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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2012-09-12 00:32:05 UTC
Update Date2022-03-07 02:56:05 UTC
HMDB IDHMDB0039166
Secondary Accession Numbers
  • HMDB39166
Metabolite Identification
Common NameCajaquinone
DescriptionCajaquinone belongs to the class of organic compounds known as hydroxyanthraquinones. Hydroxyanthraquinones are compounds containing a hydroxyanthraquinone moiety, which consists of an anthracene bearing a quinone, and hydroxyl group. Cajaquinone has been detected, but not quantified in, pigeon peas (Cajanus cajan) and pulses. This could make cajaquinone a potential biomarker for the consumption of these foods. Based on a literature review very few articles have been published on Cajaquinone.
Structure
Data?1563863325
Synonyms
ValueSource
3,7-Dihydroxy-1-methoxy-6-methylanthraquinoneHMDB
Chemical FormulaC16H12O5
Average Molecular Weight284.2635
Monoisotopic Molecular Weight284.068473494
IUPAC Name3,7-dihydroxy-1-methoxy-6-methyl-9,10-dihydroanthracene-9,10-dione
Traditional Name3,7-dihydroxy-1-methoxy-6-methylanthracene-9,10-dione
CAS Registry Number71241-94-6
SMILES
COC1=CC(O)=CC2=C1C(=O)C1=C(C=C(C)C(O)=C1)C2=O
InChI Identifier
InChI=1S/C16H12O5/c1-7-3-9-10(6-12(7)18)16(20)14-11(15(9)19)4-8(17)5-13(14)21-2/h3-6,17-18H,1-2H3
InChI KeyLKVVBLXHWZXDHZ-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as hydroxyanthraquinones. Hydroxyanthraquinones are compounds containing a hydroxyanthraquinone moiety, which consists of an anthracene bearing a quinone, and hydroxyl group.
KingdomOrganic compounds
Super ClassBenzenoids
ClassAnthracenes
Sub ClassAnthraquinones
Direct ParentHydroxyanthraquinones
Alternative Parents
Substituents
  • Hydroxyanthraquinone
  • Aryl ketone
  • Anisole
  • 1-hydroxy-2-unsubstituted benzenoid
  • Alkyl aryl ether
  • Ketone
  • Ether
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Aromatic homopolycyclic compound
Molecular FrameworkAromatic homopolycyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
Role
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point204 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility11.96 mg/L @ 25 °C (est)The Good Scents Company Information System
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility0.066 g/LALOGPS
logP2.9ALOGPS
logP2.67ChemAxon
logS-3.6ALOGPS
pKa (Strongest Acidic)7.19ChemAxon
pKa (Strongest Basic)-4.9ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area83.83 ŲChemAxon
Rotatable Bond Count1ChemAxon
Refractivity76.62 m³·mol⁻¹ChemAxon
Polarizability28.69 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
DarkChem[M+H]+169.22431661259
DarkChem[M-H]-166.01831661259
DeepCCS[M+H]+168.10430932474
DeepCCS[M-H]-165.74630932474
DeepCCS[M-2H]-199.38630932474
DeepCCS[M+Na]+174.61330932474
AllCCS[M+H]+163.432859911
AllCCS[M+H-H2O]+159.732859911
AllCCS[M+NH4]+166.832859911
AllCCS[M+Na]+167.832859911
AllCCS[M-H]-166.532859911
AllCCS[M+Na-2H]-165.832859911
AllCCS[M+HCOO]-165.132859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
CajaquinoneCOC1=CC(O)=CC2=C1C(=O)C1=C(C=C(C)C(O)=C1)C2=O4064.8Standard polar33892256
CajaquinoneCOC1=CC(O)=CC2=C1C(=O)C1=C(C=C(C)C(O)=C1)C2=O2608.6Standard non polar33892256
CajaquinoneCOC1=CC(O)=CC2=C1C(=O)C1=C(C=C(C)C(O)=C1)C2=O3061.6Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Cajaquinone,1TMS,isomer #1COC1=CC(O[Si](C)(C)C)=CC2=C1C(=O)C1=CC(O)=C(C)C=C1C2=O2799.0Semi standard non polar33892256
Cajaquinone,1TMS,isomer #2COC1=CC(O)=CC2=C1C(=O)C1=CC(O[Si](C)(C)C)=C(C)C=C1C2=O2774.3Semi standard non polar33892256
Cajaquinone,2TMS,isomer #1COC1=CC(O[Si](C)(C)C)=CC2=C1C(=O)C1=CC(O[Si](C)(C)C)=C(C)C=C1C2=O2850.2Semi standard non polar33892256
Cajaquinone,1TBDMS,isomer #1COC1=CC(O[Si](C)(C)C(C)(C)C)=CC2=C1C(=O)C1=CC(O)=C(C)C=C1C2=O3057.3Semi standard non polar33892256
Cajaquinone,1TBDMS,isomer #2COC1=CC(O)=CC2=C1C(=O)C1=CC(O[Si](C)(C)C(C)(C)C)=C(C)C=C1C2=O3038.7Semi standard non polar33892256
Cajaquinone,2TBDMS,isomer #1COC1=CC(O[Si](C)(C)C(C)(C)C)=CC2=C1C(=O)C1=CC(O[Si](C)(C)C(C)(C)C)=C(C)C=C1C2=O3357.7Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Cajaquinone GC-MS (Non-derivatized) - 70eV, Positivesplash10-0pb9-0590000000-0cd59a1ecb743b8a56fa2017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cajaquinone GC-MS (2 TMS) - 70eV, Positivesplash10-074i-6189800000-5efa676f0ba0d2d157bb2017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cajaquinone GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cajaquinone 10V, Positive-QTOFsplash10-000i-0090000000-ace72d9dec3227e467cb2016-06-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cajaquinone 20V, Positive-QTOFsplash10-000i-0690000000-9c5a9227df1a09117f2c2016-06-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cajaquinone 40V, Positive-QTOFsplash10-0ktr-3390000000-3bc5b477c59d7c70fc362016-06-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cajaquinone 10V, Negative-QTOFsplash10-001i-0090000000-f8a518b05340bff289222016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cajaquinone 20V, Negative-QTOFsplash10-001i-0090000000-657ff4f592a033eae79c2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cajaquinone 40V, Negative-QTOFsplash10-014j-2690000000-868ba04fa20718134e7a2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cajaquinone 10V, Positive-QTOFsplash10-000i-0090000000-edc9ea273e98ea6aa00a2021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cajaquinone 20V, Positive-QTOFsplash10-000i-0090000000-5d7fbbc55b6413eb2a492021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cajaquinone 40V, Positive-QTOFsplash10-067i-1980000000-1b8992242773973658e92021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cajaquinone 10V, Negative-QTOFsplash10-001i-0090000000-549f6b30f75977e8ff352021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cajaquinone 20V, Negative-QTOFsplash10-001i-0090000000-549f6b30f75977e8ff352021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cajaquinone 40V, Negative-QTOFsplash10-0fi0-0190000000-79dd11d1eb8a061836122021-09-25Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Membrane
Biospecimen LocationsNot Available
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB018693
KNApSAcK IDC00055311
Chemspider ID30777333
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound85977017
PDB IDNot Available
ChEBI ID174710
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDrw1874821
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. (). Yannai, Shmuel. (2004) Dictionary of food compounds with CD-ROM: Additives, flavors, and ingredients. Boca Raton: Chapman & Hall/CRC.. .