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Record Information
Version1.0
Creation Date2016-09-30 22:55:22 UTC
Update Date2020-05-21 16:28:35 UTC
BMDB IDBMDB0002434
Secondary Accession Numbers
  • BMDB02434
Metabolite Identification
Common NameHydroquinone
DescriptionHydroquinone, also known as quinol or 1,4-benzenediol, belongs to the class of organic compounds known as hydroquinones. Hydroquinones are compounds containing a hydroquinone moiety, which consists of a benzene ring with a hydroxyl groups at positions 1 and 4. Hydroquinone exists in all living organisms, ranging from bacteria to humans. In cattle, hydroquinone is involved in the metabolic pathway called the riboflavin metabolism pathway. Based on a literature review a significant number of articles have been published on Hydroquinone.
Structure
Thumb
Synonyms
Chemical FormulaC6H6O2
Average Molecular Weight110.1106
Monoisotopic Molecular Weight110.036779436
IUPAC Namebenzene-1,4-diol
Traditional Nameα-hydroquinone
CAS Registry Number123-31-9
SMILES
OC1=CC=C(O)C=C1
InChI Identifier
InChI=1S/C6H6O2/c7-5-1-2-6(8)4-3-5/h1-4,7-8H
InChI KeyQIGBRXMKCJKVMJ-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as hydroquinones. Hydroquinones are compounds containing a hydroquinone moiety, which consists of a benzene ring with a hydroxyl groups at positions 1 and 4.
KingdomOrganic compounds
Super ClassBenzenoids
ClassPhenols
Sub ClassBenzenediols
Direct ParentHydroquinones
Alternative Parents
Substituents
  • Hydroquinone
  • 1-hydroxy-2-unsubstituted benzenoid
  • Monocyclic benzene moiety
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Organooxygen compound
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Ontology
StatusExpected but not Quantified
Origin
  • Exogenous
BiofunctionNot Available
ApplicationNot Available
Cellular locations
  • Cytoplasm
  • Mitochondria
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point172.3 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility72.0 mg/mL at 25 °CNot Available
LogP0.59HANSCH,C ET AL. (1995)
Predicted Properties
PropertyValueSource
logP0.71ALOGPS
logP1.37ChemAxon
logS-0.06ALOGPS
pKa (Strongest Acidic)9.68ChemAxon
pKa (Strongest Basic)-5.9ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area40.46 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity30.02 m³·mol⁻¹ChemAxon
Polarizability10.75 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash Key
GC-MSGC-MS Spectrum - GC-MS (2 TMS)splash10-0f79-2490000000-6b4fec222a3499d93790View in MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-03di-9800000000-c90fd4986fea9691ecbfView in MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-03e9-9300000000-f8b11742557329691e8aView in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-0f79-2490000000-6b4fec222a3499d93790View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0f79-2690000000-7306adcc7121a11d67ccView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-03di-5900000000-954dc96d8e3eb85b8324View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (2 TMS) - 70eV, Positivesplash10-00e9-8950000000-512c0cf5ddc0b120ec8eView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableView in JSpectraViewer
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-03di-9600000000-e670ba090cb27367db12View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-01p6-9000000000-5fc32c7688c1612df1e7View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-000i-9000000000-c5853ce8ef225ea5c353View in MoNA
LC-MS/MSLC-MS/MS Spectrum - EI-B (Unknown) , Positivesplash10-03di-9800000000-c90fd4986fea9691ecbfView in MoNA
LC-MS/MSLC-MS/MS Spectrum - , negativesplash10-0a4i-0900000000-5635f0157cd37deb1121View in MoNA
LC-MS/MSLC-MS/MS Spectrum - , positivesplash10-03di-2900000000-05be113033a709130eedView in MoNA
LC-MS/MSLC-MS/MS Spectrum - 20V, Negativesplash10-0a4i-9600000000-e0d15b2e4ea35a7a76beView in MoNA
LC-MS/MSLC-MS/MS Spectrum - 20V, Positivesplash10-01r6-9000000000-946504408977df40269aView in MoNA
LC-MS/MSLC-MS/MS Spectrum - 10V, Negativesplash10-0a4i-0900000000-c16180dd26c127563155View in MoNA
