Record Information
Version1.0
Creation Date2016-09-30 23:03:11 UTC
Update Date2020-06-04 20:44:37 UTC
BMDB IDBMDB0003227
Secondary Accession Numbers
  • BMDB03227
Metabolite Identification
Common NameMethanethiol
DescriptionMethanethiol, also known as methylmercaptan or CH3SH, belongs to the class of organic compounds known as alkylthiols. These are organic compounds containing the thiol functional group linked to an alkyl chain. Methanethiol exists as a solid, possibly soluble (in water), and an extremely weak basic (essentially neutral) compound (based on its pKa) molecule. Methanethiol exists in all living species, ranging from bacteria to humans.
Structure
Thumb
Synonyms
ValueSource
MethylmercaptanChEBI
CH3SHHMDB
Mercaptan methyliqueHMDB
MercaptomethaneHMDB
MethanethioleHMDB
MethanthiolHMDB
MethvtioloHMDB
Methyl mercaptanHMDB
Methyl sulfhydrateHMDB
Methyl thioalcoholHMDB
MethylmercaptaanHMDB
MetilmercaptanoHMDB
ThiomethaneHMDB
ThiomethanolHMDB
Methylmercaptan, lead (2+) saltMeSH, HMDB
MethanethiolateMeSH, HMDB
Methylmercaptan, sodium saltMeSH, HMDB
Methylmercaptan, mercury (2+) saltMeSH, HMDB
Chemical FormulaCH4S
Average Molecular Weight48.107
Monoisotopic Molecular Weight48.003370818
IUPAC Namemethanethiol
Traditional Namemethanethiol
CAS Registry Number74-93-1
SMILES
CS
InChI Identifier
InChI=1S/CH4S/c1-2/h2H,1H3
InChI KeyLSDPWZHWYPCBBB-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
  • Hydrocarbon derivative
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
StatusDetected and Quantified
Origin
  • Endogenous
BiofunctionNot Available
ApplicationNot Available
Cellular locationsNot Available
Physical Properties
StateLiquid
Experimental Properties
PropertyValueReference
Melting Point-123 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility15.4 mg/mL at 25 °CNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP0.73ALOGPS
logP0.84ChemAxon
logS-0.38ALOGPS
pKa (Strongest Acidic)10.34ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count0ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area0 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity14.24 m³·mol⁻¹ChemAxon
Polarizability5.33 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Fibroblasts
  • Intestine
  • Milk
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
FibroblastsExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
IntestineExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
MilkDetected and Quantified0.0353 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified0.0411 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified0.0762 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified0.0764 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified0.128 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified0.0996 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified0.00878 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified0.0925 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified0.0418 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified0.103 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified0.345 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified0.512 uMNot SpecifiedNot Specified
Normal
details
Abnormal Concentrations
Not Available
HMDB IDHMDB0003227
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB011886
KNApSAcK IDC00001258
Chemspider ID855
KEGG Compound IDC00409
BioCyc IDCPD-7671
BiGG IDNot Available
Wikipedia LinkMethanethiol
METLIN ID3204
PubChem Compound878
PDB IDNot Available
ChEBI ID16007
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Vazquez-Landaverde PA, Torres JA, Qian MC: Quantification of trace volatile sulfur compounds in milk by solid-phase microextraction and gas chromatography-pulsed flame photometric detection. J Dairy Sci. 2006 Aug;89(8):2919-27. doi: 10.3168/jds.S0022-0302(06)72564-4. [PubMed:16840607 ]