Record Information
Version1.0
Creation Date2020-05-05 15:49:03 UTC
Update Date2020-05-05 18:40:45 UTC
BMDB IDBMDB0109646
Secondary Accession NumbersNone
Metabolite Identification
Common NameProtocatechuic acid
DescriptionProtocatechuic acid, also known as protocatechuate or 3,4-dihydroxybenzoate, belongs to the class of organic compounds known as hydroxybenzoic acid derivatives. Hydroxybenzoic acid derivatives are compounds containing a hydroxybenzoic acid (or a derivative), which is a benzene ring bearing a carboxyl and a hydroxyl groups. A dihydroxybenzoic acid in which the hydroxy groups are located at positions 3 and 4. Protocatechuic acid is an extremely weak basic (essentially neutral) compound (based on its pKa). Outside of the human body, Protocatechuic acid has been detected, but not quantified in, several different foods, such as dills, nuts, fireweeds, almonds, and muscadine grapes. This could make protocatechuic acid a potential biomarker for the consumption of these foods.
Structure
Thumb
Synonyms
ValueSource
4,5-Dihydroxybenzoic acidChEBI
4-Carboxy-1,2-dihydroxybenzeneChEBI
Protocatehuic acidChEBI
3,4-Dihydroxybenzoic acidKegg
ProtocatechuateKegg
4,5-DihydroxybenzoateGenerator
ProtocatehuateGenerator
3,4-DihydroxybenzoateGenerator
Protocatechuic acid, monosodium saltHMDB
Protocatechuic acid, carboxy-14C-labeledHMDB
2,4-DihydroxybenzoateHMDB
2,4-Dihydroxybenzoic acidHMDB
b-ResorcylateHMDB
b-Resorcylic acidHMDB
beta-ResorcylateHMDB
beta-Resorcylic acidHMDB
3,4-DHBAHMDB
1,2-Dihydroxybenzene-4-carboxylic acidPhytoBank
Protocatechoic acidPhytoBank
Proto-catechuic acidPhytoBank
Protocatechuic acidHMDB
Chemical FormulaC7H6O4
Average Molecular Weight154.121
Monoisotopic Molecular Weight154.026608673
IUPAC Name3,4-dihydroxybenzoic acid
Traditional Name3,4-dihydroxybenzoic acid
CAS Registry NumberNot Available
SMILES
OC(=O)C1=CC(O)=C(O)C=C1
InChI Identifier
InChI=1S/C7H6O4/c8-5-2-1-4(7(10)11)3-6(5)9/h1-3,8-9H,(H,10,11)
InChI KeyYQUVCSBJEUQKSH-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as hydroxybenzoic acid derivatives. Hydroxybenzoic acid derivatives are compounds containing a hydroxybenzoic acid (or a derivative), which is a benzene ring bearing a carboxyl and a hydroxyl groups.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassBenzoic acids and derivatives
Direct ParentHydroxybenzoic acid derivatives
Alternative Parents
Substituents
  • Dihydroxybenzoic acid
  • Hydroxybenzoic acid
  • Benzoic acid
  • Benzoyl
  • Catechol
  • 1-hydroxy-4-unsubstituted benzenoid
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • Carboxylic acid derivative
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Organooxygen compound
  • Organic oxide
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Ontology
StatusDetected but not Quantified
OriginNot Available
BiofunctionNot Available
ApplicationNot Available
Cellular locationsNot Available
Physical Properties
StateNot Available
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP1.32ALOGPS
logP1.02ChemAxon
logS-1.1ALOGPS
pKa (Strongest Acidic)4.16ChemAxon
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
Polarizability13.85 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-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (3 TMS)splash10-0006-0913000000-0933eeed3701393aa41fView in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-0006-0911000000-ca1452bfe34749c0d8c1View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (3 TMS)splash10-00dl-9711000000-595a58baf84bb73670aeView in MoNA
GC-MSGC-MS Spectrum - GC-MS (3 TMS)splash10-0006-4912000000-a095cbdb4d3809a9b775View in MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0gb9-9800000000-f08a8e55f19d388091c0View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0006-0913000000-0933eeed3701393aa41fView in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0006-0911000000-ca1452bfe34749c0d8c1View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00dl-9711000000-595a58baf84bb73670aeView in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-0006-4912000000-a095cbdb4d3809a9b775View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0006-0911000000-c141d09a094e57440cd4View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-114r-2900000000-ad8c99ac8e347f2d0a02View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (3 TMS) - 70eV, Positivesplash10-05aj-4092000000-dfefa4fd6fad51de9dbcView 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-0900000000-9e8a76eec66c42952ee9View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-0296-9100000000-145f71b183841a31fdc8View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-014i-9000000000-9044e5839d8d0b8f8ee6View in MoNA
