1.0 2010-04-08 22:06:04 UTC 2025-11-18 22:54:56 UTC FDB004069 Arctic acid Arctic acid, also known as arctate, is a member of the class of compounds known as bi- and oligothiophenes. Bi- and oligothiophenes are organic compounds containing two or more linked thiophene rings. Thiophene is a five-member aromatic ring with one sulfur and four carbon atoms. Arctic acid is practically insoluble (in water) and a weakly acidic compound (based on its pKa). Arctic acid can be found in burdock, which makes arctic acid a potential biomarker for the consumption of this food product. C12H8O2S2 248.321 247.99657088 5-[5-(prop-1-yn-1-yl)thiophen-2-yl]thiophene-2-carboxylic acid 5-[5-(prop-1-yn-1-yl)thiophen-2-yl]thiophene-2-carboxylic acid CC#CC1=CC=C(S1)C1=CC=C(S1)C(O)=O InChI=1S/C12H8O2S2/c1-2-3-8-4-5-9(15-8)10-6-7-11(16-10)12(13)14/h4-7H,1H3,(H,13,14) SJVJMFXCINSXFF-UHFFFAOYSA-N belongs to the class of organic compounds known as bi- and oligothiophenes. These are organic compounds containing two or more linked thiophene rings. Thiophene is a five-member aromatic ring with one sulfur and four carbon atoms. Bi- and oligothiophenes Organic compounds Organoheterocyclic compounds Bi- and oligothiophenes Aromatic heteromonocyclic compounds 2,5-disubstituted thiophenes Carboxylic acids Heteroaromatic compounds Hydrocarbon derivatives Monocarboxylic acids and derivatives Organic oxides Organooxygen compounds Thiophene carboxylic acids 2,5-disubstituted thiophene Aromatic heteromonocyclic compound Bithiophene Carboxylic acid Carboxylic acid derivative Heteroaromatic compound Hydrocarbon derivative Monocarboxylic acid or derivatives Organic oxide Organic oxygen compound Organooxygen compound Thiophene Thiophene carboxylic acid Thiophene carboxylic acid or derivatives logp 3.70 ALOGPS logs -4.23 ALOGPS solubility 1.45e-02 g/l ALOGPS logp 4.08 ChemAxon pka_strongest_acidic 3.33 ChemAxon pka_strongest_basic -9 ChemAxon iupac 5-[5-(prop-1-yn-1-yl)thiophen-2-yl]thiophene-2-carboxylic acid ChemAxon average_mass 248.321 ChemAxon mono_mass 247.99657088 ChemAxon smiles CC#CC1=CC=C(S1)C1=CC=C(S1)C(O)=O ChemAxon formula C12H8O2S2 ChemAxon inchi InChI=1S/C12H8O2S2/c1-2-3-8-4-5-9(15-8)10-6-7-11(16-10)12(13)14/h4-7H,1H3,(H,13,14) ChemAxon inchikey SJVJMFXCINSXFF-UHFFFAOYSA-N ChemAxon polar_surface_area 37.3 ChemAxon refractivity 62.47 ChemAxon polarizability 26.14 ChemAxon rotatable_bond_count 3 ChemAxon acceptor_count 2 ChemAxon donor_count 1 ChemAxon physiological_charge -1 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 61323 Specdb::MsMs 61324 Specdb::MsMs 61325 Specdb::MsMs 117834 Specdb::MsMs 117835 Specdb::MsMs 117836 Specdb::MsMs 3599864 Specdb::MsMs 3599865 Specdb::MsMs 3599866 Specdb::MsMs 3599867 Specdb::MsMs 3599868 Specdb::MsMs 3599869 Burdock Type 1 specific Arctium lappa 4217