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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-10-01 18:04:09 UTC
Update Date2022-09-22 18:35:14 UTC
HMDB IDHMDB0304943
Secondary Accession NumbersNone
Metabolite Identification
Common Name3-Methyloxindole
Description3-methyloxindole 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. 3-methyloxindole is an extremely weak basic (essentially neutral) compound (based on its pKa).
Structure
Thumb
Synonyms
ValueSource
1,3-Dihydro-3-methyl-2H-indol-2-oneChEBI
3-Methyl-1,3-dihydroindol-2-oneChEBI
3-Methyl-2-oxindoleMeSH
Chemical FormulaC9H9NO
Average Molecular Weight147.177
Monoisotopic Molecular Weight147.068413914
IUPAC Name3-methyl-2,3-dihydro-1H-indol-2-one
Traditional Name3-methyloxindole
CAS Registry NumberNot Available
SMILES
CC1C(=O)NC2=CC=CC=C12
InChI Identifier
InChI=1S/C9H9NO/c1-6-7-4-2-3-5-8(7)10-9(6)11/h2-6H,1H3,(H,10,11)
InChI KeyBBZCPUCZKLTAJQ-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
  • Benzenoid
  • Carboxamide group
  • Lactam
  • Secondary carboxylic acid amide
  • Azacycle
  • Carboxylic acid derivative
  • Organic oxygen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Carbonyl group
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Organopnictogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
DispositionNot Available
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
logP1.46ALOGPS
logP1.62ChemAxon
logS-1.7ALOGPS
pKa (Strongest Acidic)12.31ChemAxon
pKa (Strongest Basic)-5.1ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count1ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area29.1 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity44.16 m³·mol⁻¹ChemAxon
Polarizability15.61 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
AllCCS[M+H]+129.2332859911
AllCCS[M+H-H2O]+124.46532859911
AllCCS[M+Na]+134.96132859911
AllCCS[M+NH4]+133.67732859911
AllCCS[M-H]-129.93332859911
AllCCS[M+Na-2H]-130.83432859911
AllCCS[M+HCOO]-131.8932859911
DeepCCS[M-2H]-162.86930932474
DeepCCS[M+Na]+138.21230932474

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Predicted by Siyang on May 30, 202210.7875 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20221.54 minutes32390414
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid1514.9 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid351.0 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid116.1 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid205.6 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid64.6 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid356.0 seconds40023050
BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid585.3 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)109.2 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid837.6 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid295.2 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid1106.1 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid282.4 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid303.8 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate388.4 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA232.2 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water103.4 seconds40023050

Predicted Kovats Retention Indices

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
3-Methyloxindole,1TMS,isomer #1CC1C(=O)N([Si](C)(C)C)C2=CC=CC=C211498.9Semi standard non polar33892256
3-Methyloxindole,1TMS,isomer #1CC1C(=O)N([Si](C)(C)C)C2=CC=CC=C211552.9Standard non polar33892256
3-Methyloxindole,1TMS,isomer #1CC1C(=O)N([Si](C)(C)C)C2=CC=CC=C211838.1Standard polar33892256
3-Methyloxindole,1TBDMS,isomer #1CC1C(=O)N([Si](C)(C)C(C)(C)C)C2=CC=CC=C211740.0Semi standard non polar33892256
3-Methyloxindole,1TBDMS,isomer #1CC1C(=O)N([Si](C)(C)C(C)(C)C)C2=CC=CC=C211790.4Standard non polar33892256
3-Methyloxindole,1TBDMS,isomer #1CC1C(=O)N([Si](C)(C)C(C)(C)C)C2=CC=CC=C211979.6Standard polar33892256
Spectra

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Methyloxindole 10V, Positive-QTOFsplash10-0002-0900000000-7b55d189e95922af9f372021-10-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Methyloxindole 20V, Positive-QTOFsplash10-0002-0900000000-cea9330d77eab03f33942021-10-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Methyloxindole 40V, Positive-QTOFsplash10-0ufr-9700000000-f73f909d72f005c95b1e2021-10-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Methyloxindole 10V, Negative-QTOFsplash10-0002-0900000000-46c7adeffe51c18a37d62021-10-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Methyloxindole 20V, Negative-QTOFsplash10-0002-3900000000-ca8edd5d21083ea3a52e2021-10-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Methyloxindole 40V, Negative-QTOFsplash10-0006-9000000000-f3f899006742cd993cf22021-10-22Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot QuantifiedAdult (>18 years old)BothAsthma details
UrineDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothAsthma details
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 IDC02366
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound150923
PDB IDNot Available
ChEBI ID17397
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 References
  1. National Institute of Environmental Health Science (NIEHS) [Link]