Hmdb loader
Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-10 22:01:29 UTC
Update Date2021-09-26 22:53:00 UTC
HMDB IDHMDB0244900
Secondary Accession NumbersNone
Metabolite Identification
Common Name1H-Pyrazolo[4,3-b]pyridine
Description1H-Pyrazolo[4,3-b]pyridine, also known as pyrazolopyridine, belongs to the class of organic compounds known as pyrazolopyridines. Pyrazolopyridines are compounds containing a pyrazolopyridine skeleton, which consists of a pyrazole fused to a pyridine. Pyrazole is 5-membered ring consisting of three carbon atoms and two adjacent nitrogen centers. Pyridine is a 6-membered ring with four carbon and one nitrogen atoms. Based on a literature review very few articles have been published on 1H-Pyrazolo[4,3-b]pyridine. This compound has been identified in human blood as reported by (PMID: 31557052 ). 1h-pyrazolo[4,3-b]pyridine is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically 1H-Pyrazolo[4,3-b]pyridine 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
PyrazolopyridineHMDB
Chemical FormulaC6H5N3
Average Molecular Weight119.127
Monoisotopic Molecular Weight119.048347173
IUPAC Name1H-pyrazolo[4,3-b]pyridine
Traditional Name1H-pyrazolo[4,3-b]pyridine
CAS Registry NumberNot Available
SMILES
N1N=CC2=C1C=CC=N2
InChI Identifier
InChI=1S/C6H5N3/c1-2-5-6(7-3-1)4-8-9-5/h1-4H,(H,8,9)
InChI KeyAMFYRKOUWBAGHV-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as pyrazolopyridines. Pyrazolopyridines are compounds containing a pyrazolopyridine skeleton, which consists of a pyrazole fused to a pyridine. Pyrazole is 5-membered ring consisting of three carbon atoms and two adjacent nitrogen centers. Pyridine is a 6-membered ring with four carbon and one nitrogen atoms.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassPyrazolopyridines
Sub ClassNot Available
Direct ParentPyrazolopyridines
Alternative Parents
Substituents
  • Pyrazolopyridine
  • Pyridine
  • Heteroaromatic compound
  • Pyrazole
  • Azole
  • Azacycle
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Organonitrogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot 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
logP0.52ALOGPS
logP0.46ChemAxon
logS-0.49ALOGPS
pKa (Strongest Acidic)9.17ChemAxon
pKa (Strongest Basic)1.41ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area41.57 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity33.54 m³·mol⁻¹ChemAxon
Polarizability11.46 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+121.2530932474
DeepCCS[M-H]-118.19430932474
DeepCCS[M-2H]-154.81530932474
DeepCCS[M+Na]+129.78230932474
AllCCS[M+H]+122.432859911
AllCCS[M+H-H2O]+117.332859911
AllCCS[M+NH4]+127.232859911
AllCCS[M+Na]+128.632859911
AllCCS[M-H]-119.032859911
AllCCS[M+Na-2H]-120.432859911
AllCCS[M+HCOO]-122.132859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
1H-Pyrazolo[4,3-b]pyridineN1N=CC2=C1C=CC=N22086.1Standard polar33892256
1H-Pyrazolo[4,3-b]pyridineN1N=CC2=C1C=CC=N21370.0Standard non polar33892256
1H-Pyrazolo[4,3-b]pyridineN1N=CC2=C1C=CC=N21325.1Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
1H-Pyrazolo[4,3-b]pyridine,1TMS,isomer #1C[Si](C)(C)N1N=CC2=NC=CC=C211390.2Semi standard non polar33892256
1H-Pyrazolo[4,3-b]pyridine,1TMS,isomer #1C[Si](C)(C)N1N=CC2=NC=CC=C211432.5Standard non polar33892256
1H-Pyrazolo[4,3-b]pyridine,1TMS,isomer #1C[Si](C)(C)N1N=CC2=NC=CC=C212080.8Standard polar33892256
1H-Pyrazolo[4,3-b]pyridine,1TBDMS,isomer #1CC(C)(C)[Si](C)(C)N1N=CC2=NC=CC=C211675.4Semi standard non polar33892256
1H-Pyrazolo[4,3-b]pyridine,1TBDMS,isomer #1CC(C)(C)[Si](C)(C)N1N=CC2=NC=CC=C211643.0Standard non polar33892256
1H-Pyrazolo[4,3-b]pyridine,1TBDMS,isomer #1CC(C)(C)[Si](C)(C)N1N=CC2=NC=CC=C212149.0Standard polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 1H-Pyrazolo[4,3-b]pyridine GC-MS (Non-derivatized) - 70eV, Positivesplash10-014i-8900000000-78874b56f48751ac3f462021-09-23Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 1H-Pyrazolo[4,3-b]pyridine 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 - 1H-Pyrazolo[4,3-b]pyridine 10V, Positive-QTOFsplash10-00di-0900000000-ef10496369a91fe7fe112021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 1H-Pyrazolo[4,3-b]pyridine 20V, Positive-QTOFsplash10-00di-0900000000-ef10496369a91fe7fe112021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 1H-Pyrazolo[4,3-b]pyridine 40V, Positive-QTOFsplash10-00di-0900000000-ef10496369a91fe7fe112021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 1H-Pyrazolo[4,3-b]pyridine 10V, Negative-QTOFsplash10-014i-0900000000-38ae963283fcac1f0a252021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 1H-Pyrazolo[4,3-b]pyridine 20V, Negative-QTOFsplash10-014i-1900000000-d7c13c02ec25ad2948572021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 1H-Pyrazolo[4,3-b]pyridine 40V, Negative-QTOFsplash10-014i-4900000000-33b608b3489d27cb5c902021-10-12Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Predicted 1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-10-12Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-10-12Wishart 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 ID10661323
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound21643653
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 ]