Record Information
Version1.0
Creation Date2014-08-29 05:21:27 UTC
Update Date2026-05-21 01:37:32 UTC
Accession NumberCHEM003083
Identification
Common NameUrushiol III
ClassSmall Molecule
DescriptionUrushiol is an oily organic allergen found in plants of the family Anacardiaceae, especially Toxicodendron spp.(e.g., poison oak, poison ivy, poison sumac) and also in mangos. In sensitive individuals, urushiol can cause an allergic skin rash on contact, known as urushiol-induced contact dermatitis. The name comes from the Japanese word for the tree Toxicodendron vernicifluum
Contaminant Sources
  • T3DB toxins
Contaminant Type
  • Natural Compound
  • Organic Compound
  • PFAS
  • Phytotoxin
  • Plant Toxin
Chemical Structure
Thumb
Synonyms
ValueSource
3-(8,11-Pentadecadienyl)-1,2-benzenediolKegg
Chemical FormulaC21H32O2
Average Molecular Mass316.478 g/mol
Monoisotopic Mass316.240 g/mol
CAS Registry Number492-91-1
IUPAC NameNot Available
Traditional Nameurushiol III
SMILES[H]\C(CCC)=C(\[H])C\C([H])=C(/[H])CCCCCCCC1=C(O)C(O)=CC=C1
InChI IdentifierInChI=1S/C21H32O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-16-19-17-15-18-20(22)21(19)23/h4-5,7-8,15,17-18,22-23H,2-3,6,9-14,16H2,1H3/b5-4+,8-7+
InChI KeyRMTXUPIIESNLPW-AOSYACOCSA-N
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
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Organooxygen compound
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
OriginExogenous
Cellular Locations
  • Membrane
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateSolid
AppearanceWhite powder.
Experimental Properties
PropertyValue
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.00066 g/LALOGPS
logP7.7ALOGPS
logP7.38ChemAxon
logS-5.7ALOGPS
pKa (Strongest Acidic)9.55ChemAxon
pKa (Strongest Basic)-6.3ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area40.46 ŲChemAxon
Rotatable Bond Count12ChemAxon
Refractivity101.71 m³·mol⁻¹ChemAxon
Polarizability39.05 ųChemAxon
Number of Rings1ChemAxon
Bioavailability0ChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-014i-1129000000-e38760801aa2c2790ffbSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-066u-7792000000-337dd3505e54d46cd256Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-052f-9550000000-d2cff240d89eceff1bf4Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0009000000-ff9cd7373af0eaf19594Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-014i-0029000000-19d3974e2bab93248285Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4j-0790000000-bcd88ea224da13dc64f3Spectrum
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityNot Available
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesUrushiol is an oily organic allergen found in plants of the family Anacardiaceae, especially Toxicodendron spp.
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentNot Available
Concentrations
Not Available
DrugBank IDNot Available
HMDB IDNot Available
FooDB IDNot Available
Phenol Explorer IDNot Available
KNApSAcK IDC00002681
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkNot Available
Chemspider IDNot Available
ChEBI ID9909
PubChem Compound ID5281862
Kegg Compound IDC10839
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSNot Available
General ReferencesNot Available