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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2012-09-11 20:07:31 UTC
Update Date2022-03-07 02:54:23 UTC
HMDB IDHMDB0035176
Secondary Accession Numbers
  • HMDB35176
Metabolite Identification
Common Name3-Mercapto-2-methylpentanal
Description3-Mercapto-2-methylpentanal, also known as 2-methyl-3-sulphanylpentanal, belongs to the class of organic compounds known as alkylthiols. These are organic compounds containing the thiol functional group linked to an alkyl chain. 3-Mercapto-2-methylpentanal is an onion and sulfurous tasting compound. 3-Mercapto-2-methylpentanal has been detected, but not quantified in, several different foods, such as green onion, garden onions (Allium cepa), onion-family vegetables, red onion, and welsh onions (Allium fistulosum). This could make 3-mercapto-2-methylpentanal a potential biomarker for the consumption of these foods. Based on a literature review very few articles have been published on 3-Mercapto-2-methylpentanal.
Structure
Data?1563862678
Synonyms
ValueSource
2-Methyl-3-sulphanylpentanalHMDB
Chemical FormulaC6H12OS
Average Molecular Weight132.224
Monoisotopic Molecular Weight132.060885696
IUPAC Name2-methyl-3-sulfanylpentanal
Traditional Name2-methyl-3-sulfanylpentanal
CAS Registry Number227456-28-2
SMILES
CCC(S)C(C)C=O
InChI Identifier
InChI=1S/C6H12OS/c1-3-6(8)5(2)4-7/h4-6,8H,3H2,1-2H3
InChI KeyFSAGSGCELJTQFN-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as alkylthiols. These are organic compounds containing the thiol functional group linked to an alkyl chain.
KingdomOrganic compounds
Super ClassOrganosulfur compounds
ClassThiols
Sub ClassAlkylthiols
Direct ParentAlkylthiols
Alternative Parents
Substituents
  • Alkylthiol
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Carbonyl group
  • Aldehyde
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External DescriptorsNot Available
Ontology
Physiological effect
Disposition
ProcessNot Available
Role
Physical Properties
StateNot Available
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling Point98.00 to 100.00 °C. @ 10.00 mm HgThe Good Scents Company Information System
Water Solubility3912 mg/L @ 25 °C (est)The Good Scents Company Information System
LogP1.673 (est)The Good Scents Company Information System
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility0.92 g/LALOGPS
logP2.29ALOGPS
logP1.67ChemAxon
logS-2.2ALOGPS
pKa (Strongest Acidic)9.98ChemAxon
pKa (Strongest Basic)-7ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count1ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area17.07 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity37.72 m³·mol⁻¹ChemAxon
Polarizability14.83 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]+129.47931661259
DarkChem[M-H]-123.52931661259
DeepCCS[M+H]+132.81430932474
DeepCCS[M-H]-130.46130932474
DeepCCS[M-2H]-166.76830932474
DeepCCS[M+Na]+141.48130932474
AllCCS[M+H]+131.332859911
AllCCS[M+H-H2O]+127.232859911
AllCCS[M+NH4]+135.132859911
AllCCS[M+Na]+136.232859911
AllCCS[M-H]-134.632859911
AllCCS[M+Na-2H]-138.032859911
AllCCS[M+HCOO]-141.832859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
3-Mercapto-2-methylpentanalCCC(S)C(C)C=O1547.9Standard polar33892256
3-Mercapto-2-methylpentanalCCC(S)C(C)C=O983.0Standard non polar33892256
3-Mercapto-2-methylpentanalCCC(S)C(C)C=O1000.5Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
3-Mercapto-2-methylpentanal,1TMS,isomer #1CCC(S[Si](C)(C)C)C(C)C=O1215.7Semi standard non polar33892256
3-Mercapto-2-methylpentanal,1TMS,isomer #1CCC(S[Si](C)(C)C)C(C)C=O1200.2Standard non polar33892256
3-Mercapto-2-methylpentanal,1TMS,isomer #2CCC(S)C(C)=CO[Si](C)(C)C1219.1Semi standard non polar33892256
3-Mercapto-2-methylpentanal,1TMS,isomer #2CCC(S)C(C)=CO[Si](C)(C)C1143.9Standard non polar33892256
3-Mercapto-2-methylpentanal,2TMS,isomer #1CCC(S[Si](C)(C)C)C(C)=CO[Si](C)(C)C1384.6Semi standard non polar33892256
3-Mercapto-2-methylpentanal,2TMS,isomer #1CCC(S[Si](C)(C)C)C(C)=CO[Si](C)(C)C1367.5Standard non polar33892256
3-Mercapto-2-methylpentanal,1TBDMS,isomer #1CCC(S[Si](C)(C)C(C)(C)C)C(C)C=O1441.4Semi standard non polar33892256
3-Mercapto-2-methylpentanal,1TBDMS,isomer #1CCC(S[Si](C)(C)C(C)(C)C)C(C)C=O1452.7Standard non polar33892256
3-Mercapto-2-methylpentanal,1TBDMS,isomer #2CCC(S)C(C)=CO[Si](C)(C)C(C)(C)C1436.3Semi standard non polar33892256
3-Mercapto-2-methylpentanal,1TBDMS,isomer #2CCC(S)C(C)=CO[Si](C)(C)C(C)(C)C1385.5Standard non polar33892256
3-Mercapto-2-methylpentanal,2TBDMS,isomer #1CCC(S[Si](C)(C)C(C)(C)C)C(C)=CO[Si](C)(C)C(C)(C)C1812.3Semi standard non polar33892256
3-Mercapto-2-methylpentanal,2TBDMS,isomer #1CCC(S[Si](C)(C)C(C)(C)C)C(C)=CO[Si](C)(C)C(C)(C)C1808.9Standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 3-Mercapto-2-methylpentanal GC-MS (Non-derivatized) - 70eV, Positivesplash10-056r-9300000000-760fb299538fc8ad571b2017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 3-Mercapto-2-methylpentanal 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-Mercapto-2-methylpentanal 10V, Positive-QTOFsplash10-001i-5900000000-e06c94d331678356644a2016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 20V, Positive-QTOFsplash10-003r-9500000000-0402a01bd7916775ef792016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 40V, Positive-QTOFsplash10-00fu-9000000000-e4989857df44fee7152e2016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 10V, Negative-QTOFsplash10-001j-9800000000-008efcde2f8efe30869a2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 20V, Negative-QTOFsplash10-001j-9700000000-0387c5c19293a179e3aa2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 40V, Negative-QTOFsplash10-0a5c-9000000000-1d0982d912380488b9622016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 10V, Positive-QTOFsplash10-0zmi-9700000000-8c4c4a66b1e72c493aa12021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 20V, Positive-QTOFsplash10-004i-9100000000-8fc6813e40a4aeea9ba22021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 40V, Positive-QTOFsplash10-0006-9000000000-0919682d94cfca5ea3ba2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 10V, Negative-QTOFsplash10-001i-3900000000-8b6688d71dcb4b902bb02021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 20V, Negative-QTOFsplash10-0089-9000000000-21b50ec39403f6b0359b2021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 40V, Negative-QTOFsplash10-001i-9000000000-9f164fc99e4cea87e08e2021-09-23Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Cytoplasm
  • Extracellular
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 IDFDB013816
KNApSAcK IDNot Available
Chemspider ID459682
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound527435
PDB IDNot Available
ChEBI IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDrw1352731
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.. .