD 266176 Specdb::NmrOneD 266177 Specdb::NmrOneD 266178 Specdb::NmrOneD 266179 Specdb::NmrOneD 266180 Specdb::NmrOneD 266181 Specdb::NmrOneD 266182 Specdb::NmrOneD 266183 Specdb::NmrOneD 266184 Specdb::NmrOneD 266185 Specdb::NmrOneD 266186 Specdb::NmrOneD 266187 Specdb::MsMs 88608 Specdb::MsMs 88609 Specdb::MsMs 88610 Specdb::MsMs 151368 Specdb::MsMs 151369 Specdb::MsMs 151370 Specdb::MsMs 437461 Specdb::MsMs 437462 Specdb::MsMs 437463 Specdb::MsMs 437464 Specdb::MsMs 2252371 Specdb::MsMs 2254446 Specdb::MsMs 2256110 Specdb::MsMs 2453008 Specdb::MsMs 2453009 Specdb::MsMs 2453010 Specdb::MsMs 2482714 Specdb::MsMs 2482715 Specdb::MsMs 2482716 HMDB0010720 milky