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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2006-03-08 14:40:32 UTC
Update Date2023-02-21 17:15:56 UTC
HMDB IDHMDB0001896
Secondary Accession Numbers
  • HMDB01896
Metabolite Identification
Common Name5-Methoxytryptophol
Description5-Methoxytryptophol is synthesized by the pineal gland. Daily rhythms in pineal methoxyindole metabolism have been described in rodents and humans (5-Methoxytryptophol levels are coincident with serotonin levels in rodents pineal) and 5-Methoxytryptophol at its highest during the daylight hours and fall markedly soon after the onset of darkness, coincident with increases in the levels of pineal melatonin and the activities of pineal serotonin-N-acetyltransferase (EC 2.3.1.87, SNAT) and hydroxyindole-O-methyltransferase (EC 2.1.1.4, HIOMT). The fact that the levels of 5-methoxytryptophol and melatonin vary in parallel suggests that the major factor generating the methoxyindole rhythms is not SNAT activity, but perhaps a change in the availability (for metabolism) of "stored" serotonin. When the onset of darkness is delayed by 12 hours, human 5-methoxytryptophol (and melatonin) rhythms usually require 3 or 4 days to adjust to the new lighting regimen. Environmental factors, other than light, that activate the sympathetic nervous system or cause epinephrine to be secreted from the adrenal medulla (e.g., the stress of immobilization; insulin-induced hypoglycemia) can override the inhibitory effects of light and accelerate melatonin synthesis. Rhythms in 5-methoxytryptophol (and melatonin) synthesis apparently persist among animals placed in environments of continuous darkness; the source of the cyclic signal (mediated by the pineal sympathetic nerves) has not yet been identified. Preliminary evidence suggests that levels of a peptide hormone, arginine vasotocin, in rat pineal and sera also exhibit daily rhythms and are increased by norepinephrine. The circadian rhythm of melatonin secretion is generated in the suprachiasmatic nucleus. Sleep disruption, nightly restlessness, sundowning, and other circadian disturbances are frequently seen in Alzheimer's disease patients. Changes in the suprachiasmatic nucleus and pineal gland are thought to be the biological basis for these behavioral disturbances. (PMID 288858 , 2245336 ).
Structure
Data?1676999756
Synonyms
ValueSource
MethoxytryptopholMeSH
5-Methoxy-1H-indole-3-ethanolHMDB
5-Methoxyindole-3-ethanolHMDB
5-MethoxytryptopholMeSH
Chemical FormulaC11H13NO2
Average Molecular Weight191.2264
Monoisotopic Molecular Weight191.094628665
IUPAC Name2-(5-methoxy-1H-indol-3-yl)ethan-1-ol
Traditional Namemethoxytryptophol
CAS Registry Number712-09-4
SMILES
COC1=CC=C2NC=C(CCO)C2=C1
InChI Identifier
InChI=1S/C11H13NO2/c1-14-9-2-3-11-10(6-9)8(4-5-13)7-12-11/h2-3,6-7,12-13H,4-5H2,1H3
InChI KeyQLWKTGDEPLRFAT-UHFFFAOYSA-N
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
  • Anisole
  • Alkyl aryl ether
  • Substituted pyrrole
  • Benzenoid
  • Pyrrole
  • Heteroaromatic compound
  • Ether
  • Azacycle
  • Hydrocarbon derivative
  • Organopnictogen compound
  • Alcohol
  • Primary alcohol
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Physiological effect
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility0.64 g/LALOGPS
logP1.84ALOGPS
logP1.44ChemAxon
logS-2.5ALOGPS
pKa (Strongest Acidic)15.83ChemAxon
pKa (Strongest Basic)-2.4ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area45.25 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity55.18 m³·mol⁻¹ChemAxon
Polarizability20.86 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+141.70631661259
DarkChem[M-H]-142.99731661259
AllCCS[M+H]+142.07932859911
AllCCS[M-H]-144.59732859911
DeepCCS[M+H]+140.42730932474