LC-MS/MSLC-MS/MS Spectrum - 40V, Positivesplash10-03dl-9000000000-cea1cb486f12ea31e3a1View in MoNA
LC-MS/MSLC-MS/MS Spectrum - 10V, Positivesplash10-01ox-9000000000-3a9d5710c88793e698f1View in MoNA
LC-MS/MSLC-MS/MS Spectrum - 40V, Negativesplash10-0006-9000000000-60eeaa79bff371773b2eView in MoNA
LC-MS/MSLC-MS/MS Spectrum - 20V, Negativesplash10-0a4i-0900000000-3a9e293da186985db7faView in MoNA
LC-MS/MSLC-MS/MS Spectrum - 40V, Negativesplash10-0pb9-9000000000-84bb0a9b4c3cd16da2a7View in MoNA
LC-MS/MSLC-MS/MS Spectrum - 10V, Negativesplash10-0a4i-7900000000-2256214c81a3e04e01b7View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-03di-0900000000-8d8328e4f7cd2ebaa27dView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-03di-1900000000-9290fcb93f170fc3143fView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-01si-9200000000-9f707b9d0c4ad0b73b30View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0a4i-0900000000-d3aae38632ac4c40fd4fView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0a4i-0900000000-74f15490ba4f49cf8c18View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4i-9800000000-1cb01248e88fce387578View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0a4i-0900000000-9f2c82efe2cba7470e17View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0a4i-0900000000-9f2c82efe2cba7470e17View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0f6x-9000000000-8213c13cc381b346f976View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-03di-0900000000-fd10fd64675560620b8dView in MoNA
MSMass Spectrum (Electron Ionization)splash10-03di-9500000000-1fa8477944a662535e76View in MoNA
1D NMR1H NMR Spectrum (1D, 600 MHz, H2O, experimental)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 300 MHz, DMSO-d6, experimental)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 15.08 MHz, DMSO-d6, experimental)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental)Not AvailableView in JSpectraViewer
Biological Properties
Cellular Locations
  • Cytoplasm
  • Mitochondria
Biospecimen Locations
  • Bone Marrow
  • Epidermis
  • Fibroblasts
  • Kidney
  • Liver
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
Bone MarrowExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
EpidermisExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
FibroblastsExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
KidneyExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
LiverExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
Abnormal Concentrations
Not Available
HMDB IDHMDB0002434
DrugBank IDDB09526
Phenol Explorer Compound ID660
FooDB IDFDB000885
KNApSAcK IDC00002656
Chemspider ID764
KEGG Compound IDC00530
BioCyc IDHYDROQUINONE
BiGG IDNot Available
Wikipedia LinkHydroquinone
METLIN ID6681
PubChem Compound785
PDB IDNot Available
ChEBI ID17594
References
Synthesis ReferenceMiyanohara, Isao; Yanagihara, Tadahisa. Hydroquinone. Jpn. Kokai Tokkyo Koho (1977), 4 pp.
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available

Enzymes

General function:
Energy production and conversion
Specific function:
Not Available
Gene Name:
GPD2
Uniprot ID:
A6QLU1
Molecular weight:
80763.0
Reactions
Glycerol 3-phosphate + Quinone → Dihydroxyacetone phosphate + Hydroquinonedetails
Dihydroxyacetone phosphate + Quinone → Glycerol 3-phosphate + Hydroquinonedetails
General function:
Nucleotide transport and metabolism
Specific function:
Catalyzes the conversion of dihydroorotate to orotate with quinone as electron acceptor.
Gene Name:
DHODH
Uniprot ID:
Q5E9W3
Molecular weight:
42776.0
General function:
Involved in copper ion binding
Specific function:
This is a copper-containing oxidase that functions in the formation of pigments such as melanins and other polyphenolic compounds. Catalyzes the initial and rate limiting step in the cascade of reactions leading to melanin production from tyrosine. In addition to hydroxylating tyrosine to DOPA (3,4-dihydroxyphenylalanine), also catalyzes the oxidation of DOPA to DOPA-quinone, and possibly the oxidation of DHI (5,6-dihydroxyindole) to indole-5,6 quinone.
Gene Name:
TYR
Uniprot ID:
Q8MIU0
Molecular weight:
60304.0
Reactions
2 Hydroquinone + Oxygen →2 Quinone +2 Waterdetails