Hmdb loader
Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 12:39:20 UTC
Update Date2021-09-26 23:07:15 UTC
HMDB IDHMDB0253797
Secondary Accession NumbersNone
Metabolite Identification
Common NameKhellin
Descriptionkhellin, also known as quelina, belongs to the class of organic compounds known as furanochromones. These are polycyclic aromatic compounds containing a furan ring fused to a 1-benzopyran-4-one ring system. Thus, khellin is considered to be an aromatic polyketide lipid molecule. khellin is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. This compound has been identified in human blood as reported by (PMID: 31557052 ). Khellin is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Khellin 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
4,9-Dimethoxy-7-methyl-5H-furo[3,2-g][1]benzopyran-5-oneChEBI
KhellineChEBI
KhellinumChEBI
QuelinaChEBI
KhelloydChEMBL
AmmivinChEMBL
VisamminMeSH
KhellinMeSH
Chemical FormulaC14H12O5
Average Molecular Weight260.245
Monoisotopic Molecular Weight260.068473486
IUPAC Name4,9-dimethoxy-7-methyl-5H-furo[3,2-g]chromen-5-one
Traditional Namekelamin
CAS Registry NumberNot Available
SMILES
COC1=C2OC=CC2=C(OC)C2=C1OC(C)=CC2=O
InChI Identifier
InChI=1S/C14H12O5/c1-7-6-9(15)10-11(16-2)8-4-5-18-12(8)14(17-3)13(10)19-7/h4-6H,1-3H3
InChI KeyHSMPDPBYAYSOBC-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as furanochromones. These are polycyclic aromatic compounds containing a furan ring fused to a 1-benzopyran-4-one ring system.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassBenzopyrans
Sub Class1-benzopyrans
Direct ParentFuranochromones
Alternative Parents
Substituents
  • Furanochromone
  • Benzofuran
  • Anisole
  • Alkyl aryl ether
  • Pyranone
  • Benzenoid
  • Pyran
  • Heteroaromatic compound
  • Vinylogous ester
  • Furan
  • Ether
  • Oxacycle
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Organooxygen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot 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
logP2.28ALOGPS
logP1.72ChemAxon
logS-3.2ALOGPS
pKa (Strongest Acidic)14.59ChemAxon
pKa (Strongest Basic)-2.8ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area57.9 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity68.87 m³·mol⁻¹ChemAxon
Polarizability26.05 ųChemAxon
Number of Rings3ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+154.85730932474
DeepCCS[M-H]-152.49930932474
DeepCCS[M-2H]-185.44530932474
DeepCCS[M+Na]+160.9530932474
AllCCS[M+H]+156.032859911
AllCCS[M+H-H2O]+152.032859911
AllCCS[M+NH4]+159.732859911
AllCCS[M+Na]+160.732859911
AllCCS[M-H]-160.532859911
AllCCS[M+Na-2H]-160.032859911
AllCCS[M+HCOO]-159.532859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
KhellinCOC1=C2OC=CC2=C(OC)C2=C1OC(C)=CC2=O3336.5Standard polar33892256
KhellinCOC1=C2OC=CC2=C(OC)C2=C1OC(C)=CC2=O2193.8Standard non polar33892256
KhellinCOC1=C2OC=CC2=C(OC)C2=C1OC(C)=CC2=O2262.0Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Khellin GC-MS (Non-derivatized) - 70eV, Positivesplash10-01qd-1190000000-530cbdc007fb33cf1fdb2021-09-23Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Khellin GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental LC-MS/MSLC-MS/MS Spectrum - Khellin 40V, Positive-QTOFsplash10-001i-0790000000-9d5881270e99ae57fba02021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Khellin 10V, Positive-QTOFsplash10-03di-0090000000-83293c8e9428c30a55e12021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Khellin 20V, Positive-QTOFsplash10-001i-0090000000-5f03f3c4e23d486b5add2021-09-20HMDB team, MONAView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Khellin 10V, Positive-QTOFsplash10-03di-0090000000-7aa1daa3fa40b9bd59742016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Khellin 20V, Positive-QTOFsplash10-03di-0090000000-ecb062e5fbaa0e377bd02016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Khellin 40V, Positive-QTOFsplash10-006x-1690000000-54cc57c7b569891ff4aa2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Khellin 10V, Negative-QTOFsplash10-0a4i-0090000000-3ce0c06f77538e55790c2016-08-04Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Khellin 20V, Negative-QTOFsplash10-0a4i-0090000000-4f8f2d0b1275b18d855d2016-08-04Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Khellin 40V, Negative-QTOFsplash10-00kr-4690000000-108d9ffeecfac54c9cd42016-08-04Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Khellin 10V, Positive-QTOFsplash10-03di-0090000000-670b2b1b8bf4b4801c6d2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Khellin 20V, Positive-QTOFsplash10-03di-0090000000-670b2b1b8bf4b4801c6d2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Khellin 40V, Positive-QTOFsplash10-08fu-3390000000-17e7a965e6d1e8871dcb2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Khellin 10V, Negative-QTOFsplash10-0a4i-0090000000-2078657eda27694eca7a2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Khellin 20V, Negative-QTOFsplash10-0a4i-0090000000-f4edf05018457f0ae4112021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Khellin 40V, Negative-QTOFsplash10-0002-2920000000-ea39887fca12c5c215932021-10-12Wishart 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 IDC00002431
Chemspider IDNot Available
KEGG Compound IDC09010
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkKhellin
METLIN IDNot Available
PubChem Compound3828
PDB IDNot Available
ChEBI ID6133
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 ]