DeepCCS[M-H]-137.5130932474
DeepCCS[M-2H]-173.9130932474
DeepCCS[M+Na]+149.44930932474
AllCCS[M+H]+142.132859911
AllCCS[M+H-H2O]+137.832859911
AllCCS[M+NH4]+146.132859911
AllCCS[M+Na]+147.232859911
AllCCS[M-H]-144.632859911
AllCCS[M+Na-2H]-144.932859911
AllCCS[M+HCOO]-145.432859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
5-MethoxytryptopholCOC1=CC=C2NC=C(CCO)C2=C13136.8Standard polar33892256
5-MethoxytryptopholCOC1=CC=C2NC=C(CCO)C2=C11965.8Standard non polar33892256
5-MethoxytryptopholCOC1=CC=C2NC=C(CCO)C2=C12024.0Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
5-Methoxytryptophol,1TMS,isomer #1COC1=CC=C2[NH]C=C(CCO[Si](C)(C)C)C2=C12022.2Semi standard non polar33892256
5-Methoxytryptophol,1TMS,isomer #2COC1=CC=C2C(=C1)C(CCO)=CN2[Si](C)(C)C2040.8Semi standard non polar33892256
5-Methoxytryptophol,2TMS,isomer #1COC1=CC=C2C(=C1)C(CCO[Si](C)(C)C)=CN2[Si](C)(C)C2052.8Semi standard non polar33892256
5-Methoxytryptophol,2TMS,isomer #1COC1=CC=C2C(=C1)C(CCO[Si](C)(C)C)=CN2[Si](C)(C)C2119.7Standard non polar33892256
5-Methoxytryptophol,2TMS,isomer #1COC1=CC=C2C(=C1)C(CCO[Si](C)(C)C)=CN2[Si](C)(C)C2299.8Standard polar33892256
5-Methoxytryptophol,1TBDMS,isomer #1COC1=CC=C2[NH]C=C(CCO[Si](C)(C)C(C)(C)C)C2=C12287.4Semi standard non polar33892256
5-Methoxytryptophol,1TBDMS,isomer #2COC1=CC=C2C(=C1)C(CCO)=CN2[Si](C)(C)C(C)(C)C2299.4Semi standard non polar33892256
5-Methoxytryptophol,2TBDMS,isomer #1COC1=CC=C2C(=C1)C(CCO[Si](C)(C)C(C)(C)C)=CN2[Si](C)(C)C(C)(C)C2529.5Semi standard non polar33892256
5-Methoxytryptophol,2TBDMS,isomer #1COC1=CC=C2C(=C1)C(CCO[Si](C)(C)C(C)(C)C)=CN2[Si](C)(C)C(C)(C)C2530.4Standard non polar33892256
5-Methoxytryptophol,2TBDMS,isomer #1COC1=CC=C2C(=C1)C(CCO[Si](C)(C)C(C)(C)C)=CN2[Si](C)(C)C(C)(C)C2505.0Standard polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 5-Methoxytryptophol GC-MS (Non-derivatized) - 70eV, Positivesplash10-03dj-0900000000-56fc4171bff27cc8b08f2017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 5-Methoxytryptophol GC-MS (1 TMS) - 70eV, Positivesplash10-00dj-4290000000-b6f1d2b77bcf63cdb2f62017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 5-Methoxytryptophol GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental LC-MS/MSLC-MS/MS Spectrum - 5-Methoxytryptophol Quattro_QQQ 10V, Positive-QTOF (Annotated)splash10-006x-0900000000-8a87d83f5ab6d4e9e2cc2012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - 5-Methoxytryptophol Quattro_QQQ 25V, Positive-QTOF (Annotated)splash10-053r-0900000000-c2439fe463c8095a7d482012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - 5-Methoxytryptophol Quattro_QQQ 40V, Positive-QTOF (Annotated)splash10-001i-0900000000-8eaf28224968f5678d872012-07-24HMDB team, MONAView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methoxytryptophol 10V, Positive-QTOFsplash10-00dl-0900000000-1daafd240067b254f72c2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methoxytryptophol 20V, Positive-QTOFsplash10-00di-0900000000-f1948c2696d6933b12882017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methoxytryptophol 40V, Positive-QTOFsplash10-00l7-0900000000-e7c232e2fb6c1faceb852017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methoxytryptophol 10V, Negative-QTOFsplash10-0006-0900000000-f761824cdb02ac2006c92017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methoxytryptophol 20V, Negative-QTOFsplash10-01ox-0900000000-10aea01d485547bbcdba2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methoxytryptophol 40V, Negative-QTOFsplash10-001i-0900000000-f47925a67fbbcd379d7c2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methoxytryptophol 10V, Positive-QTOFsplash10-006x-0900000000-7be83e05ff8f3addc0802021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methoxytryptophol 