Record Information
Creation date2010-04-08 22:05:28 UTC
Update date2019-11-26 02:57:48 UTC
Primary IDFDB002675
Secondary Accession NumbersNot Available
Chemical Information
FooDB NameTambulin
DescriptionTambulin, also known as herbacetin 7,8,4'-trimethyl ether, 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, tambulin is considered to be a flavonoid lipid molecule. Tambulin is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Tambulin can be found in sunflower, which makes tambulin a potential biomarker for the consumption of this food product.
CAS Number571-72-2
Herbacetin 7,8,4'-trimethyl etherChEBI
3,5-Dihydroxy-7,8-dimethoxy-2-(4-methoxyphenyl) chromen-4-oneMeSH
Predicted Properties
Water Solubility0.052 g/LALOGPS
pKa (Strongest Acidic)8.5ChemAxon
pKa (Strongest Basic)-3.9ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count7ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area94.45 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity90.31 m³·mol⁻¹ChemAxon
Polarizability34.61 ųChemAxon
Number of Rings3ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Chemical FormulaC18H16O7
IUPAC name3,5-dihydroxy-7,8-dimethoxy-2-(4-methoxyphenyl)-4H-chromen-4-one
InChI IdentifierInChI=1S/C18H16O7/c1-22-10-6-4-9(5-7-10)16-15(21)14(20)13-11(19)8-12(23-2)17(24-3)18(13)25-16/h4-8,19,21H,1-3H3
Isomeric SMILESCOC1=CC=C(C=C1)C1=C(O)C(=O)C2=C(O1)C(OC)=C(OC)C=C2O
Average Molecular Weight344.3154
Monoisotopic Molecular Weight344.089602866
Description 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.
KingdomOrganic compounds
Super ClassPhenylpropanoids and polyketides
Sub ClassFlavones
Direct ParentFlavonols
Alternative Parents
  • 4p-methoxyflavonoid-skeleton
  • 7-methoxyflavonoid-skeleton
  • 8-methoxyflavonoid-skeleton
  • 3-hydroxyflavone
  • 3-hydroxyflavonoid
  • 5-hydroxyflavonoid
  • Hydroxyflavonoid
  • Chromone
  • Benzopyran
  • 1-benzopyran
  • Phenoxy compound
  • Anisole
  • Methoxybenzene
  • Phenol ether
  • 1-hydroxy-2-unsubstituted benzenoid
  • Alkyl aryl ether
  • Pyranone
  • Monocyclic benzene moiety
  • Pyran
  • Benzenoid
  • Heteroaromatic compound
  • Vinylogous acid
  • Organoheterocyclic compound
  • Ether
  • Oxacycle
  • Organic oxide
  • Organooxygen compound
  • Organic oxygen compound
  • Hydrocarbon derivative
  • 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 62.79%; H 4.68%; O 32.53%DFC
Melting PointMp 205°DFC
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
EI-MS/GC-MSNot Available
TypeDescriptionSplash KeyView
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0002-0009000000-518951ba59a298b30bfdSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0002-0009000000-af9d7e827f3a1b6d23a2Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-000b-0982000000-95a517421d3b10627983Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0006-0009000000-5dda734a522e53e8ddf4Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0006-0019000000-937bee76e1c08fc19af3Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0092-2893000000-e983f3412bbbc2abcdd2Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0002-0009000000-5dc8eb0c39637af07086Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0002-0009000000-89d4b94a278c640b6090Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0002-2915000000-b1a2c5dafedadc655cf5Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0006-0009000000-b37ac2e3c620790fe1aaSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0007-0339000000-68c0d2b1899fb5c895a1Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-05mk-1921000000-5b28a06866866873394fSpectrum
NMRNot Available
ChemSpider IDNot Available
ChEMBL IDNot Available
KEGG Compound IDC10189
Pubchem Compound ID5281700
Pubchem Substance IDNot Available
ChEBI IDNot Available
Phenol-Explorer IDNot Available
DrugBank IDNot Available
HMDB IDNot Available
CRC / DFC (Dictionary of Food Compounds) IDCMZ96-B:CNB02-N
EAFUS IDNot Available
Dr. Duke IDNot Available
BIGG IDNot Available
KNApSAcK IDC00001104
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 / BioactivitiesNot Available
EnzymesNot Available
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
FlavoursNot Available
MSDSNot Available
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference— Shinbo, Y., et al. 'KNApSAcK: a comprehensive species-metabolite relationship database.' Plant Metabolomics. Springer Berlin Heidelberg, 2006. 165-181.