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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 09:10:46 UTC
Update Date2021-09-26 23:03:51 UTC
HMDB IDHMDB0251692
Secondary Accession NumbersNone
Metabolite Identification
Common NameEckol
Descriptioneckol belongs to the class of organic compounds known as tannins. These are naturally occurring polyphenols which be categorized into four main classes: hydrolyzable tannin (based on ellagic acid or gallic acid), condensed tannins (made of oligomeric or polymeric proanthocyanidins), complex tannins (made of a catechin bound to a gallotannin or elagitannin), and phlorotannins (oligomers of phloroglucinol). eckol is a secondary metabolite. Secondary metabolites are metabolically or physiologically non-essential metabolites that may serve a role as defense or signalling molecules. In some cases they are simply molecules that arise from the incomplete metabolism of other secondary metabolites. Based on a literature review a significant number of articles have been published on eckol. This compound has been identified in human blood as reported by (PMID: 31557052 ). Eckol is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Eckol is part of the human exposome. The exposome can be defined as the collection of all the exposures of an individual in a lifetime and how those exposures relate to health. An individual's exposure begins before birth and includes insults from environmental and occupational sources.
Structure
Thumb
Synonyms
ValueSource
1-(3,5-Dihydroxyphenoxy)-2,4,7,9-tetrahydroxydibenzo-1,4-dioxinChEBI
4-(3,5-Dihydroxyphenoxy)-dibenzo(b,e)(1,4)dioxin-1,3,6,8-tetrolChEBI
4-(3,5-Dihydroxyphenoxy)dibenzo-p-dioxin-1,3,6,8-tetrolChEBI
Chemical FormulaC18H12O9
Average Molecular Weight372.285
Monoisotopic Molecular Weight372.048131966
IUPAC Name4-(3,5-dihydroxyphenoxy)oxanthrene-1,3,6,8-tetrol
Traditional Nameeckol
CAS Registry NumberNot Available
SMILES
OC1=CC(OC2=C(O)C=C(O)C3=C2OC2=C(O)C=C(O)C=C2O3)=CC(O)=C1
InChI Identifier
InChI=1S/C18H12O9/c19-7-1-8(20)3-10(2-7)25-16-12(23)6-13(24)17-18(16)27-15-11(22)4-9(21)5-14(15)26-17/h1-6,19-24H
InChI KeyPCZZRBGISTUIOA-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as tannins. These are naturally occurring polyphenols which be categorized into four main classes: Hydrolyzable tannin (based on ellagic acid or gallic acid), condensed tannins (made of oligomeric or polymeric proanthocyanidins), complex tannins (made of a catechin bound to a gallotannin or elagitannin), and phlorotannins (oligomers of phloroglucinol).
KingdomOrganic compounds
Super ClassPhenylpropanoids and polyketides
ClassTannins
Sub ClassNot Available
Direct ParentTannins
Alternative Parents
Substituents
  • Tannin
  • Dibenzo-p-dioxin
  • Diaryl ether
  • Phenoxy compound
  • Phenol ether
  • Resorcinol
  • 1-hydroxy-4-unsubstituted benzenoid
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • Monocyclic benzene moiety
  • Benzenoid
  • Oxacycle
  • Ether
  • Organoheterocyclic compound
  • Polyol
  • Organic oxygen compound
  • Organooxygen compound
  • Hydrocarbon derivative
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Not AvailableNot Available
Physical Properties
StateNot Available
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
logP2.71ALOGPS
logP2.68ChemAxon
logS-3.4ALOGPS
pKa (Strongest Acidic)7.7ChemAxon
pKa (Strongest Basic)-3.5ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count6ChemAxon
Hydrogen Donor Count6ChemAxon
Polar Surface Area149.07 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity90.61 m³·mol⁻¹ChemAxon
Polarizability34.38 ųChemAxon
Number of Rings4ChemAxon
BioavailabilityYesChemAxon
Rule of FiveNoChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+186.91930932474
DeepCCS[M-H]-184.56130932474
DeepCCS[M-2H]-218.57330932474
DeepCCS[M+Na]+193.80130932474
AllCCS[M+H]+182.132859911
AllCCS[M+H-H2O]+179.432859911
AllCCS[M+NH4]+184.532859911
AllCCS[M+Na]+185.232859911
AllCCS[M-H]-176.132859911
AllCCS[M+Na-2H]-174.732859911
AllCCS[M+HCOO]-173.332859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
EckolOC1=CC(OC2=C(O)C=C(O)C3=C2OC2=C(O)C=C(O)C=C2O3)=CC(O)=C16160.0Standard polar33892256
EckolOC1=CC(OC2=C(O)C=C(O)C3=C2OC2=C(O)C=C(O)C=C2O3)=CC(O)=C13633.3Standard non polar33892256
EckolOC1=CC(OC2=C(O)C=C(O)C3=C2OC2=C(O)C=C(O)C=C2O3)=CC(O)=C13889.3Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (Non-derivatized) - 70eV, Positivesplash10-0ukc-0139000000-0057b5af72f96997ad532021-09-24Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_1_1) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_1_2) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_1_3) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_1_4) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_1_5) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_2_1) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_2_2) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_2_3) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_2_4) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_2_5) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_2_6) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_2_7) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_2_8) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_2_9) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_2_10) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_2_11) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_3_1) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_3_2) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_3_3) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_3_4) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_3_5) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_3_6) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eckol GC-MS (TMS_3_7) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Eckol 10V, Positive-QTOFsplash10-00di-0009000000-d5928f43b8885204aace2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Eckol 20V, Positive-QTOFsplash10-00di-0009000000-61a24f98f0f1bac645c72021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Eckol 40V, Positive-QTOFsplash10-000i-0198000000-b25d1495525d059b884c2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Eckol 10V, Negative-QTOFsplash10-00di-0009000000-49ee8f671d7fe23db8d72021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Eckol 20V, Negative-QTOFsplash10-00di-0019000000-5a09a63f1c06a5f7543f2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Eckol 40V, Negative-QTOFsplash10-002u-8495000000-6a4497c83923f5d57c862021-10-12Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDC00031757
Chemspider ID128740
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkEckol
METLIN IDNot Available
PubChem Compound145937
PDB IDNot Available
ChEBI ID65819
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Barupal DK, Fiehn O: Generating the Blood Exposome Database Using a Comprehensive Text Mining and Database Fusion Approach. Environ Health Perspect. 2019 Sep;127(9):97008. doi: 10.1289/EHP4713. Epub 2019 Sep 26. [PubMed:31557052 ]