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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 09:39:45 UTC
Update Date2021-09-26 23:04:18 UTC
HMDB IDHMDB0251990
Secondary Accession NumbersNone
Metabolite Identification
Common NameEtazolate
Descriptionetazolate, also known as eht-0202 or SQ-20,009, 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 a significant number of articles have been published on etazolate. This compound has been identified in human blood as reported by (PMID: 31557052 ). Etazolate is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Etazolate 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
1-Ethyl-4-(2-propan-2-ylidenehydrazinyl)-5-pyrazolo[3,4-b]pyridinecarboxylic acid ethyl esterChEBI
1H-Pyrazolo(3,4-b)pyridine-5-carboxylic acid, 1-ethyl-4-((1-methylethylidene)hydrazino)-, ethyl esterChEBI
EHT-0202ChEBI
EtazolatoChEBI
EtazolatumChEBI
Ethyl 1-ethyl-4-(2-isopropylidenehydrazino)pyrazolo[3,4-b]pyridine-5-carboxylateChEBI
Ethyl 1-ethyl-4-(2-propan-2-ylidenehydrazinyl)pyrazolo[3,4-b]pyridine-5-carboxylateChEBI
Ethyl 1-ethyl-4-(2-propan-2-ylidenehydrazinyl)pyrazolo[4,5-e]pyridine-5-carboxylateChEBI
Ethyl 1-ethyl-4-[2-(1-methylethylidene)hydrazino]-1H-pyrazolo[3,4-b]pyridine-5-carboxylateChEBI
SQ-20,009ChEBI
1-Ethyl-4-(2-propan-2-ylidenehydrazinyl)-5-pyrazolo[3,4-b]pyridinecarboxylate ethyl esterGenerator
1H-Pyrazolo(3,4-b)pyridine-5-carboxylate, 1-ethyl-4-((1-methylethylidene)hydrazino)-, ethyl esterGenerator
Ethyl 1-ethyl-4-(2-isopropylidenehydrazino)pyrazolo[3,4-b]pyridine-5-carboxylic acidGenerator
Ethyl 1-ethyl-4-(2-propan-2-ylidenehydrazinyl)pyrazolo[3,4-b]pyridine-5-carboxylic acidGenerator
Ethyl 1-ethyl-4-(2-propan-2-ylidenehydrazinyl)pyrazolo[4,5-e]pyridine-5-carboxylic acidGenerator
Ethyl 1-ethyl-4-[2-(1-methylethylidene)hydrazino]-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acidGenerator
Etazolic acidGenerator
Etazolate hydrochlorideMeSH
Hydrochloride, etazolateMeSH
Chemical FormulaC14H19N5O2
Average Molecular Weight289.339
Monoisotopic Molecular Weight289.153874872
IUPAC Nameethyl 1-ethyl-4-[2-(propan-2-ylidene)hydrazin-1-yl]-1H-pyrazolo[3,4-b]pyridine-5-carboxylate
Traditional Nameetazolate
CAS Registry NumberNot Available
SMILES
CCOC(=O)C1=CN=C2N(CC)N=CC2=C1NN=C(C)C
InChI Identifier
InChI=1S/C14H19N5O2/c1-5-19-13-10(8-16-19)12(18-17-9(3)4)11(7-15-13)14(20)21-6-2/h7-8H,5-6H2,1-4H3,(H,15,18)
InChI KeyOPQRBXUBWHDHPQ-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 carboxylic acid
  • Pyridine carboxylic acid or derivatives
  • Pyridine
  • Azole
  • Pyrazole
  • Vinylogous amide
  • Heteroaromatic compound
  • Carboxylic acid ester
  • Monocarboxylic acid or derivatives
  • Hydrazone
  • Carboxylic acid derivative
  • Azacycle
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Hydrocarbon derivative
  • 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
logP2.49ALOGPS
logP2.18ChemAxon
logS-2.9ALOGPS
pKa (Strongest Acidic)14.68ChemAxon
pKa (Strongest Basic)4.76ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area81.4 ŲChemAxon
Rotatable Bond Count6ChemAxon
Refractivity92.48 m³·mol⁻¹ChemAxon
Polarizability31.27 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+167.53530932474
DeepCCS[M-H]-165.17730932474
DeepCCS[M-2H]-198.06230932474
DeepCCS[M+Na]+173.62830932474

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
EtazolateCCOC(=O)C1=CN=C2N(CC)N=CC2=C1NN=C(C)C3055.6Standard polar33892256
EtazolateCCOC(=O)C1=CN=C2N(CC)N=CC2=C1NN=C(C)C2465.0Standard non polar33892256
EtazolateCCOC(=O)C1=CN=C2N(CC)N=CC2=C1NN=C(C)C2338.8Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Etazolate,1TMS,isomer #1CCOC(=O)C1=CN=C2C(=C1N(N=C(C)C)[Si](C)(C)C)C=NN2CC2375.7Semi standard non polar33892256
Etazolate,1TMS,isomer #1CCOC(=O)C1=CN=C2C(=C1N(N=C(C)C)[Si](C)(C)C)C=NN2CC2314.0Standard non polar33892256
Etazolate,1TMS,isomer #1CCOC(=O)C1=CN=C2C(=C1N(N=C(C)C)[Si](C)(C)C)C=NN2CC3613.1Standard polar33892256
Etazolate,1TBDMS,isomer #1CCOC(=O)C1=CN=C2C(=C1N(N=C(C)C)[Si](C)(C)C(C)(C)C)C=NN2CC2536.8Semi standard non polar33892256
Etazolate,1TBDMS,isomer #1CCOC(=O)C1=CN=C2C(=C1N(N=C(C)C)[Si](C)(C)C(C)(C)C)C=NN2CC2507.8Standard non polar33892256
Etazolate,1TBDMS,isomer #1CCOC(=O)C1=CN=C2C(=C1N(N=C(C)C)[Si](C)(C)C(C)(C)C)C=NN2CC3576.9Standard polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Etazolate GC-MS (Non-derivatized) - 70eV, Positivesplash10-00or-3190000000-c83564c5f0d4388366752021-09-24Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Etazolate 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 - Etazolate 10V, Positive-QTOFsplash10-0006-0090000000-8d632a4a722fd5f095e32021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Etazolate 20V, Positive-QTOFsplash10-0006-0090000000-2da068ffe985d39fa0c32021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Etazolate 40V, Positive-QTOFsplash10-00n3-1690000000-eb8531705910d60fac392021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Etazolate 10V, Negative-QTOFsplash10-000i-0090000000-4b843833bcf60d085e7a2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Etazolate 20V, Negative-QTOFsplash10-000i-0490000000-9b918f29263665a1d8b72021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Etazolate 40V, Negative-QTOFsplash10-0006-0900000000-b967b564b69433a8ba152021-10-12Wishart 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 ID3162
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkEtazolate
METLIN IDNot Available
PubChem CompoundNot Available
PDB IDNot Available
ChEBI ID138502
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 ]