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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2013-07-04 18:56:27 UTC
Update Date2021-09-14 15:48:21 UTC
HMDB IDHMDB0060742
Secondary Accession Numbers
  • HMDB60742
Metabolite Identification
Common Name3-Hydroxymelatonin
Description3-Hydroxymelatonin belongs to the class of organic compounds known as indolines. Indolines are compounds containing an indole moiety, which consists of pyrrolidine ring fused to benzene to form 2,3-dihydroindole. Melatonin Listen/ˌmɛləˈtoʊnɪn/, also known chemically as N-acetyl-5-methoxytryptamine, is a naturally occurring compound found in animals, plants, and microbes. In animals, circulating levels of the hormone melatonin vary in a daily cycle, thereby allowing the entrainment of the circadian rhythms of several biological functions. 3-Hydroxymelatonin is a strong basic compound (based on its pKa). 3-Hydroxymelatonin is a metabolite of melatonin.
Structure
Data?1563866099
SynonymsNot Available
Chemical FormulaC13H18N2O3
Average Molecular Weight250.2936
Monoisotopic Molecular Weight250.131742452
IUPAC NameN-[2-(3-hydroxy-5-methoxy-2,3-dihydro-1H-indol-3-yl)ethyl]ethanimidic acid
Traditional NameN-[2-(3-hydroxy-5-methoxy-1,2-dihydroindol-3-yl)ethyl]ethanimidic acid
CAS Registry NumberNot Available
SMILES
COC1=CC2=C(NCC2(O)CCN=C(C)O)C=C1
InChI Identifier
InChI=1S/C13H18N2O3/c1-9(16)14-6-5-13(17)8-15-12-4-3-10(18-2)7-11(12)13/h3-4,7,15,17H,5-6,8H2,1-2H3,(H,14,16)
InChI KeyDWMWOUAIGKAJNF-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as indolines. Indolines are compounds containing an indole moiety, which consists of pyrrolidine ring fused to benzene to form 2,3-dihydroindole.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassIndoles and derivatives
Sub ClassIndolines
Direct ParentIndolines
Alternative Parents
Substituents
  • Dihydroindole
  • Anisole
  • Alkyl aryl ether
  • Secondary aliphatic/aromatic amine
  • Aralkylamine
  • Benzenoid
  • Tertiary alcohol
  • 1,2-aminoalcohol
  • Organic 1,3-dipolar compound
  • Propargyl-type 1,3-dipolar organic compound
  • Secondary amine
  • Azacycle
  • Carboximidic acid
  • Carboximidic acid derivative
  • Ether
  • Organopnictogen compound
  • Organic oxygen compound
  • Organonitrogen compound
  • Organooxygen compound
  • Organic nitrogen compound
  • Amine
  • Alcohol
  • Hydrocarbon derivative
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateNot Available
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 Solubility0.49 g/LALOGPS
logP0.9ALOGPS
logP0.23ChemAxon
logS-2.7ALOGPS
pKa (Strongest Acidic)7.54ChemAxon
pKa (Strongest Basic)4.85ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area74.08 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity69.9 m³·mol⁻¹ChemAxon
Polarizability27.13 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]+158.16331661259
DarkChem[M-H]-156.36931661259
DeepCCS[M+H]+158.83730932474
DeepCCS[M-H]-156.47930932474
DeepCCS[M-2H]-189.36630932474
DeepCCS[M+Na]+164.9330932474
AllCCS[M+H]+157.632859911
AllCCS[M+H-H2O]+153.932859911
AllCCS[M+NH4]+161.032859911
AllCCS[M+Na]+161.932859911
AllCCS[M-H]-161.532859911
AllCCS[M+Na-2H]-161.732859911
AllCCS[M+HCOO]-162.032859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
3-HydroxymelatoninCOC1=CC2=C(NCC2(O)CCN=C(C)O)C=C13709.6Standard polar33892256
3-HydroxymelatoninCOC1=CC2=C(NCC2(O)CCN=C(C)O)C=C12371.5Standard non polar33892256
3-HydroxymelatoninCOC1=CC2=C(NCC2(O)CCN=C(C)O)C=C12432.8Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
3-Hydroxymelatonin,1TMS,isomer #1COC1=CC=C2NCC(CCN=C(C)O)(O[Si](C)(C)C)C2=C12355.7Semi standard non polar33892256
3-Hydroxymelatonin,1TMS,isomer #2COC1=CC=C2NCC(O)(CCN=C(C)O[Si](C)(C)C)C2=C12338.8Semi standard non polar33892256
3-Hydroxymelatonin,1TMS,isomer #3COC1=CC=C2C(=C1)C(O)(CCN=C(C)O)CN2[Si](C)(C)C2416.3Semi standard non polar33892256
3-Hydroxymelatonin,2TMS,isomer #1COC1=CC=C2NCC(CCN=C(C)O[Si](C)(C)C)(O[Si](C)(C)C)C2=C12393.6Semi standard non polar33892256
3-Hydroxymelatonin,2TMS,isomer #2COC1=CC=C2C(=C1)C(CCN=C(C)O)(O[Si](C)(C)C)CN2[Si](C)(C)C2400.8Semi standard non polar33892256
3-Hydroxymelatonin,2TMS,isomer #3COC1=CC=C2C(=C1)C(O)(CCN=C(C)O[Si](C)(C)C)CN2[Si](C)(C)C2375.2Semi standard non polar33892256
