Record Information
Creation date2016-01-06 21:32:23 UTC
Update date2018-01-25 19:56:17 UTC
Primary IDFDB031321
Secondary Accession NumbersNot Available
Chemical Information
FooDB NameProtocatechuic acid 4-O-sulphate
DescriptionProtocatechuic acid 4-O-sulphate, also known as protocatechuate 4-O-sulfate, belongs to the class of organic compounds known as phenylsulfates. Phenylsulfates are compounds containing a sulfuric acid group conjugated to a phenyl group. Protocatechuic acid 4-O-sulphate is an extremely weak basic (essentially neutral) compound (based on its pKa).
CAS NumberNot Available
Protocatechuate 4-O-sulfateGenerator
Protocatechuate 4-O-sulphateGenerator
Protocatechuic acid 4-O-sulfuric acidGenerator
Protocatechuic acid 4-O-sulphuric acidGenerator
3-Hydroxy-sulfonyloxybenzoic acidMeSH
3-Hydroxy-4-(sulfooxy)benzoic acidHMDB
Protocatechuic acid sulfateHMDB
Protocatechuic acid sulphateHMDB
3,4-DHBA sulfateHMDB
3,4-DHBA sulphateHMDB
Predicted Properties
Water Solubility3.04 g/LALOGPS
pKa (Strongest Acidic)-2.7ChemAxon
pKa (Strongest Basic)-4.5ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count6ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area121.13 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity47.27 m³·mol⁻¹ChemAxon
Polarizability19.1 ųChemAxon
Number of Rings1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Chemical FormulaC7H6O7S
IUPAC name3-hydroxy-4-(sulfooxy)benzoic acid
InChI IdentifierInChI=1S/C7H6O7S/c8-5-3-4(7(9)10)1-2-6(5)14-15(11,12)13/h1-3,8H,(H,9,10)(H,11,12,13)
Isomeric SMILESOC(=O)C1=CC(O)=C(OS(O)(=O)=O)C=C1
Average Molecular Weight234.18
Monoisotopic Molecular Weight233.983423707
Description belongs to the class of organic compounds known as phenylsulfates. Phenylsulfates are compounds containing a sulfuric acid group conjugated to a phenyl group.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassOrganic sulfuric acids and derivatives
Sub ClassArylsulfates
Direct ParentPhenylsulfates
Alternative Parents
  • Phenylsulfate
  • Hydroxybenzoic acid
  • Benzoic acid or derivatives
  • Benzoic acid
  • Phenoxy compound
  • Benzoyl
  • 1-hydroxy-4-unsubstituted benzenoid
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • Monocyclic benzene moiety
  • Benzenoid
  • Sulfuric acid ester
  • Sulfate-ester
  • Sulfuric acid monoester
  • Carboxylic acid derivative
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Organooxygen compound
  • Hydrocarbon derivative
  • Organic oxygen compound
  • Organic oxide
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External DescriptorsNot Available
  • Cocoa and cocoa products
  • Grains:

    Nuts and legumes:

    Fruits and vegetables:

    Fats and oils:


    Physico-Chemical Properties - Experimental
    Physico-Chemical Properties - Experimental
    Physical stateNot Available
    Physical DescriptionNot Available
    Mass CompositionNot Available
    Melting PointNot Available
    Boiling PointNot Available
    Experimental Water SolubilityNot Available
    Experimental logPNot Available
    Experimental pKaNot Available
    Isoelectric pointNot Available
    ChargeNot Available
    Optical RotationNot Available
    Spectroscopic UV DataNot Available
    DensityNot Available
    Refractive IndexNot Available
    Spectrum TypeDescriptionSplash KeyView
    Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0uyi-1930000000-deb2d79f265b4d78fef5JSpectraViewer
    Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-001i-0390000000-ccabed7b27f365f5acceJSpectraViewer
    Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0a5i-0910000000-db7894fff6e16da697fcJSpectraViewer
    Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0udi-9600000000-eca3a36d6ed818fe4678JSpectraViewer
    Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-001i-0490000000-d91ee7d59a18f565a1ccJSpectraViewer
    Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0pc9-0910000000-52f458406ef93824b774JSpectraViewer
    Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4i-2900000000-cd6ebf2a6acafa9bc032JSpectraViewer
    ChemSpider IDNot Available
    ChEMBL IDNot Available
    KEGG Compound IDNot Available
    Pubchem Compound IDNot Available
    Pubchem Substance IDNot Available
    ChEBI IDNot Available
    Phenol-Explorer IDNot Available
    DrugBank IDNot Available
    HMDB IDNot Available
    CRC / DFC (Dictionary of Food Compounds) IDNot Available
    EAFUS IDNot Available
    Dr. Duke IDNot Available
    BIGG IDNot Available
    KNApSAcK IDNot Available
    HET IDNot Available
    Food Biomarker OntologyNot Available
    VMH IDNot Available
    Flavornet IDNot Available
    GoodScent IDNot Available
    SuperScent IDNot Available
    Wikipedia IDNot Available
    Phenol-Explorer Metabolite IDNot Available
    Duplicate IDSNot Available
    Old DFC IDSNot Available
    Associated Foods
    FoodContent Range AverageReference
    Biological Effects and Interactions
    Health Effects / BioactivitiesNot Available
    EnzymesNot Available
    PathwaysNot Available
    MetabolismNot Available
    BiosynthesisNot Available
    Organoleptic Properties
    FlavoursNot Available
    MSDSNot Available
    Synthesis ReferenceNot Available
    General ReferenceNot Available
    Content Reference