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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 14:25:12 UTC
Update Date2021-09-26 23:09:23 UTC
HMDB IDHMDB0254936
Secondary Accession NumbersNone
Metabolite Identification
Common Name2-Methyl-4-(pyridin-3-ylethynyl)thiazole
Description2-Methyl-4-(pyridin-3-ylethynyl)thiazole, also known as 3-((2-methyl-1,3-thiazol-4-yl)ethynyl)pyridine or mtep compound, belongs to the class of organic compounds known as 2,4-disubstituted thiazoles. 2,4-disubstituted thiazoles are compounds containing a thiazole ring substituted at the positions 2 and 3. Based on a literature review very few articles have been published on 2-Methyl-4-(pyridin-3-ylethynyl)thiazole. This compound has been identified in human blood as reported by (PMID: 31557052 ). 2-methyl-4-(pyridin-3-ylethynyl)thiazole is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically 2-Methyl-4-(pyridin-3-ylethynyl)thiazole is part of the human exposome. The exposome can be defined as the collection of all the exposures of an individual in a lifetime and how those exposures relate to health. An individual's exposure begins before birth and includes insults from environmental and occupational sources.
Structure
Thumb
Synonyms
ValueSource
3-((2-Methyl-1,3-thiazol-4-yl)ethynyl)pyridineMeSH
MTEP compoundMeSH
Chemical FormulaC11H8N2S
Average Molecular Weight200.26
Monoisotopic Molecular Weight200.04081944
IUPAC Name3-[2-(2-methyl-1,3-thiazol-4-yl)ethynyl]pyridine
Traditional NameMTEP
CAS Registry NumberNot Available
SMILES
CC1=NC(=CS1)C#CC1=CN=CC=C1
InChI Identifier
InChI=1S/C11H8N2S/c1-9-13-11(8-14-9)5-4-10-3-2-6-12-7-10/h2-3,6-8H,1H3
InChI KeyNRBNGHCYDWUVLC-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as 2,4-disubstituted thiazoles. 2,4-Disubstituted thiazoles are compounds containing a thiazole ring substituted at the positions 2 and 3.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassAzoles
Sub ClassThiazoles
Direct Parent2,4-disubstituted thiazoles
Alternative Parents
Substituents
  • 2,4-disubstituted 1,3-thiazole
  • Pyridine
  • Heteroaromatic compound
  • Azacycle
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Organonitrogen compound
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External DescriptorsNot Available
Ontology
Not AvailableNot 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
logP2.29ALOGPS
logP2.04ChemAxon
logS-4.2ALOGPS
pKa (Strongest Basic)3.06ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area25.78 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity51.01 m³·mol⁻¹ChemAxon
Polarizability21.77 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+139.0430932474
DeepCCS[M-H]-136.64430932474
DeepCCS[M-2H]-171.45630932474
DeepCCS[M+Na]+145.91530932474
AllCCS[M+H]+141.132859911
AllCCS[M+H-H2O]+136.732859911
AllCCS[M+NH4]+145.332859911
AllCCS[M+Na]+146.532859911
AllCCS[M-H]-145.432859911
AllCCS[M+Na-2H]-145.632859911
AllCCS[M+HCOO]-145.932859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
2-Methyl-4-(pyridin-3-ylethynyl)thiazoleCC1=NC(=CS1)C#CC1=CN=CC=C12697.5Standard polar33892256
2-Methyl-4-(pyridin-3-ylethynyl)thiazoleCC1=NC(=CS1)C#CC1=CN=CC=C11770.8Standard non polar33892256
2-Methyl-4-(pyridin-3-ylethynyl)thiazoleCC1=NC(=CS1)C#CC1=CN=CC=C11906.3Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 2-Methyl-4-(pyridin-3-ylethynyl)thiazole GC-MS (Non-derivatized) - 70eV, Positivesplash10-0udi-3940000000-e94146dda8e887b3dc062021-09-24Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 2-Methyl-4-(pyridin-3-ylethynyl)thiazole 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 - 2-Methyl-4-(pyridin-3-ylethynyl)thiazole 10V, Positive-QTOFsplash10-0udi-0090000000-4c066ce5697caa7ee57b2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-4-(pyridin-3-ylethynyl)thiazole 20V, Positive-QTOFsplash10-0udi-0590000000-fc16cecc94b27e4c6a4b2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-4-(pyridin-3-ylethynyl)thiazole 40V, Positive-QTOFsplash10-0fb9-3900000000-cbb8ac1f78b9a4e2e2ea2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-4-(pyridin-3-ylethynyl)thiazole 10V, Negative-QTOFsplash10-0002-0900000000-3c62f9ab28002bcbd8ef2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-4-(pyridin-3-ylethynyl)thiazole 20V, Negative-QTOFsplash10-0a4j-0900000000-71b2050b002d5e1b74892021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-4-(pyridin-3-ylethynyl)thiazole 40V, Negative-QTOFsplash10-05di-0900000000-dcb51dd99ae8994cc3a32021-10-12Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID7969985
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound9794218
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. Barupal DK, Fiehn O: Generating the Blood Exposome Database Using a Comprehensive Text Mining and Database Fusion Approach. Environ Health Perspect. 2019 Sep;127(9):97008. doi: 10.1289/EHP4713. Epub 2019 Sep 26. [PubMed:31557052 ]