Record Information
Version1.0
Created at2020-04-17 19:14:40 UTC
Updated at2020-12-07 19:11:41 UTC
CannabisDB IDCDB005153
Secondary Accession NumbersNot Available
Cannabis Compound Identification
Common NameHomogentisic acid
DescriptionHomogentisic acid, also known as homogentisate or acid, homogentisic, belongs to the class of organic compounds known as 2(hydroxyphenyl)acetic acids. These are phenylacetic acids that carry a hydroxyl group at the 2-position. A dihydroxyphenylacetic acid having the two hydroxy substituents at the 2- and 5-positions. Homogentisic acid is an extremely weak basic (essentially neutral) compound (based on its pKa). Homogentisic acid exists in all living organisms, ranging from bacteria to humans. Within humans, homogentisic acid participates in a number of enzymatic reactions. In particular, homogentisic acid can be biosynthesized from 4-hydroxyphenylpyruvic acid through the action of the enzyme 4-hydroxyphenylpyruvate dioxygenase. In addition, homogentisic acid can be converted into maleylacetoacetic acid; which is mediated by the enzyme homogentisate 1,2-dioxygenase. In humans, homogentisic acid is involved in the metabolic disorder called tyrosinemia, transient, of the newborn. Outside of the human body, Homogentisic acid has been detected, but not quantified in, several different foods, such as green beans, prunus (cherry, plum), black cabbages, hyacinth beans, and gram beans. This could make homogentisic acid a potential biomarker for the consumption of these foods. Homogentisic acid is a potentially toxic compound. Homogentisic acid, with regard to humans, has been found to be associated with several diseases such as eosinophilic esophagitis, ulcerative colitis, and crohn's disease; homogentisic acid has also been linked to the inborn metabolic disorder alkaptonuria. Homogentisic acid is expected to be in Cannabis as all living plants are known to produce and metabolize it.
Structure
Thumb
Synonyms
ValueSource
2,5-Dihydroxyphenylacetic acidChEBI
2-(3,6-DIHYDROXYPHENYL)acetIC ACIDChEBI
2,5-DihydroxyphenylacetateKegg
2-(3,6-DIHYDROXYPHENYL)acetateGenerator
HomogentisateGenerator
(2,5-Dihydroxyphenyl)-acetateHMDB
(2,5-Dihydroxyphenyl)-acetic acidHMDB
2,5-Dihydroxy-a-toluateHMDB
2,5-Dihydroxy-a-toluic acidHMDB
2,5-Dihydroxy-alpha-toluateHMDB
2,5-Dihydroxy-alpha-toluic acidHMDB
2,5-Dihydroxy-benzeneacetateHMDB
2,5-Dihydroxy-benzeneacetic acidHMDB
AlcaptonHMDB
Homogentisate acidHMDB
HomogentisinateHMDB
Homogentisinic acidHMDB
Melanic acidHMDB
Acid, homogentisicHMDB
Chemical FormulaC8H8O4
Average Molecular Weight168.15
Monoisotopic Molecular Weight168.0423
IUPAC Name2-(2,5-dihydroxyphenyl)acetic acid
Traditional Namehomogentisic acid
CAS Registry Number451-13-8
SMILES
OC(=O)CC1=C(O)C=CC(O)=C1
InChI Identifier
InChI=1S/C8H8O4/c9-6-1-2-7(10)5(3-6)4-8(11)12/h1-3,9-10H,4H2,(H,11,12)
InChI KeyIGMNYECMUMZDDF-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as 2(hydroxyphenyl)acetic acids. These are phenylacetic acids that carry a hydroxyl group at the 2-position.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassPhenylacetic acids
Direct Parent2(hydroxyphenyl)acetic acids
Alternative Parents
Substituents
  • 2(hydroxyphenyl)acetic acid
  • Hydroquinone
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Carbonyl group
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Ontology
Physiological effect

Health effect:

Disposition

Route of exposure:

Source:

Biological location:

Role

Indirect biological role:

Industrial application:

Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point153 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility850 mg/mL at 25 °CNot Available
logP0.86SANGSTER (1994)
Predicted Properties
PropertyValueSource
logP0.81ALOGPS
logP1ChemAxon
logS-1.3ALOGPS
pKa (Strongest Acidic)3.57ChemAxon
pKa (Strongest Basic)-5.9ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area77.76 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity41.33 m³·mol⁻¹ChemAxon
Polarizability15.57 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
EI-MS/GC-MS
TypeDescriptionSplash KeyView
GC-MSHomogentisic acid, non-derivatized, GC-MS Spectrumsplash10-000t-0945000000-2f4b9ef9c9ee6e7cd1edSpectrum
GC-MSHomogentisic acid, 3 TMS, GC-MS Spectrumsplash10-0016-3955000000-1cdc64ab3032ff29df29Spectrum
GC-MSHomogentisic acid, non-derivatized, GC-MS Spectrumsplash10-0a5c-0679000000-97890865f85a79efa2e6Spectrum
GC-MSHomogentisic acid, non-derivatized, GC-MS Spectrumsplash10-000t-0945000000-2f4b9ef9c9ee6e7cd1edSpectrum
GC-MSHomogentisic acid, non-derivatized, GC-MS Spectrumsplash10-0016-3955000000-1cdc64ab3032ff29df29Spectrum
GC-MSHomogentisic acid, non-derivatized, GC-MS Spectrumsplash10-0002-0944000000-fd48cc27da661ce24833Spectrum
Predicted GC-MSHomogentisic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positivesplash10-00di-4900000000-ea40fc8d43156151710cSpectrum
Predicted GC-MSHomogentisic acid, 3 TMS, Predicted GC-MS Spectrum - 70eV, Positivesplash10-014i-5093000000-c342ba08a9bff049fc1cSpectrum
Predicted GC-MSHomogentisic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TMS_1_1, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TMS_1_2, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TMS_1_3, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TMS_2_1, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TMS_2_2, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TMS_2_3, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TBDMS_1_1, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TBDMS_1_2, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TBDMS_1_3, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TBDMS_2_1, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TBDMS_2_2, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TBDMS_2_3, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSHomogentisic acid, TBDMS_3_1, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
MS/MS
TypeDescriptionSplash KeyView
MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-00di-0900000000-9c395aa569b4b54f86812012-07-24View Spectrum
MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-00xs-9500000000-ab92286f0d5bc843814b2012-07-24View Spectrum
MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-014l-9000000000-35740a40f4fdf3e84c3c2012-07-24View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negativesplash10-014i-0900000000-f4eba60d63bd99e18b8b2012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negativesplash10-00di-0900000000-12e330dc18f0b128b9612012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negativesplash10-00di-0900000000-4bd53b0472edd31e86092012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negativesplash10-00di-0900000000-7121173193a9ba3751a42012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negativesplash10-00di-1900000000-04eca21bf25c671b8b6e2012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QTOF (UPLC Q-Tof Premier, Waters) , Negativesplash10-00di-0900000000-780d3740762c2ff89d9a2012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-014i-0900000000-f4eba60d63bd99e18b8b2017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-00di-0900000000-12e330dc18f0b128b9612017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-00di-0900000000-4bd53b0472edd31e86092017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-00di-0900000000-7121173193a9ba3751a42017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-00di-1900000000-04eca21bf25c671b8b6e2017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QTOF , negativesplash10-00di-0900000000-9c85164306514c6d4c4b2017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - , negativesplash10-00di-0900000000-867a4e32ba2d14fd0aad2017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - 10V, Negativesplash10-00di-0900000000-ac8e05a9300b51b24e772021-09-20View Spectrum
MS/MSLC-MS/MS Spectrum - 40V, Negativesplash10-00di-1900000000-eeb664cef1197d6097352021-09-20View Spectrum
MS/MSLC-MS/MS Spectrum - 20V, Negativesplash10-00di-0900000000-1d890267ec7f3a5843b32021-09-20View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0gb9-0900000000-a650bbb95019f3305d032017-07-26View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00di-1900000000-94f13b2c7b97263537012017-07-26View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-05tf-9300000000-968a6390a00dcd77e5662017-07-26View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-01b9-0900000000-0f9d5926d702af7d4d632017-07-26View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-01b9-1900000000-7f257033d3b1952b3c272017-07-26View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4i-9800000000-bbcb0f0d7348cd1663b12017-07-26View Spectrum
NMR
TypeDescriptionView
1D NMR1H NMR Spectrum (1D, 600 MHz, H2O, experimental)Spectrum
1D NMR1H NMR Spectrum (1D, 400 MHz, DMSO-d6, experimental)Spectrum
1D NMR13C NMR Spectrum (1D, 22.53 MHz, DMSO-d6, experimental)Spectrum
1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)Spectrum
2D NMR[1H, 1H]-TOCSY. Unexported temporarily by An Chi on Oct 15, 2021 until json or nmrML file is generated. 2D NMR Spectrum (experimental)Spectrum
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental)Spectrum
Pathways
Pathways
Protein Targets
Enzymes
Protein NameGene NameLocusUniprot IDDetails
4-hydroxyphenylpyruvate dioxygenaseHPD12q24-qterP32754 details
Homogentisate 1,2-dioxygenaseHGD3q13.33Q93099 details
TransportersNot Available
Metal Bindings
Protein NameGene NameLocusUniprot IDDetails
4-hydroxyphenylpyruvate dioxygenaseHPD12q24-qterP32754 details
Homogentisate 1,2-dioxygenaseHGD3q13.33Q93099 details
ReceptorsNot Available
Transcriptional FactorsNot Available
Concentrations Data
Not Available
HMDB IDHMDB0000130
DrugBank IDDB08327
Phenol Explorer Compound IDNot Available
FoodDB IDFDB030907
KNApSAcK IDC00007309
Chemspider ID759
KEGG Compound IDC00544
BioCyc IDHOMOGENTISATE
BiGG ID1485308
Wikipedia LinkHomogentisic_acid
METLIN ID331
PubChem Compound780
PDB IDNot Available
ChEBI ID44747
References
General ReferencesNot Available

Enzymes

General function:
Involved in 4-hydroxyphenylpyruvate dioxygenase activity
Specific function:
Key enzyme in the degradation of tyrosine.
Gene Name:
HPD
Uniprot ID:
P32754
Molecular weight:
40497.105
General function:
Involved in homogentisate 1,2-dioxygenase activity
Specific function:
Not Available
Gene Name:
HGD
Uniprot ID:
Q93099
Molecular weight:
49963.41