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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 11:50:36 UTC
Update Date2021-09-26 23:06:35 UTC
HMDB IDHMDB0253405
Secondary Accession NumbersNone
Metabolite Identification
Common NameImazapyr
DescriptionImazapyr belongs to the class of organic compounds known as alpha amino acids and derivatives. These are amino acids in which the amino group is attached to the carbon atom immediately adjacent to the carboxylate group (alpha carbon), or a derivative thereof. Imazapyr is a moderately basic compound (based on its pKa). Imazapyr is a non-selective herbicide for non-crop land applications which is particularly effective on hard-to-control perennial grasses. Its mode of action is non-selective and absorbed by foliage and rapidly translocated. Imazapyr is a potentially toxic compound. Additionally, imazapyr is used to control annual and perennial grass and broadleaved weeds, brush, vines and many deciduous trees. It is used to eliminate Lithocarpus densiflorus (Tan Oak) and Arbutus menziesii (Pacific Madrone). It controls vegetation by interfering with an enzyme pathway. In plants, imazapyr disrupts protein synthesis and interferes with cell growth and DNA synthesis. It accumulates in the meristem region (active growth region) of the plant. Imazapyr is absorbed by the leaves and roots, and moves rapidly through the plant. It is used for the control of a broad range of weeds including terrestrial annual and perennial grasses and broadleaved herbs, woody species, and riparian and emergent aquatic species. It inhibits acetolactate synthase. This compound has been identified in human blood as reported by (PMID: 31557052 ). Imazapyr is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Imazapyr 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
ArsenalMeSH
Imazapyr, (-)-isomerMeSH
Imazapyr, ammonium saltMeSH
Imazapyr, calcium saltMeSH
Imazapyr, potassium saltMeSH
Imazapyr, sodium saltMeSH
Imazapyr, (+)-isomerMeSH
Imazapyr, (+-)-isomerMeSH
Imazapyr, (S)-isomerMeSH
Imazapyr, lithium saltMeSH
2-(4-Isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acidMeSH
Imazapyr, (R)-isomerMeSH
Imazapyr, barium saltMeSH
Imazapyr, copper (2) saltMeSH
Imazapyr, iron (2) saltMeSH
Imazapyr, iron (3) saltMeSH
Imazapyr, magnesium saltMeSH
Chemical FormulaC13H15N3O3
Average Molecular Weight261.2765
Monoisotopic Molecular Weight261.111341361
IUPAC Name2-[5-methyl-4-oxo-5-(propan-2-yl)-4,5-dihydro-1H-imidazol-2-yl]pyridine-3-carboxylic acid
Traditional Name2-(4-isopropyl-4-methyl-5-oxo-3H-imidazol-2-yl)pyridine-3-carboxylic acid
CAS Registry NumberNot Available
SMILES
CC(C)C1(C)NC(=NC1=O)C1=C(C=CC=N1)C(O)=O
InChI Identifier
InChI=1S/C13H15N3O3/c1-7(2)13(3)12(19)15-10(16-13)9-8(11(17)18)5-4-6-14-9/h4-7H,1-3H3,(H,17,18)(H,15,16,19)
InChI KeyCLQMBPJKHLGMQK-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as alpha amino acids and derivatives. These are amino acids in which the amino group is attached to the carbon atom immediately adjacent to the carboxylate group (alpha carbon), or a derivative thereof.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentAlpha amino acids and derivatives
Alternative Parents
Substituents
  • Alpha-amino acid or derivatives
  • Pyridine carboxylic acid
  • Pyridine carboxylic acid or derivatives
  • Imidazolyl carboxylic acid derivative
  • Imidazolinone
  • Pyridine
  • 2-imidazoline
  • Heteroaromatic compound
  • Azacycle
  • Organoheterocyclic compound
  • Carboxylic acid amidine
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Amidine
  • Carboximidamide
  • Propargyl-type 1,3-dipolar organic compound
  • Organic 1,3-dipolar compound
  • Organonitrogen compound
  • Organooxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Carbonyl group
  • Organic nitrogen compound
  • Organic oxygen compound
  • Organopnictogen compound
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
Process
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
logP1.1ALOGPS
logP1.12ChemAxon
logS-2.7ALOGPS
pKa (Strongest Acidic)3.65ChemAxon
pKa (Strongest Basic)1.36ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count6ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area91.65 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity67.83 m³·mol⁻¹ChemAxon
Polarizability26.46 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]+170.38130932474
DeepCCS[M-H]-168.02330932474
DeepCCS[M-2H]-200.90930932474
