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Record Information
Version1.0
Creation Date2016-09-30 22:29:59 UTC
Update Date2020-05-11 22:27:57 UTC
MCDB ID BMDB0000397
Secondary Accession Numbers
  • BMDB00397
Metabolite Identification
Common Name2-Pyrocatechuic acid
Description2-Pyrocatechuic acid, also known as 2,3-dihydroxybenzoate or O-pyrocatechuate, belongs to the class of organic compounds known as salicylic acids. These are ortho-hydroxylated benzoic acids. 2-Pyrocatechuic acid is possibly soluble (in water) and an extremely weak basic (essentially neutral) compound (based on its pKa). 2-Pyrocatechuic acid exists in all living organisms, ranging from bacteria to humans.
Structure
Thumb
Synonyms
Chemical FormulaC7H6O4
Average Molecular Weight154.121
Monoisotopic Molecular Weight154.026608673
IUPAC Name2,3-dihydroxybenzoic acid
Traditional Name2,3-dihydroxy-benzoic acid
CAS Registry Number303-38-8
SMILES
OC(=O)C1=C(O)C(O)=CC=C1
InChI Identifier
InChI=1S/C7H6O4/c8-5-3-1-2-4(6(5)9)7(10)11/h1-3,8-9H,(H,10,11)
InChI KeyGLDQAMYCGOIJDV-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as salicylic acids. These are ortho-hydroxylated benzoic acids.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassBenzoic acids and derivatives
Direct ParentSalicylic acids
Alternative Parents
Substituents
  • Salicylic acid
  • Benzoic acid
  • Benzoyl
  • Catechol
  • 1-hydroxy-4-unsubstituted benzenoid
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • Vinylogous acid
  • Carboxylic acid derivative
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Organooxygen compound
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogP1.2HANSCH,C ET AL. (1995)
Predicted Properties
PropertyValueSource
logP1.42ALOGPS
logP1.67ChemAxon
logS-1.4ALOGPS
pKa (Strongest Acidic)2.56ChemAxon
pKa (Strongest Basic)-6.3ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area77.76 ŲChemAxon
Rotatable Bond Count1ChemAxon
Refractivity37.28 m³·mol⁻¹ChemAxon
Polarizability13.71 ųChemAxon
Number of Rings1ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Concentrations
StatusValueReferenceDetails
Detected but not QuantifiedNot Applicable details
HMDB IDHMDB0000397
DrugBank IDDB01672
Phenol Explorer Compound ID430
FoodDB IDFDB012200
KNApSAcK IDC00002669
Chemspider ID18
KEGG Compound IDC00196
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia Link2,3-Dihydroxybenzoic_acid
METLIN ID5386
PubChem Compound19
PDB IDNot Available
ChEBI ID18026
References
Synthesis ReferenceMega, Izumi; Ozawa, Shuji. Manufacture of 2,3-dihydroxybenzoic acid. Jpn. Kokai Tokkyo Koho (2001), 3 pp.
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Mung D, Li L: Applying quantitative metabolomics based on chemical isotope labeling LC-MS for detecting potential milk adulterant in human milk. Anal Chim Acta. 2018 Feb 25;1001:78-85. doi: 10.1016/j.aca.2017.11.019. Epub 2017 Nov 14. [PubMed:29291809 ]