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Record Information
Version2.0
Created at2005-11-16 15:48:42 UTC
Updated at2021-10-07 20:39:32 UTC
NP-MRD IDNP0000365
Secondary Accession NumbersNone
Natural Product Identification
Common Name3,4-Dihydroxyphenylglycol
Description3,4-Dihydroxyphenylglycol, also known as DHPG or DOPEG, belongs to the class of organic compounds known as catechols. Catechols are compounds containing a 1,2-benzenediol moiety. 3,4-Dihydroxyphenylglycol is an extremely weak basic (essentially neutral) compound. 3,4-Dihydroxyphenylglycol exists in all living organisms, ranging from bacteria to plants to humans. It is a potent antioxidant (PMID: 30007612 ). In mammals, 3,4-Dihydroxyphenylglycol is the primary metabolite of norepinephrine and is generated through the action of the enzyme monoamine oxidase (MAO). DHPG is then further metabolized by the enzyme Catechol-O-methyltransferase (COMT) to 3-methoxy-4-hydroxyphenylglycol (MHPG). Within humans, 3,4-dihydroxyphenylglycol participates in a number of enzymatic reactions. In particular, 3,4-dihydroxyphenylglycol can be biosynthesized from 3,4-dihydroxymandelaldehyde; which is mediated by the enzyme alcohol dehydrogenase 1A. In addition, 3,4-dihydroxyphenylglycol and guaiacol can be converted into vanylglycol and pyrocatechol through its interaction with the enzyme catechol O-methyltransferase. Outside of the human body, 3,4-dihydroxyphenylglycol is found, on average, in the highest concentration in olives. High levels of DHPG (up to 368 mg/kg of dry weight) have been found in the pulp of natural black olives. This could make 3,4-dihydroxyphenylglycol a potential biomarker for the consumption of olives and olive oil. 3,4-Dihydroxyphenylglycol has been linked to Menkes disease (PMID: 19234788 ). DHPG level are lower in Menkes patients (3.57 ± 0.40 NM) than healthy infants 8.91 ± 0.77 NM). Menkes disease (also called “kinky hair disease”) is an X-linked recessive neurodevelopmental disorder caused by defects in a gene that encodes a copper-transporting ATPase (ATP7A). Affected infants typically appear healthy at birth and show normal neurodevelopment for 2-3 months. Subsequently there is loss of milestones (e.G., Smiling, visual tracking, head control) and death in late infancy or childhood (PMID: 19234788 ).
Structure
Thumb
Synonyms
Chemical FormulaC8H10O4
Average Mass170.1626 Da
Monoisotopic Mass170.05791 Da
IUPAC Name4-(1,2-dihydroxyethyl)benzene-1,2-diol
Traditional Name3,4-dihydroxyphenylglycol
CAS Registry Number28822-73-3
SMILES
OCC(O)C1=CC(O)=C(O)C=C1
InChI Identifier
InChI=1S/C8H10O4/c9-4-8(12)5-1-2-6(10)7(11)3-5/h1-3,8-12H,4H2
InChI KeyMTVWFVDWRVYDOR-UHFFFAOYSA-N
Experimental Spectra
Spectrum TypeDescriptionDepositor EmailDepositor OrganizationDepositorDeposition DateView
1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, experimental)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
Predicted Spectra
Not Available
Chemical Shift Submissions
Not Available
Species
Species of Origin
Chemical Taxonomy
Description Belongs to the class of organic compounds known as catechols. Catechols are compounds containing a 1,2-benzenediol moiety.
KingdomOrganic compounds
Super ClassBenzenoids
ClassPhenols
Sub ClassBenzenediols
Direct ParentCatechols
Alternative Parents
Substituents
  • Catechol
  • 1-hydroxy-4-unsubstituted benzenoid
  • 1-hydroxy-2-unsubstituted benzenoid
  • Monocyclic benzene moiety
  • Secondary alcohol
  • 1,2-diol
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Aromatic alcohol
  • Primary alcohol
  • Organooxygen compound
  • Alcohol
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point130 - 132 °CNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogP-1.01Hansch CH, Leo A and Hoekman DH. "Exploring QSAR: Hydrophobic, Electronic, and Steric Constraints. Volume 1" ACS Publications (1995).
Predicted Properties
PropertyValueSource
Water Solubility16.7 g/LALOGPS
logP-0.72ALOGPS
logP-0.032ChemAxon
logS-1ALOGPS
pKa (Strongest Acidic)9.21ChemAxon
pKa (Strongest Basic)-3ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count4ChemAxon
Polar Surface Area80.92 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity42.8 m³·mol⁻¹ChemAxon
Polarizability16.57 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0000318
DrugBank IDNot Available
Phenol Explorer Compound ID661
FoodDB IDFDB030385
KNApSAcK IDNot Available
Chemspider ID82648
KEGG Compound IDC05576
BioCyc IDCPD-11878
BiGG ID46054
Wikipedia LinkNot Available
METLIN ID5307
PubChem Compound91528
PDB IDNot Available
ChEBI ID1387
Good Scents IDNot Available
References
General References