DeepCCS[M+Na]+176.47430932474
AllCCS[M+H]+158.332859911
AllCCS[M+H-H2O]+154.732859911
AllCCS[M+NH4]+161.632859911
AllCCS[M+Na]+162.632859911
AllCCS[M-H]-161.832859911
AllCCS[M+Na-2H]-161.832859911
AllCCS[M+HCOO]-161.932859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
ImazapyrCC(C)C1(C)NC(=NC1=O)C1=C(C=CC=N1)C(O)=O2800.4Standard polar33892256
ImazapyrCC(C)C1(C)NC(=NC1=O)C1=C(C=CC=N1)C(O)=O2156.2Standard non polar33892256
ImazapyrCC(C)C1(C)NC(=NC1=O)C1=C(C=CC=N1)C(O)=O2332.4Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Imazapyr,2TMS,isomer #1CC(C)C1(C)C(=O)N=C(C2=NC=CC=C2C(=O)O[Si](C)(C)C)N1[Si](C)(C)C2223.4Semi standard non polar33892256
Imazapyr,2TMS,isomer #1CC(C)C1(C)C(=O)N=C(C2=NC=CC=C2C(=O)O[Si](C)(C)C)N1[Si](C)(C)C2172.6Standard non polar33892256
Imazapyr,2TMS,isomer #1CC(C)C1(C)C(=O)N=C(C2=NC=CC=C2C(=O)O[Si](C)(C)C)N1[Si](C)(C)C3205.0Standard polar33892256
Imazapyr,2TBDMS,isomer #1CC(C)C1(C)C(=O)N=C(C2=NC=CC=C2C(=O)O[Si](C)(C)C(C)(C)C)N1[Si](C)(C)C(C)(C)C2555.2Semi standard non polar33892256
Imazapyr,2TBDMS,isomer #1CC(C)C1(C)C(=O)N=C(C2=NC=CC=C2C(=O)O[Si](C)(C)C(C)(C)C)N1[Si](C)(C)C(C)(C)C2593.7Standard non polar33892256
Imazapyr,2TBDMS,isomer #1CC(C)C1(C)C(=O)N=C(C2=NC=CC=C2C(=O)O[Si](C)(C)C(C)(C)C)N1[Si](C)(C)C(C)(C)C3326.6Standard polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Imazapyr GC-MS (Non-derivatized) - 70eV, Positivesplash10-0006-5290000000-009fb59af301047498822021-09-24Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Imazapyr GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Imazapyr GC-MS (TMS_1_1) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Imazapyr GC-MS (TMS_1_2) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Imazapyr GC-MS (TBDMS_1_1) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Imazapyr GC-MS (TBDMS_1_2) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental LC-MS/MSLC-MS/MS Spectrum - Imazapyr 20V, Positive-QTOFsplash10-03di-0090000000-c384ad9ab4e6730091ee2021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Imazapyr 10V, Positive-QTOFsplash10-03di-0090000000-a7c5bd513454ae7f04692021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Imazapyr 30V, Positive-QTOFsplash10-0fr2-0890000000-11f8428e1bd5bfbca5502021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Imazapyr 50V, Positive-QTOFsplash10-001j-0900000000-d12b68ab2423d570f1da2021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Imazapyr 30V, Positive-QTOFsplash10-0fr2-0890000000-d8f1e08d9ac3aab507bd2021-09-20HMDB team, MONAView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Imazapyr 10V, Positive-QTOFsplash10-03di-0090000000-0518d226091f2b17f49c2016-08-02Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Imazapyr 20V, Positive-QTOFsplash10-0gi0-0190000000-b6a067182981ed45a8fb2016-08-02Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Imazapyr 40V, Positive-QTOFsplash10-00yr-9200000000-e8c75a45604eef0b85c82016-08-02Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Imazapyr 10V, Negative-QTOFsplash10-02t9-0090000000-4d0d33e51d3f18d1a7992016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Imazapyr 20V, Negative-QTOFsplash10-014i-0390000000-6e11820b37998d2154272016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Imazapyr 40V, Negative-QTOFsplash10-00gj-7900000000-3104747debcbadb868942016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Imazapyr 10V, Positive-QTOFsplash10-0006-0090000000-9530cf6a708448382f1d2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Imazapyr 20V, Positive-QTOFsplash10-03dl-2490000000-33e1652bddeca192c25f2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Imazapyr 40V, Positive-QTOFsplash10-0ab9-2910000000-28b55a5ad1c3c171997b2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Imazapyr 10V, Negative-QTOFsplash10-02t9-0090000000-44cad758d29bd273711b2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Imazapyr 20V, Negative-QTOFsplash10-114i-1590000000-193556092eedfde47a292021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Imazapyr 40V, Negative-QTOFsplash10-004j-7910000000-d17d3d1b021c1f5409f02021-10-12Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
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 IDNot Available
KEGG Compound IDC18864
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkImazapyr
METLIN IDNot Available
PubChem Compound54738
PDB IDNot Available
ChEBI ID133187
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 ]