1.0 2010-04-08 22:04:39 UTC 2025-11-18 22:20:29 UTC FDB000624 Fisetin 3,7,3',4'-tetrahydroxyflavone, also known as 5-desoxyquercetin or fisetinidin, is a member of the class of compounds known as flavonols. Flavonols are compounds that contain a flavone (2-phenyl-1-benzopyran-4-one) backbone carrying a hydroxyl group at the 3-position. Thus, 3,7,3',4'-tetrahydroxyflavone is considered to be a flavonoid lipid molecule. 3,7,3',4'-tetrahydroxyflavone is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). 3,7,3',4'-tetrahydroxyflavone is a bitter tasting compound found in soy bean, which makes 3,7,3',4'-tetrahydroxyflavone a potential biomarker for the consumption of this food product. 2-(3,4-Dihydroxyphenyl)-3,7-dihydroxy-4H-1-benzopyran-4-one, 9CI 3,3',4',7-Tetrahydroxyflavone 3',4',7-Trihydroxyflavonol 5-Desoxyquercetin 7,3',4'-Trihydroxyflavonol Fisetin C15H10O6 286.2363 286.047738052 2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-4H-chromen-4-one viset 528-48-3 OC1=CC2=C(C=C1)C(=O)C(O)=C(O2)C1=CC(O)=C(O)C=C1 InChI=1S/C15H10O6/c16-8-2-3-9-12(6-8)21-15(14(20)13(9)19)7-1-4-10(17)11(18)5-7/h1-6,16-18,20H XHEFDIBZLJXQHF-UHFFFAOYSA-N belongs to the class of organic compounds known as flavonols. Flavonols are compounds that contain a flavone (2-phenyl-1-benzopyran-4-one) backbone carrying a hydroxyl group at the 3-position. Flavonols Organic compounds Phenylpropanoids and polyketides Flavonoids Flavones Aromatic heteropolycyclic compounds 1-hydroxy-2-unsubstituted benzenoids 1-hydroxy-4-unsubstituted benzenoids 3'-hydroxyflavonoids 3-hydroxyflavonoids 4'-hydroxyflavonoids 7-hydroxyflavonoids Benzene and substituted derivatives Catechols Chromones Heteroaromatic compounds Hydrocarbon derivatives Organic oxides Organooxygen compounds Oxacyclic compounds Pyranones and derivatives 1-benzopyran 1-hydroxy-2-unsubstituted benzenoid 1-hydroxy-4-unsubstituted benzenoid 3'-hydroxyflavonoid 3-hydroxyflavone 3-hydroxyflavonoid 4'-hydroxyflavonoid 7-hydroxyflavonoid Aromatic heteropolycyclic compound Benzenoid Benzopyran Catechol Chromone Heteroaromatic compound Hydrocarbon derivative Hydroxyflavonoid Monocyclic benzene moiety Organic oxide Organic oxygen compound Organoheterocyclic compound Organooxygen compound Oxacycle Phenol Pyran Pyranone 3'-hydroxyflavonoid 7-hydroxyflavonol Flavones and Flavonols flavonols tetrahydroxyflavone logp 2.03 ALOGPS logs -3.28 ALOGPS solubility 1.51e-01 g/l ALOGPS logp 1.81 ChemAxon pka_strongest_acidic 6.32 ChemAxon pka_strongest_basic -3.9 ChemAxon iupac 2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-4H-chromen-4-one ChemAxon average_mass 286.2363 ChemAxon mono_mass 286.047738052 ChemAxon smiles OC1=CC2=C(C=C1)C(=O)C(O)=C(O2)C1=CC(O)=C(O)C=C1 ChemAxon formula C15H10O6 ChemAxon inchi InChI=1S/C15H10O6/c16-8-2-3-9-12(6-8)21-15(14(20)13(9)19)7-1-4-10(17)11(18)5-7/h1-6,16-18,20H ChemAxon inchikey XHEFDIBZLJXQHF-UHFFFAOYSA-N ChemAxon polar_surface_area 107.22 ChemAxon refractivity 74.88 ChemAxon polarizability 27.64 ChemAxon rotatable_bond_count 1 ChemAxon acceptor_count 6 ChemAxon donor_count 4 ChemAxon physiological_charge -1 ChemAxon formal_charge 0 ChemAxon Specdb::NmrOneD 3894 Specdb::NmrOneD 4168 Specdb::CMs 5879 Specdb::MsMs 74799 Specdb::MsMs 74800 Specdb::MsMs 74801 Specdb::MsMs 134286 Specdb::MsMs 134287 Specdb::MsMs 134288 Specdb::MsMs 285785 Specdb::MsMs 285786 Specdb::MsMs 285787 Specdb::MsMs 373784 Specdb::MsMs 373785 Specdb::MsMs 373786 Specdb::MsMs 436945 Specdb::MsMs 436946 Specdb::MsMs 436947 Specdb::MsMs 436948 Specdb::MsMs 436949 Specdb::MsMs 439412 Specdb::MsMs 439415 Specdb::MsMs 439918 Specdb::MsMs 439919 Specdb::MsMs 440280 Specdb::MsMs 440281 Specdb::MsMs 444944 Specdb::MsMs 444945 42567 Soy bean Type 1 specific Glycine max 3847 bitter 5-lipoxygenase inhibitor 10 A compound or agent that combines with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction. Allergenic 43 A chemical compound which causes the onset of an allergic reaction by interacting with any of the molecular pathways involved in an allergy. Angiotensin converting enzyme inhibitor 18 An EC 3.4.15.* (peptidyl-dipeptidase) inhibitor that interferes with the action of peptidyl-dipeptidase A (EC 3.4.15.1). Anti histaminic 331 Histamine antagonists are the drugs that bind to but do not activate histamine receptors, thereby blocking the actions of histamine or histamine agonists. Anti-mutagenic 451 Anti-oxidant 502 A substance that opposes oxidation or inhibits reactions brought about by dioxygen or peroxides. In European countries, E-numbers for permitted antioxidant food additives are from E 300 to E 324. Anti-viral 689 A substance that destroys or inhibits replication of viruses. Cyclooxygenase inhibitor 849 A compound or agent that combines with cyclooxygenases (EC 1.14.99.1) and thereby prevents its substrate-enzyme combination with arachidonic acid and the formation of icosanoids, prostaglandins, and thromboxanes. Iodothyronine-deiodinase inhibitor 1054 A compound or agent that combines with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction. Lipoxygenase inhibitor 1077 A compound or agent that combines with lipoxygenase and thereby prevents its substrate-enzyme combination with arachidonic acid and the formation of the icosanoid products hydroxyicosatetraenoic acid and various leukotrienes. Oxidase inhibitor 1184 A compound or agent that combines with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction. Pesticide 1210 Strictly, a substance intended to kill pests. In common usage, any substance used for controlling, preventing, or destroying animal, microbiological or plant pests. Topoisomerase-I inhibitor 1368 A topoisomerase inhibitor that inhibits the bacterial enzymes of the DNA topoisomerases, Type I class (EC 5.99.1.2) that catalyze ATP-independent breakage of one of the two strands of DNA, passage of the unbroken strand through the break, and rejoining of the broken strand. These bacterial enzymes reduce the topological stress in the DNA structure by relaxing negatively, but not positively, supercoiled DNA. Topoisomerase-II inhibitor 1366 A topoisomerase inhibitor that inhibits DNA topoisomerase (ATP-hydrolysing), EC 5.99.1.3 (topoisomerase II), which catalyses ATP-dependent breakage of both strands of DNA, passage of the unbroken strands through the breaks, and rejoining of the broken strands.