LC-MS/MSLC-MS/MS Spectrum - EI-B (HITACHI M-52) , Positivesplash10-0gb9-9800000000-f08a8e55f19d388091c0View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QTOF (UPLC Q-Tof Premier, Waters) , Negativesplash10-0a4i-0900000000-58c9b8232fbc187217d4View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QTOF , negativesplash10-0a4i-0900000000-58c9b8232fbc187217d4View in MoNA
LC-MS/MSLC-MS/MS Spectrum - , negativesplash10-0a4i-0900000000-43a650326b83e2dfe589View in MoNA
LC-MS/MSLC-MS/MS Spectrum - , positivesplash10-0a4i-0900000000-61ebd9558aeeb60dda89View in MoNA
LC-MS/MSLC-MS/MS Spectrum - 40V, Negativesplash10-0a4i-6900000000-dbc2159e590d48566b2cView in MoNA
LC-MS/MSLC-MS/MS Spectrum - 35V, Negativesplash10-0a4i-0900000000-e6774ca1e916f97ad70dView in MoNA
LC-MS/MSLC-MS/MS Spectrum - 35V, Negativesplash10-0a4i-0900000000-0bc46bd9df728e43dc63View in MoNA
LC-MS/MSLC-MS/MS Spectrum - 20V, Negativesplash10-0a4i-1900000000-0d999db8c8012fe5222cView in MoNA
LC-MS/MSLC-MS/MS Spectrum - 10V, Negativesplash10-0a4i-0900000000-7ecb0cf92a0c6bd88150View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0a4r-0900000000-99ac3661fc7809f28796View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0a4r-0900000000-df55ffdd340947acfac9View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0pc9-9500000000-201668ae66ab0379946fView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0a4r-0900000000-99ac3661fc7809f28796View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0a4r-0900000000-df55ffdd340947acfac9View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0pc9-9500000000-201668ae66ab0379946fView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0udi-0900000000-0595d63853a488b9c6cfView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0pb9-0900000000-d794b62eb087aaa84f94View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4i-9700000000-32a6fa42639cb300cdc9View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0udi-0900000000-0595d63853a488b9c6cfView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0pb9-0900000000-d794b62eb087aaa84f94View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4i-9700000000-32a6fa42639cb300cdc9View in MoNA
1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, experimental)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 400 MHz, DMSO-d6, experimental)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 15.09 MHz, DMSO-d6, experimental)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, D2O, experimental)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, D2O, experimental)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 100 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, 200 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, 300 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, 400 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, 500 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, 600 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, 700 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, 800 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, 900 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, CD3OD, experimental)Not AvailableView in JSpectraViewer
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Mammary Gland
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
Mammary GlandDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
Abnormal Concentrations
Not Available
HMDB IDHMDB0001856
DrugBank IDDB03946
Phenol Explorer Compound ID412
FooDB IDFDB031135
KNApSAcK IDC00002668
Chemspider ID71
KEGG Compound IDC00230
BioCyc ID3-4-DIHYDROXYBENZOATE
BiGG IDNot Available
Wikipedia LinkProtocatechuic_acid
METLIN ID6350
PubChem Compound72
PDB IDNot Available
ChEBI ID36062
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available