3-Hydroxymelatonin,3TMS,isomer #1COC1=CC=C2C(=C1)C(CCN=C(C)O[Si](C)(C)C)(O[Si](C)(C)C)CN2[Si](C)(C)C2381.1Semi standard non polar33892256
3-Hydroxymelatonin,3TMS,isomer #1COC1=CC=C2C(=C1)C(CCN=C(C)O[Si](C)(C)C)(O[Si](C)(C)C)CN2[Si](C)(C)C2314.0Standard non polar33892256
3-Hydroxymelatonin,3TMS,isomer #1COC1=CC=C2C(=C1)C(CCN=C(C)O[Si](C)(C)C)(O[Si](C)(C)C)CN2[Si](C)(C)C2596.6Standard polar33892256
3-Hydroxymelatonin,1TBDMS,isomer #1COC1=CC=C2NCC(CCN=C(C)O)(O[Si](C)(C)C(C)(C)C)C2=C12586.7Semi standard non polar33892256
3-Hydroxymelatonin,1TBDMS,isomer #2COC1=CC=C2NCC(O)(CCN=C(C)O[Si](C)(C)C(C)(C)C)C2=C12592.2Semi standard non polar33892256
3-Hydroxymelatonin,1TBDMS,isomer #3COC1=CC=C2C(=C1)C(O)(CCN=C(C)O)CN2[Si](C)(C)C(C)(C)C2633.0Semi standard non polar33892256
3-Hydroxymelatonin,2TBDMS,isomer #1COC1=CC=C2NCC(CCN=C(C)O[Si](C)(C)C(C)(C)C)(O[Si](C)(C)C(C)(C)C)C2=C12783.9Semi standard non polar33892256
3-Hydroxymelatonin,2TBDMS,isomer #2COC1=CC=C2C(=C1)C(CCN=C(C)O)(O[Si](C)(C)C(C)(C)C)CN2[Si](C)(C)C(C)(C)C2850.5Semi standard non polar33892256
3-Hydroxymelatonin,2TBDMS,isomer #3COC1=CC=C2C(=C1)C(O)(CCN=C(C)O[Si](C)(C)C(C)(C)C)CN2[Si](C)(C)C(C)(C)C2836.0Semi standard non polar33892256
3-Hydroxymelatonin,3TBDMS,isomer #1COC1=CC=C2C(=C1)C(CCN=C(C)O[Si](C)(C)C(C)(C)C)(O[Si](C)(C)C(C)(C)C)CN2[Si](C)(C)C(C)(C)C3024.9Semi standard non polar33892256
3-Hydroxymelatonin,3TBDMS,isomer #1COC1=CC=C2C(=C1)C(CCN=C(C)O[Si](C)(C)C(C)(C)C)(O[Si](C)(C)C(C)(C)C)CN2[Si](C)(C)C(C)(C)C2933.5Standard non polar33892256
3-Hydroxymelatonin,3TBDMS,isomer #1COC1=CC=C2C(=C1)C(CCN=C(C)O[Si](C)(C)C(C)(C)C)(O[Si](C)(C)C(C)(C)C)CN2[Si](C)(C)C(C)(C)C2898.8Standard polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 3-Hydroxymelatonin GC-MS (Non-derivatized) - 70eV, Positivesplash10-001u-7960000000-23ab131bcce0e20f63092017-09-20Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 3-Hydroxymelatonin GC-MS (2 TMS) - 70eV, Positivesplash10-004i-7449000000-5b21c4e8d77836b42c902017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 3-Hydroxymelatonin GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Hydroxymelatonin 10V, Positive-QTOFsplash10-0pb9-0190000000-06521ff602616ccbb8c22017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Hydroxymelatonin 20V, Positive-QTOFsplash10-0a4l-1960000000-1b8cbdb62f5e4bdd0b542017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Hydroxymelatonin 40V, Positive-QTOFsplash10-01pc-2900000000-3111599ee44fd43addff2017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Hydroxymelatonin 10V, Negative-QTOFsplash10-0002-0290000000-f73bee63e81bcca86f3b2017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Hydroxymelatonin 20V, Negative-QTOFsplash10-0a4i-3980000000-f5a42f5d4dcf35b915202017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Hydroxymelatonin 40V, Negative-QTOFsplash10-0a4l-9500000000-76c68b5db7fdc13ddcee2017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Hydroxymelatonin 10V, Positive-QTOFsplash10-0udl-0590000000-4901f82985f7dc25b4102021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Hydroxymelatonin 20V, Positive-QTOFsplash10-03di-0930000000-69732fb242d132965ebe2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Hydroxymelatonin 40V, Positive-QTOFsplash10-00di-1900000000-cd245581f7a9206d34f32021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Hydroxymelatonin 10V, Negative-QTOFsplash10-052b-0090000000-cb5e935bc3f898ff3c3d2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Hydroxymelatonin 20V, Negative-QTOFsplash10-0a4i-0790000000-2f3c2cf16e8dbac312482021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Hydroxymelatonin 40V, Negative-QTOFsplash10-0006-7910000000-0c652c828a3df07414992021-10-12Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Cytoplasm
Biospecimen Locations
  • Blood
  • Urine
Tissue Locations
  • Kidney
  • Liver
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableNormal
      Not Available
details
UrineExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableNormal
      Not Available
details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound131769936
PDB IDNot Available
ChEBI IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available