Record Information
Creation date2010-04-08 22:05:22 UTC
Update date2019-11-26 02:57:25 UTC
Primary IDFDB002422
Secondary Accession NumbersNot Available
Chemical Information
FooDB NameEupafolin
DescriptionEupafolin, also known as 6-methoxy 5 or 73'4'-tetrahydroxyflavone, is a member of the class of compounds known as 6-o-methylated flavonoids. 6-o-methylated flavonoids are flavonoids with methoxy groups attached to the C6 atom of the flavonoid backbone. Thus, eupafolin is considered to be a flavonoid lipid molecule. Eupafolin is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Eupafolin can be found in common sage, lemon verbena, rosemary, and sesame, which makes eupafolin a potential biomarker for the consumption of these food products.
CAS Number520-11-6
6-Methoxy 5ChEMBL
2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-6-methoxy-4H-1-benzopyran-4-one, 9CIdb_source
Predicted Properties
Water Solubility0.12 g/LALOGPS
pKa (Strongest Acidic)7.09ChemAxon
pKa (Strongest Basic)-4.8ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count7ChemAxon
Hydrogen Donor Count4ChemAxon
Polar Surface Area116.45 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity81.36 m³·mol⁻¹ChemAxon
Polarizability30.8 ųChemAxon
Number of Rings3ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Chemical FormulaC16H12O7
IUPAC name2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-6-methoxy-4H-chromen-4-one
InChI IdentifierInChI=1S/C16H12O7/c1-22-16-11(20)6-13-14(15(16)21)10(19)5-12(23-13)7-2-3-8(17)9(18)4-7/h2-6,17-18,20-21H,1H3
Isomeric SMILESCOC1=C(O)C2=C(OC(=CC2=O)C2=CC(O)=C(O)C=C2)C=C1O
Average Molecular Weight316.2623
Monoisotopic Molecular Weight316.058302738
Description Belongs to the class of organic compounds known as 6-o-methylated flavonoids. These are flavonoids with methoxy groups attached to the C6 atom of the flavonoid backbone.
KingdomOrganic compounds
Super ClassPhenylpropanoids and polyketides
Sub ClassO-methylated flavonoids
Direct Parent6-O-methylated flavonoids
Alternative Parents
  • 6-methoxyflavonoid-skeleton
  • 7-hydroxyflavonoid
  • 3'-hydroxyflavonoid
  • 4'-hydroxyflavonoid
  • 5-hydroxyflavonoid
  • Flavone
  • Hydroxyflavonoid
  • Chromone
  • Benzopyran
  • 1-benzopyran
  • Anisole
  • Catechol
  • Alkyl aryl ether
  • 1-hydroxy-4-unsubstituted benzenoid
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • Pyranone
  • Benzenoid
  • Pyran
  • Monocyclic benzene moiety
  • Vinylogous acid
  • Heteroaromatic compound
  • Ether
  • Organoheterocyclic compound
  • Oxacycle
  • Organic oxygen compound
  • Organooxygen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
OntologyNo ontology term
Physico-Chemical Properties - Experimental
Physico-Chemical Properties - Experimental
Physical stateNot Available
Physical DescriptionNot Available
Mass CompositionC 60.76%; H 3.82%; O 35.41%DFC
Melting PointNot Available
Boiling PointNot Available
Experimental Water SolubilityNot Available
Experimental logPNot Available
Experimental pKaNot Available
Isoelectric pointNot Available
ChargeNot Available
Optical RotationNot Available
Spectroscopic UV DataNot Available
DensityNot Available
Refractive IndexNot Available
TypeDescriptionSplash KeyView
Predicted GC-MSEupafolin, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positivesplash10-00ks-0593000000-d04df03ef923f105cbb2Spectrum
TypeDescriptionSplash KeyView
MS/MSLC-MS/MS Spectrum - ESI-TOF 40V, Negativesplash10-0ug0-0792000000-b0493b07c4cff8abe96d2017-08-14View Spectrum
MS/MSLC-MS/MS Spectrum - ESI-TOF 20V, Negativesplash10-0ug0-0792000000-b0493b07c4cff8abe96d2017-08-14View Spectrum
MS/MSLC-MS/MS Spectrum - ESI-TOF 10V, Negativesplash10-0ug0-0792000000-b0493b07c4cff8abe96d2017-08-14View Spectrum
MS/MSLC-MS/MS Spectrum - ESI-TOF 50V, Negativesplash10-001r-0940000000-5baa8bd5a625567f08dd2017-08-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QFT 22V, positivesplash10-0udi-0009000000-f37db28495a264cf95032020-07-24View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-IT 22V, positivesplash10-0udi-0009000000-6cb654a8d44da14a1c4b2020-07-24View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-014i-0029000000-48a42a678280a96feb082016-08-03View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-014i-0169000000-c3695b331b8399faf0522016-08-03View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0a4m-3960000000-b179e1b189656ec5854b2016-08-03View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0009000000-d1eea835c668351963772016-08-03View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-014i-0169000000-5a4afa1d2dc63c754c002016-08-03View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-00di-5950000000-10104b78aa48595ecdf72016-08-03View Spectrum
NMRNot Available
ChemSpider IDNot Available
ChEMBL IDNot Available
KEGG Compound IDNot Available
Pubchem Compound IDNot Available
Pubchem Substance IDNot Available
ChEBI IDNot Available
Phenol-Explorer ID274
DrugBank IDNot Available
HMDB IDNot Available
CRC / DFC (Dictionary of Food Compounds) IDCLS09-N:CLS09-N
EAFUS IDNot Available
BIGG IDNot Available
KNApSAcK IDC00003885
HET IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
Flavornet IDNot Available
GoodScent IDNot Available
SuperScent IDNot Available
Wikipedia IDNot Available
Phenol-Explorer Metabolite IDNot Available
Duplicate IDSNot Available
Old DFC IDSNot Available
Associated Foods
FoodContent Range AverageReference
Biological Effects and Interactions
Health Effects / Bioactivities
aldose reductase inhibitor48550 An EC 1.1.1.* (oxidoreductase acting on donor CH-OH group, NAD(+) or NADP(+) acceptor) inhibitor that interferes with the action of aldehyde reductase (EC
anti cataract52217 Any substance introduced into a living organism with therapeutic or diagnostic purpose.DUKE
antitumor35610 A substance that inhibits or prevents the proliferation of neoplasms.DUKE
xanthine oxidase inhibitor35634 An EC 1.17.3.* (oxidoreductase acting on CH or CH2 with oxygen as acceptor) inhibitor that interferes with the action of xanthine oxidase (EC
EnzymesNot Available
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
FlavoursNot Available
MSDSNot Available
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference— Rothwell JA, Pérez-Jiménez J, Neveu V, Medina-Ramon A, M'Hiri N, Garcia Lobato P, Manach C, Knox K, Eisner R, Wishart D, Scalbert A. (2013) Phenol-Explorer 3.0: a major update of the Phenol-Explorer database to incorporate data on the effects of food processing on polyphenol content. Database, 10.1093/database/bat070.
— Duke, James. 'Dr. Duke's Phytochemical and Ethnobotanical Databases. United States Department of Agriculture.' Agricultural Research Service, Accessed April 27 (2004).
— Shinbo, Y., et al. 'KNApSAcK: a comprehensive species-metabolite relationship database.' Plant Metabolomics. Springer Berlin Heidelberg, 2006. 165-181.