1.0 2016-06-03 10:58:09 UTC 2026-08-19 23:32:47 UTC usnic acid SmallMolecule Usnic acid is a compound with the formula C18H16O7 and an average molecular weight of 344.32 g/mol. It is used as an industrial biocide and a biological antioxidant (PMC10646315, PMC9495557). In terms of its chemical categorization, usnic acid belongs to the acetophenones, a subclass of benzene and substituted derivatives within the organic compounds. The compound is found in or released from 13 recorded sources. Within the category of electrical and electronic equipment, it is associated with antennas, amplifiers, electric switches, electrically stimulated smoking devices, conductors or conductive bodies characterised by the conductive materials, and three additional sources. In the realm of household cleaning and consumer products, usnic acid is found in soap detergents, bleaching agents, perfumes within detergents and soaps, and cigar cigarettes. Additionally, it is utilized in food, food processing and cookware for food preservation. Insecticide C18H16O7 344.3154 344.089602866 4,10-diacetyl-11,13-dihydroxy-2,12-dimethyl-8-oxatricyclo[7.4.0.0²,⁷]trideca-1(9),6,10,12-tetraene-3,5-dione 7-hydroxy-(S)-usnate 125-46-2 CC(=O)C1C(=O)C=C2OC3=C(C(O)=C(C)C(O)=C3C(C)=O)C2(C)C1=O InChI=1S/C18H16O7/c1-6-14(22)12(8(3)20)16-13(15(6)23)18(4)10(25-16)5-9(21)11(7(2)19)17(18)24/h5,11,22-23H,1-4H3 CUCUKLJLRRAKFN-UHFFFAOYSA-N Organic compounds Benzenoids Benzene and substituted derivatives Acetophenones Acetophenones Aryl alkyl ketones Beta-diketones Coumarans Cyclohexenones Hydrocarbon derivatives Organic oxides Oxacyclic compounds Vinylogous acids Vinylogous esters 1,3-dicarbonyl compound 1,3-diketone Acetophenone Aromatic heteropolycyclic compound Aryl alkyl ketone Aryl ketone Carbonyl group Coumaran Cyclic ketone Cyclohexenone Hydrocarbon derivative Ketone Organic oxide Organic oxygen compound Organoheterocyclic compound Organooxygen compound Oxacycle Vinylogous acid Vinylogous ester Aromatic heteropolycyclic compounds benzofurans Detected and Not Quantified logp 1.4 logp 2.77 ALOGPS logs -2.95 ALOGPS solubility 3.86e-01 g/l ALOGPS logp 2.39 ChemAxon pka_strongest_acidic 3.64 ChemAxon pka_strongest_basic -4 ChemAxon iupac 4,10-diacetyl-11,13-dihydroxy-2,12-dimethyl-8-oxatricyclo[7.4.0.0²,⁷]trideca-1(9),6,10,12-tetraene-3,5-dione ChemAxon average_mass 344.3154 ChemAxon mono_mass 344.089602866 ChemAxon smiles CC(=O)C1C(=O)C=C2OC3=C(C(O)=C(C)C(O)=C3C(C)=O)C2(C)C1=O ChemAxon formula C18H16O7 ChemAxon inchi InChI=1S/C18H16O7/c1-6-14(22)12(8(3)20)16-13(15(6)23)18(4)10(25-16)5-9(21)11(7(2)19)17(18)24/h5,11,22-23H,1-4H3 ChemAxon inchikey CUCUKLJLRRAKFN-UHFFFAOYSA-N ChemAxon polar_surface_area 117.97 ChemAxon refractivity 88.55 ChemAxon polarizability 33.93 ChemAxon rotatable_bond_count 2 ChemAxon acceptor_count 7 ChemAxon donor_count 2 ChemAxon physiological_charge -1 ChemAxon formal_charge 0 ChemAxon #<HealthEffect::ActiveRecord_Associations_CollectionProxy:0x00007f72674adc20> 5646 5444