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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2012-09-11 22:24:40 UTC
Update Date2023-02-21 17:25:40 UTC
HMDB IDHMDB0037169
Secondary Accession Numbers
  • HMDB37169
Metabolite Identification
Common NamePyrazineethanethiol
DescriptionPyrazineethanethiol belongs to the class of organic compounds known as pyrazines. Pyrazines are compounds containing a pyrazine ring, which is a six-member aromatic heterocycle, that consists of two nitrogen atoms (at positions 1 and 4) and four carbon atoms. Pyrazineethanethiol is a cabbage, meaty, and sulfurous tasting compound. Based on a literature review very few articles have been published on Pyrazineethanethiol.
Structure
Data?1677000340
Synonyms
ValueSource
2-(2-Mercaptoethyl)pyrazineHMDB
2-Pyrazin-2-ylethanethiolHMDB
2-PyrazineethanethiolHMDB
2-Pyrazinyl-ethanethiolHMDB
2-PyrazinylethanethiolHMDB
2-PyrazinylethylmercaptanHMDB
FEMA 3230HMDB
MercaptoethylpyrazineHMDB
Pyrazine ethanethiolHMDB
Pyrazinyl ethanethiolHMDB
Chemical FormulaC6H8N2S
Average Molecular Weight140.206
Monoisotopic Molecular Weight140.040818956
IUPAC Name2-(pyrazin-2-yl)ethane-1-thiol
Traditional Namepyrazineethanethiol
CAS Registry Number35250-53-4
SMILES
SCCC1=CN=CC=N1
InChI Identifier
InChI=1S/C6H8N2S/c9-4-1-6-5-7-2-3-8-6/h2-3,5,9H,1,4H2
InChI KeyQKVWBAMZPUHCMO-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as pyrazines. Pyrazines are compounds containing a pyrazine ring, which is a six-member aromatic heterocycle, that consists of two nitrogen atoms (at positions 1 and 4) and four carbon atoms.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassDiazines
Sub ClassPyrazines
Direct ParentPyrazines
Alternative Parents
Substituents
  • Pyrazine
  • Heteroaromatic compound
  • Azacycle
  • Alkylthiol
  • Organic nitrogen compound
  • Organopnictogen compound
  • Hydrocarbon derivative
  • Organosulfur compound
  • Organonitrogen compound
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External DescriptorsNot Available
Ontology
Physiological effect
Disposition
ProcessNot Available
Role
Physical Properties
StateNot Available
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling Point105.00 to 110.00 °C. @ 20.00 mm HgThe Good Scents Company Information System
Water Solubility0The Good Scents Company Information System
LogP0.769 (est)The Good Scents Company Information System
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility1.22 g/LALOGPS
logP1.03ALOGPS
logP0.34ChemAxon
logS-2.1ALOGPS
pKa (Strongest Acidic)10.15ChemAxon
pKa (Strongest Basic)1.14ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area25.78 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity38.77 m³·mol⁻¹ChemAxon
Polarizability14.78 ųChemAxon
Number of Rings1ChemAxon
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]+126.39631661259
DarkChem[M-H]-123.6231661259
DeepCCS[M+H]+124.98830932474
DeepCCS[M-H]-122.06130932474
DeepCCS[M-2H]-158.60430932474
DeepCCS[M+Na]+133.5530932474
AllCCS[M+H]+129.332859911
AllCCS[M+H-H2O]+124.732859911
AllCCS[M+NH4]+133.632859911
AllCCS[M+Na]+134.832859911
AllCCS[M-H]-129.832859911
AllCCS[M+Na-2H]-131.932859911
AllCCS[M+HCOO]-134.432859911

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022.2.31 minutes32390414
Predicted by Siyang on May 30, 20228.9778 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20223.45 minutes32390414
AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid61.6 seconds40023050
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid1113.8 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid334.4 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid113.7 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid215.2 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid53.6 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid273.0 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 Acid342.1 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)236.4 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid700.5 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid35.1 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid769.9 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid197.5 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid226.9 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate379.4 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA373.6 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water98.0 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
PyrazineethanethiolSCCC1=CN=CC=N11797.2Standard polar33892256
PyrazineethanethiolSCCC1=CN=CC=N11187.6Standard non polar33892256
PyrazineethanethiolSCCC1=CN=CC=N11253.2Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Pyrazineethanethiol,1TMS,isomer #1C[Si](C)(C)SCCC1=CN=CC=N11541.3Semi standard non polar33892256
Pyrazineethanethiol,1TMS,isomer #1C[Si](C)(C)SCCC1=CN=CC=N11508.4Standard non polar33892256
Pyrazineethanethiol,1TBDMS,isomer #1CC(C)(C)[Si](C)(C)SCCC1=CN=CC=N11791.6Semi standard non polar33892256
Pyrazineethanethiol,1TBDMS,isomer #1CC(C)(C)[Si](C)(C)SCCC1=CN=CC=N11738.3Standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Pyrazineethanethiol GC-MS (Non-derivatized) - 70eV, Positivesplash10-052f-9800000000-295746f33e48770d43ea2017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Pyrazineethanethiol 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 - Pyrazineethanethiol 10V, Positive-QTOFsplash10-0006-0900000000-e99e78614be95d5a419d2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Pyrazineethanethiol 20V, Positive-QTOFsplash10-052f-1900000000-054a272d9c4580c7e9cc2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Pyrazineethanethiol 40V, Positive-QTOFsplash10-0zgi-9100000000-eb590d5d91f1b8aec7b32016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Pyrazineethanethiol 10V, Negative-QTOFsplash10-000i-2900000000-89d4ce272f8135cb25202016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Pyrazineethanethiol 20V, Negative-QTOFsplash10-000i-3900000000-cccd3d82f5867dbc810b2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Pyrazineethanethiol 40V, Negative-QTOFsplash10-001i-9000000000-ec37ce3f05bb73c8cc4e2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Pyrazineethanethiol 10V, Positive-QTOFsplash10-052f-0900000000-ff180ebdd3469389182a2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Pyrazineethanethiol 20V, Positive-QTOFsplash10-0a59-8900000000-274eab7f0c6aa94f1e702021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Pyrazineethanethiol 40V, Positive-QTOFsplash10-0v0u-9000000000-d828212a46fcc1358a7e2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Pyrazineethanethiol 10V, Negative-QTOFsplash10-000i-0900000000-7c91d95ffd94e6baefe22021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Pyrazineethanethiol 20V, Negative-QTOFsplash10-052u-4900000000-55fd15db7839927523d82021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Pyrazineethanethiol 40V, Negative-QTOFsplash10-001i-9000000000-a4c25614d0d2f04bacae2021-09-22Wishart 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+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
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 IDFDB016165
KNApSAcK IDNot Available
Chemspider ID55803
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound61945
PDB IDNot Available
ChEBI IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDrw1035631
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.. .