Record Information
Version1.0
Creation Date2016-09-30 22:35:47 UTC
Update Date2020-06-04 20:20:11 UTC
BMDB IDBMDB0000738
Secondary Accession Numbers
  • BMDB00738
Metabolite Identification
Common NameIndole
DescriptionIndole, also known as 2,3-benzopyrrole or indol, belongs to the class of organic compounds known as indoles. Indoles are compounds containing an indole moiety, which consists of pyrrole ring fused to benzene to form 2,3-benzopyrrole. Indole exists in all living species, ranging from bacteria to plants to humans. Based on a literature review a significant number of articles have been published on Indole.
Structure
Thumb
Synonyms
ValueSource
2,3-BenzopyrroleChEBI
indolChEBI
1-AzaindeneHMDB
1-BenzazoleHMDB
Benzo[b]pyrroleHMDB
KetoleHMDB
IndoleHMDB
Chemical FormulaC8H7N
Average Molecular Weight117.1479
Monoisotopic Molecular Weight117.057849229
IUPAC Name1H-indole
Traditional Nameindole
CAS Registry Number120-72-9
SMILES
N1C=CC2=C1C=CC=C2
InChI Identifier
InChI=1S/C8H7N/c1-2-4-8-7(3-1)5-6-9-8/h1-6,9H
InChI KeySIKJAQJRHWYJAI-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as indoles. Indoles are compounds containing an indole moiety, which consists of pyrrole ring fused to benzene to form 2,3-benzopyrrole.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassIndoles and derivatives
Sub ClassIndoles
Direct ParentIndoles
Alternative Parents
Substituents
  • Indole
  • Benzenoid
  • Heteroaromatic compound
  • Pyrrole
  • Azacycle
  • Organic nitrogen compound
  • Organopnictogen compound
  • Hydrocarbon derivative
  • Organonitrogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
StatusDetected and Quantified
Origin
  • Endogenous
  • Exogenous
BiofunctionNot Available
ApplicationNot Available
Cellular locations
  • Cell membrane
  • Membrane
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point52.5 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility3.56 mg/mLNot Available
LogP2.14HANSCH,C ET AL. (1995)
Predicted Properties
PropertyValueSource
logP2.29ALOGPS
logP2.07ChemAxon
logS-1.3ALOGPS
pKa (Strongest Acidic)16.44ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count0ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area15.79 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity37.14 m³·mol⁻¹ChemAxon
Polarizability12.82 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash Key
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-014i-6900000000-09af4d0af4e5f7259a59View in MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-014i-9800000000-4160749bd673d5e00048View in MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-014i-9800000000-33bf321019a6a8e3401aView in MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-014i-6900000000-09af4d0af4e5f7259a59View in MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-014i-9800000000-4160749bd673d5e00048View in MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-014i-9800000000-33bf321019a6a8e3401aView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-014i-7900000000-2a9e4ccc61fee73a480eView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableView in JSpectraViewer
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-014i-0900000000-622dfed80152ea08d52aView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-0006-9100000000-2531cceca05522a5489eView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-014l-9000000000-5e07c15293929ff4440fView in MoNA
LC-MS/MSLC-MS/MS Spectrum - EI-B (MX-1303) , Positivesplash10-014i-6900000000-09af4d0af4e5f7259a59View in MoNA
LC-MS/MSLC-MS/MS Spectrum - EI-B (Unknown) , Positivesplash10-014i-9800000000-4160749bd673d5e00048View in MoNA
LC-MS/MSLC-MS/MS Spectrum - EI-B (HITACHI M-68) , Positivesplash10-014i-9800000000-33bf321019a6a8e3401aView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QTOF (UPLC Q-Tof Premier, Waters) , Positivesplash10-014i-0900000000-e6b11e225744a0d85f71View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QTOF , positivesplash10-014i-0900000000-e6b11e225744a0d85f71View in MoNA
LC-MS/MSLC-MS/MS Spectrum - ESI-ITFT , positivesplash10-014i-0900000000-7b49c1c370d7355c5e6fView in MoNA
LC-MS/MSLC-MS/MS Spectrum - ESI-ITFT , positivesplash10-0006-9000000000-050ef45f3ec404d7eb65View in MoNA
LC-MS/MSLC-MS/MS Spectrum - ESI-ITFT , positivesplash10-0006-9000000000-79ff95be504a5efad264View in MoNA
LC-MS/MSLC-MS/MS Spectrum - ESI-ITFT , positivesplash10-0006-9000000000-31ff8b484e0dc207fcc9View in MoNA
LC-MS/MSLC-MS/MS Spectrum - ESI-ITFT , positivesplash10-0006-9000000000-864a48552fea562fc370View in MoNA
LC-MS/MSLC-MS/MS Spectrum - ESI-ITFT , positivesplash10-014i-0900000000-bd82bfab4567619b5c41View in MoNA
LC-MS/MSLC-MS/MS Spectrum - ESI-ITFT , positivesplash10-014i-0900000000-6bff353534e6f5f9105bView in MoNA
LC-MS/MSLC-MS/MS Spectrum - ESI-ITFT , positivesplash10-014i-0900000000-c4e339d4a1d3fda0a949View in MoNA
LC-MS/MSLC-MS/MS Spectrum - ESI-ITFT , positivesplash10-014i-2900000000-100cd0cc67ac9eda3f4eView in MoNA
LC-MS/MSLC-MS/MS Spectrum - ESI-ITFT , positivesplash10-014l-5900000000-79447b563349d08aacc0View in MoNA
LC-MS/MSLC-MS/MS Spectrum - ESI-ITFT , positivesplash10-00kf-9800000000-a1ce5da5416e6d003ff9View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-014i-0900000000-aba5022e03d31dcbcc86View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-014i-0900000000-78c0f569df5b7f51c52cView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-014i-6900000000-bacb6e9a65a688229f96View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0900000000-e93b2f48040666dd7fe0View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-014i-0900000000-07d8a93ec0ace38ef3b3View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-014i-6900000000-8abfc9b162cc93f153acView in MoNA
MSMass Spectrum (Electron Ionization)splash10-014i-9700000000-3b1ec48b5bce79adb282View in MoNA
1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, experimental)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 400 MHz, CDCl3, experimental)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 25.16 MHz, CDCl3, experimental)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, CDCl3, experimental)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, CDCl3, experimental)Not AvailableView in JSpectraViewer
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)Not AvailableView in JSpectraViewer
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental)Not AvailableView in JSpectraViewer
Biological Properties
Cellular Locations
  • Cell membrane
  • Membrane
Biospecimen Locations
  • Epidermis
  • Fibroblasts
  • Intestine
  • Neuron
  • Ruminal Fluid
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
EpidermisExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
FibroblastsExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
IntestineExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
NeuronExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
Ruminal FluidDetected and Quantified200 +/- 100 uMNot SpecifiedBoth
Normal
details
Abnormal Concentrations
Not Available
HMDB IDHMDB0000738
DrugBank IDDB04532
Phenol Explorer Compound IDNot Available
FooDB IDFDB012008
KNApSAcK IDC00001418
Chemspider ID776
KEGG Compound IDC00463
BioCyc IDINDOLE
BiGG IDNot Available
Wikipedia LinkIndole
METLIN ID286
PubChem Compound798
PDB IDNot Available
ChEBI ID16881
References
Synthesis ReferenceGrigoleit, Georg; Oberkobusch, Rudolf; Collin, Gerd. Indole from 2-ethylaniline. Ger. Offen. (1973), 6 pp.
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available