20V, Positive-QTOFsplash10-03kc-0900000000-8ea363f0b61f5e752cb02021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methoxytryptophol 40V, Positive-QTOFsplash10-001i-0900000000-d3b88ac758801b950a732021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methoxytryptophol 10V, Negative-QTOFsplash10-0006-0900000000-6c413ff2e4d57d5c760e2021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methoxytryptophol 20V, Negative-QTOFsplash10-0006-0900000000-f0a15e47d2011150926a2021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methoxytryptophol 40V, Negative-QTOFsplash10-052f-0900000000-bbc986579ed4331f0d9a2021-09-25Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Experimental 1D NMR1H NMR Spectrum (1D, 600 MHz, Methanol, experimental)2021-10-10Wishart LabView Spectrum
Experimental 2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, CD3OD, experimental)2012-12-05Wishart LabView Spectrum

IR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M-H]-)2023-02-03FELIX labView Spectrum
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+)2023-02-03FELIX labView Spectrum
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+)2023-02-03FELIX labView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
  • Cerebrospinal Fluid (CSF)
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.00009 +/- 0.000016 uMAdolescent (13-18 years old)MaleNormal details
BloodDetected and Quantified0.00009 +/- 0.000016 uMChildren (1-13 years old)FemaleNormal details
BloodDetected and Quantified0.00015 +/- 0.00002 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified0.00016 +/- 0.00003 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified0.00014 +/- 0.00001 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified0.00017 +/- 0.00003 uMAdult (>18 years old)MaleNormal details
BloodDetected and Quantified0.00014 +/- 0.000016 uMAdult (>18 years old)FemaleNormal details
BloodDetected and Quantified0.000058 +/- 0.00001 uMChildren (1-13 years old)MaleNormal details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
Cerebrospinal Fluid (CSF)Detected and Quantified0.03 +/- 0.22 (0.004 - 0.04) uMChildren (1-13 years old)BothLeukemia details
Cerebrospinal Fluid (CSF)Detected and Quantified0.02 +/- 0.022 (0 - 0.07) uMAdult (>18 years old)BothNeurological disorders (2 - 18 years old) details
Associated Disorders and Diseases
Disease References
Leukemia
  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 ]
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB022726
KNApSAcK IDNot Available
Chemspider ID12305
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkTryptophol
METLIN IDNot Available
PubChem Compound12835
PDB IDNot Available
ChEBI ID114833
Food Biomarker OntologyNot Available
VMH IDCE6205
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceTaborsky, Robert G.; Delvigs, Peter. Synthesis of some substituted tryptophols of possible physiological importance and a study with 3-(2-acetoxyethyl)-5-methoxyindole (5-methoxytryptophol O-acetate) on sexual maturation. J. Med. Chem., 1966, 9 (2), pp 251–254 DOI: 10.1021/jm00320a028
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Wurtman RJ, Ozaki Y: Physiological control of melatonin synthesis and secretion: mechanisms, generating rhythms in melatonin, methoxytryptophol, and arginine vasotocin levels and effects on the pineal of endogenous catecholamines, the estrous cycle, and environmental lighting. J Neural Transm Suppl. 1978;(13):59-70. [PubMed:288858 ]
  2. 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 ]
  3. Skene DJ, Vivien-Roels B, Sparks DL, Hunsaker JC, Pevet P, Ravid D, Swaab DF: Daily variation in the concentration of melatonin and 5-methoxytryptophol in the human pineal gland: effect of age and Alzheimer's disease. Brain Res. 1990 Sep 24;528(1):170-4. [PubMed:2245336 ]