1.0 2010-04-08 22:06:03 UTC 2025-11-18 22:54:45 UTC FDB004028 Eicosanic acid Arachidic acid, also known as eicosanoic acid or eicosanoate, is a member of the class of compounds known as long-chain fatty acids. Long-chain fatty acids are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms. Thus, arachidic acid is considered to be a fatty acid lipid molecule. Arachidic acid is practically insoluble (in water) and a weakly acidic compound (based on its pKa). Arachidic acid can be found in a number of food items such as chinese cinnamon, strawberry, winged bean, and thistle, which makes arachidic acid a potential biomarker for the consumption of these food products. Arachidic acid can be found primarily in blood and feces. Moreover, arachidic acid is found to be associated with schizophrenia. C20H40O2 312.5304 312.302830524 icosanoic acid arachidic acid 506-30-9 CCCCCCCCCCCCCCCCCCCC(O)=O InChI=1S/C20H40O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20(21)22/h2-19H2,1H3,(H,21,22) VKOBVWXKNCXXDE-UHFFFAOYSA-N belongs to the class of organic compounds known as long-chain fatty acids. These are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms. Long-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 Straight chain fatty acids Aliphatic acyclic compound Carbonyl group Carboxylic acid Carboxylic acid derivative Hydrocarbon derivative Long-chain fatty acid Monocarboxylic acid or derivatives Organic oxide Organic oxygen compound Organooxygen compound Straight chain fatty acid Saturated fatty acids Straight chain fatty acids Straight chain fatty acids long-chain fatty acid straight-chain saturated fatty acid logp 8.53 ALOGPS logs -6.80 ALOGPS solubility 4.96e-05 g/l ALOGPS logp 8.03 ChemAxon pka_strongest_acidic 4.95 ChemAxon iupac icosanoic acid ChemAxon average_mass 312.5304 ChemAxon mono_mass 312.302830524 ChemAxon smiles CCCCCCCCCCCCCCCCCCCC(O)=O ChemAxon formula C20H40O2 ChemAxon inchi InChI=1S/C20H40O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20(21)22/h2-19H2,1H3,(H,21,22) ChemAxon inchikey VKOBVWXKNCXXDE-UHFFFAOYSA-N ChemAxon polar_surface_area 37.3 ChemAxon refractivity 95.49 ChemAxon polarizability 42.91 ChemAxon rotatable_bond_count 18 ChemAxon acceptor_count 2 ChemAxon donor_count 1 ChemAxon physiological_charge -1 ChemAxon formal_charge 0 ChemAxon Specdb::NmrTwoD 1804 Specdb::EiMs 577 Specdb::CMs 810 Specdb::CMs 1971 Specdb::CMs 12519 Specdb::CMs 29794 Specdb::CMs 30575 Specdb::CMs 31402 Specdb::CMs 32066 Specdb::CMs 38320 Specdb::CMs 167854 Specdb::MsMs 2034 Specdb::MsMs 2035 Specdb::MsMs 2036 Specdb::MsMs 19853 Specdb::MsMs 19854 Specdb::MsMs 19855 Specdb::MsMs 21356 Specdb::MsMs 21357 Specdb::MsMs 21358 Specdb::MsMs 21404 Specdb::MsMs 21405 Specdb::MsMs 21406 Specdb::MsMs 22907 Specdb::MsMs 22908 Specdb::MsMs 22909 Specdb::MsMs 439522 Specdb::MsMs 439523 Specdb::MsMs 439524 Specdb::MsMs 439525 Specdb::MsMs 449579 Specdb::MsMs 449580 Specdb::MsMs 2238123 Specdb::MsMs 2239428 Specdb::MsMs 2240148 Specdb::MsMs 2241581 Specdb::NmrOneD 1865 Specdb::NmrOneD 2414 Specdb::NmrOneD 3104 Specdb::NmrOneD 269518 Specdb::NmrOneD 269519 Specdb::NmrOneD 269520 Specdb::NmrOneD 269521 Specdb::NmrOneD 269522 Specdb::NmrOneD 269523 Specdb::NmrOneD 269524 Specdb::NmrOneD 269525 Specdb::NmrOneD 269526 Specdb::NmrOneD 269527 Specdb::NmrOneD 269528 Specdb::NmrOneD 269529 Specdb::NmrOneD 269530 Specdb::NmrOneD 269531 Specdb::NmrOneD 269532 Specdb::NmrOneD 269533 Specdb::NmrOneD 269534 Specdb::NmrOneD 269535 Specdb::NmrOneD 269536 Specdb::NmrOneD 269537 HMDB0002212 Horseradish tree Type 1 specific Moringa oleifera 3735 Peanut Type 1 specific Arachis hypogaea 3818