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Record Information
Version2.0
Created at2006-08-12 21:10:36 UTC
Updated at2021-08-19 23:58:14 UTC
NP-MRD IDNP0000600
Secondary Accession NumbersNone
Natural Product Identification
Common NameTryptophanol
DescriptionTryptophol, also known as indole-3-ethanol, is an indolyl alcohol that is ethanol substituted by a 1H-indol-3-yl group at position 2. It has a role as a Saccharomyces cerevisiae metabolite, an auxin and a plant metabolite. Tryptophol is a catabolite of tryptophan converted by the gut microbiota. After absorption through the intestinal epithelium, tryptophan catabolites enter the bloodstream and are later excreted in the urine (PMID: 30120222 ). Tryptophol production was negatively associated with interferon-gamma production (IFNγ) which suggests that tryptophol has anti-inflammatory properties (PMID: 27814509 ). Tryptophol has also been identified as the hypnotic agent in trypanosomal sleeping sickness, and because it is formed in vivo after ethanol or disulfiram treatment, it is also associated with the study of alcoholism (PMID: 7241135 ).
Structure
Data?1628564080
Synonyms
Chemical FormulaC10H11NO
Average Mass161.2004 Da
Monoisotopic Mass161.08406 Da
IUPAC Name2-(1H-indol-3-yl)ethan-1-ol
Traditional Nametryptophol
CAS Registry Number526-55-6
SMILES
[H]OC([H])([H])C([H])([H])C1=C([H])N([H])C2=C([H])C([H])=C([H])C([H])=C12
InChI Identifier
InChI=1S/C10H11NO/c12-6-5-8-7-11-10-4-2-1-3-9(8)10/h1-4,7,11-12H,5-6H2
InChI KeyMBBOMCVGYCRMEA-UHFFFAOYSA-N
Experimental Spectra
Spectrum TypeDescriptionDepositor EmailDepositor OrganizationDepositorDeposition DateView
1D NMR1H NMR Spectrum (1D, 500 MHz, CDCl3, experimental)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, CD3OD, experimental)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
Predicted Spectra
Chemical Shift Submissions
Not Available
Species
Species of Origin
Species Where Detected
Species NameSourceReference
Drechslera nodulosumKNApSAcK Database
Hansenula henriciiKNApSAcK Database
Phycomyces blakesleeanusKNApSAcK Database
Saccharomyces cerevisiaeKNApSAcK Database
Streptomyces atroolivaceusKNApSAcK Database
Streptomyces mutabilisKNApSAcK Database
Chemical Taxonomy
Description Belongs to the class of organic compounds known as 3-alkylindoles. 3-Alkylindoles are compounds containing an indole moiety that carries an alkyl chain at the 3-position.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassIndoles and derivatives
Sub ClassIndoles
Direct Parent3-alkylindoles
Alternative Parents
Substituents
  • 3-alkylindole
  • Benzenoid
  • Substituted pyrrole
  • Heteroaromatic compound
  • Pyrrole
  • Azacycle
  • Organic nitrogen compound
  • Organic oxygen compound
  • Organopnictogen compound
  • Hydrocarbon derivative
  • Primary alcohol
  • Organooxygen compound
  • Organonitrogen compound
  • Alcohol
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point59 °CNot Available
Boiling Point357.80 °C. @ 760.00 mm Hg (est)The Good Scents Company Information System
Water Solubility2749 mg/L @ 25 °C (est)The Good Scents Company Information System
LogP1.280 (est)The Good Scents Company Information System
Predicted Properties
PropertyValueSource
Water Solubility1.61 g/LALOGPS
logP1.82ALOGPS
logP1.59ChemAxon
logS-2ALOGPS
pKa (Strongest Acidic)15.8ChemAxon
pKa (Strongest Basic)-2.4ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count1ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area36.02 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity48.72 m³·mol⁻¹ChemAxon
Polarizability17.88 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0003447
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB030938
KNApSAcK IDC00000114
Chemspider ID10235
KEGG Compound IDC00955
BioCyc IDCPD-341
BiGG IDNot Available
Wikipedia LinkTryptophol
METLIN ID6932
PubChem Compound10685
PDB IDNot Available
ChEBI ID17890
Good Scents IDrw1295861
References
General References
  1. Curtius HC, Wolfensberger M, Redweik U, Leimbacher W, Maibach RA, Isler W: Mass fragmentography of 5-hydroxytryptophol and 5-methoxytryptophol in human cerebrospinal fluid. J Chromatogr. 1975 Oct 29;112:523-31. [PubMed:1184685 ]
  2. Takahashi S, Godse DD, Naqvi A, Warsh JJ, Stancer HC: 5-Hydroxytryptophol in human cerebrospinal fluid: quantitative determination by gas chromatography-mass spectrometry using a deuterated internal standard. Clin Chim Acta. 1978 Mar 1;84(1-2):55-62. [PubMed:639316 ]
  3. Cornford EM, Crane PD, Braun LD, Bocash WD, Nyerges AM, Oldendorf WH: Reduction in brain glucose utilization rate after tryptophol (3-indole ethanol) treatment. J Neurochem. 1981 May;36(5):1758-65. [PubMed:7241135 ]
  4. Schirmer M, Smeekens SP, Vlamakis H, Jaeger M, Oosting M, Franzosa EA, Ter Horst R, Jansen T, Jacobs L, Bonder MJ, Kurilshikov A, Fu J, Joosten LAB, Zhernakova A, Huttenhower C, Wijmenga C, Netea MG, Xavier RJ: Linking the Human Gut Microbiome to Inflammatory Cytokine Production Capacity. Cell. 2016 Nov 3;167(4):1125-1136.e8. doi: 10.1016/j.cell.2016.10.020. [PubMed:27814509 ]