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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2012-09-11 17:44:00 UTC
Update Date2023-02-21 17:20:48 UTC
HMDB IDHMDB0031551
Secondary Accession Numbers
  • HMDB31551
Metabolite Identification
Common Name5-Methyl-5-hexen-2-one
Description5-Methyl-5-hexen-2-one belongs to the class of organic compounds known as ketones. These are organic compounds in which a carbonyl group is bonded to two carbon atoms R2C=O (neither R may be a hydrogen atom). Ketones that have one or more alpha-hydrogen atoms undergo keto-enol tautomerization, the tautomer being an enol. 5-Methyl-5-hexen-2-one is a foliage, green, and vegetable tasting compound. Based on a literature review very few articles have been published on 5-Methyl-5-hexen-2-one.
Structure
Data?1677000048
Synonyms
ValueSource
4-Acetyl-2-methyl-1-buteneHMDB
FEMA 3365HMDB
MethallylacetoneHMDB
Chemical FormulaC7H12O
Average Molecular Weight112.1696
Monoisotopic Molecular Weight112.088815006
IUPAC Name5-methylhex-5-en-2-one
Traditional Name5-hexen-2-one, 5-methyl-
CAS Registry Number3240-09-3
SMILES
CC(=C)CCC(C)=O
InChI Identifier
InChI=1S/C7H12O/c1-6(2)4-5-7(3)8/h1,4-5H2,2-3H3
InChI KeyVBCIOOKAKHGVMI-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as ketones. These are organic compounds in which a carbonyl group is bonded to two carbon atoms R2C=O (neither R may be a hydrogen atom). Ketones that have one or more alpha-hydrogen atoms undergo keto-enol tautomerization, the tautomer being an enol.
KingdomOrganic compounds
Super ClassOrganic oxygen compounds
ClassOrganooxygen compounds
Sub ClassCarbonyl compounds
Direct ParentKetones
Alternative Parents
Substituents
  • Ketone
  • Organic oxide
  • Hydrocarbon derivative
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External DescriptorsNot Available
Ontology
Physiological effect
Disposition
Process
Role
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 Solubility7.53 g/LALOGPS
logP1.42ALOGPS
logP1.64ChemAxon
logS-1.2ALOGPS
pKa (Strongest Acidic)19.6ChemAxon
pKa (Strongest Basic)-7.3ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count1ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area17.07 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity34.35 m³·mol⁻¹ChemAxon
Polarizability13.32 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+125.85631661259
DarkChem[M-H]-120.44831661259
DeepCCS[M+H]+128.22930932474
DeepCCS[M-H]-126.15930932474
DeepCCS[M-2H]-161.89830932474
DeepCCS[M+Na]+136.62330932474
AllCCS[M+H]+126.432859911
AllCCS[M+H-H2O]+122.032859911
AllCCS[M+NH4]+130.432859911
AllCCS[M+Na]+131.632859911
AllCCS[M-H]-127.932859911
AllCCS[M+Na-2H]-131.232859911
AllCCS[M+HCOO]-134.832859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
5-Methyl-5-hexen-2-oneCC(=C)CCC(C)=O1268.7Standard polar33892256
5-Methyl-5-hexen-2-oneCC(=C)CCC(C)=O856.7Standard non polar33892256
5-Methyl-5-hexen-2-oneCC(=C)CCC(C)=O849.2Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
5-Methyl-5-hexen-2-one,1TMS,isomer #1C=C(C)CC=C(C)O[Si](C)(C)C1073.6Semi standard non polar33892256
5-Methyl-5-hexen-2-one,1TMS,isomer #1C=C(C)CC=C(C)O[Si](C)(C)C1010.6Standard non polar33892256
5-Methyl-5-hexen-2-one,1TMS,isomer #2C=C(C)CCC(=C)O[Si](C)(C)C1013.2Semi standard non polar33892256
5-Methyl-5-hexen-2-one,1TMS,isomer #2C=C(C)CCC(=C)O[Si](C)(C)C1044.8Standard non polar33892256
5-Methyl-5-hexen-2-one,1TBDMS,isomer #1C=C(C)CC=C(C)O[Si](C)(C)C(C)(C)C1275.7Semi standard non polar33892256
5-Methyl-5-hexen-2-one,1TBDMS,isomer #1C=C(C)CC=C(C)O[Si](C)(C)C(C)(C)C1242.3Standard non polar33892256
5-Methyl-5-hexen-2-one,1TBDMS,isomer #2C=C(C)CCC(=C)O[Si](C)(C)C(C)(C)C1216.9Semi standard non polar33892256
5-Methyl-5-hexen-2-one,1TBDMS,isomer #2C=C(C)CCC(=C)O[Si](C)(C)C(C)(C)C1245.8Standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 5-Methyl-5-hexen-2-one GC-MS (Non-derivatized) - 70eV, Positivesplash10-0006-9000000000-8c83d2c0592f4e3b61792017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 5-Methyl-5-hexen-2-one GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 5-Methyl-5-hexen-2-one 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 - 5-Methyl-5-hexen-2-one 10V, Positive-QTOFsplash10-03dj-9700000000-9b0bc608a92c67d390af2016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methyl-5-hexen-2-one 20V, Positive-QTOFsplash10-01ot-9300000000-0c9004fccd0c465d7e112016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methyl-5-hexen-2-one 40V, Positive-QTOFsplash10-0fvj-9000000000-e938e1ea0ea387d5ffb22016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methyl-5-hexen-2-one 10V, Negative-QTOFsplash10-03di-1900000000-53eb8ac1db785070dd622016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methyl-5-hexen-2-one 20V, Negative-QTOFsplash10-03di-3900000000-45d6973d983c56518ed62016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methyl-5-hexen-2-one 40V, Negative-QTOFsplash10-0005-9000000000-1dfa32a3759b14f0bc862016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methyl-5-hexen-2-one 10V, Negative-QTOFsplash10-03di-0900000000-6e2ef191e20e94bd344c2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methyl-5-hexen-2-one 20V, Negative-QTOFsplash10-03dl-9700000000-8769f7bf17ec3fbb01532021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methyl-5-hexen-2-one 40V, Negative-QTOFsplash10-002g-9000000000-a57bb5f213eefb27cf5e2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methyl-5-hexen-2-one 10V, Positive-QTOFsplash10-0a4j-9000000000-f83e96accaecd65573d32021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methyl-5-hexen-2-one 20V, Positive-QTOFsplash10-014i-9000000000-2bdb57ee3ea45a0259f02021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5-Methyl-5-hexen-2-one 40V, Positive-QTOFsplash10-0173-9000000000-de89000fd20e0e9b31aa2021-09-23Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Predicted 1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-09-16Wishart LabView Spectrum

IR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+)2023-02-04FELIX labView Spectrum
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+)2023-02-04FELIX labView Spectrum
Biological Properties
Cellular Locations
  • Cytoplasm
  • Extracellular
  • Membrane
Biospecimen LocationsNot Available
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB008163
KNApSAcK IDNot Available
Chemspider ID198976
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound228604
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 References
  1. (). Yannai, Shmuel. (2004) Dictionary of food compounds with CD-ROM: Additives, flavors, and ingredients. Boca Raton: Chapman & Hall/CRC.. .