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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 00:08:30 UTC
Update Date2022-09-22 17:45:01 UTC
HMDB IDHMDB0247128
Secondary Accession NumbersNone
Metabolite Identification
Common Name6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine
Description6,7-dimethoxy-2-(piperazin-1-yl)-3,4-dihydroquinazolin-4-imine belongs to the class of organic compounds known as n-arylpiperazines. These are organic compounds containing a piperazine ring where the nitrogen ring atom carries an aryl group. Based on a literature review very few articles have been published on 6,7-dimethoxy-2-(piperazin-1-yl)-3,4-dihydroquinazolin-4-imine. This compound has been identified in human blood as reported by (PMID: 31557052 ). 6,7-dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine 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
Aminodimethoxyquinazolinylpiperazine (piperazine derivative OF terazosin)ChEMBL
2-(1-Piperazinyl)-4-amino-6,7-dimethoxyquinazolineMeSH
2-PADQZMeSH
2-(1-Piperazinyl)-4-amino-6,7-dimethoxyquinazoline monohydrochlorideMeSH
2-(1-Piperazinyl)-4-amino-6,7-dimethoxyquinazoline dihydrochlorideMeSH
2-Piperazine-4-amino-6, 7-dimethoxyquinazolineMeSH
Chemical FormulaC14H19N5O2
Average Molecular Weight289.333
Monoisotopic Molecular Weight289.153874877
IUPAC Name6,7-dimethoxy-2-(piperazin-1-yl)-3,4-dihydroquinazolin-4-imine
Traditional Name6,7-dimethoxy-2-(piperazin-1-yl)-3H-quinazolin-4-imine
CAS Registry NumberNot Available
SMILES
COC1=C(OC)C=C2C(=N)NC(=NC2=C1)N1CCNCC1
InChI Identifier
InChI=1S/C14H19N5O2/c1-20-11-7-9-10(8-12(11)21-2)17-14(18-13(9)15)19-5-3-16-4-6-19/h7-8,16H,3-6H2,1-2H3,(H2,15,17,18)
InChI KeyAPKHJGDGWQDBGM-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as n-arylpiperazines. These are organic compounds containing a piperazine ring where the nitrogen ring atom carries an aryl group.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassDiazinanes
Sub ClassPiperazines
Direct ParentN-arylpiperazines
Alternative Parents
Substituents
  • N-arylpiperazine
  • Quinazolinamine
  • Diazanaphthalene
  • Quinazoline
  • Anisole
  • Dialkylarylamine
  • Alkyl aryl ether
  • Aminopyrimidine
  • Pyrimidine
  • Imidolactam
  • Benzenoid
  • Heteroaromatic compound
  • Secondary aliphatic amine
  • Ether
  • Azacycle
  • Secondary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Amine
  • Organic nitrogen compound
  • Primary amine
  • Hydrocarbon derivative
  • Organic oxygen compound
  • Organopnictogen 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
logP0.11ALOGPS
logP0.31ChemAxon
logS-3.2ALOGPS
pKa (Strongest Acidic)11.21ChemAxon
pKa (Strongest Basic)9.05ChemAxon
Physiological Charge2ChemAxon
Hydrogen Acceptor Count7ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area81.97 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity92.41 m³·mol⁻¹ChemAxon
Polarizability30.95 ųChemAxon
Number of Rings3ChemAxon
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]+165.89830932474
DeepCCS[M-H]-163.5430932474
DeepCCS[M-2H]-196.56130932474
DeepCCS[M+Na]+171.99130932474
AllCCS[M+H]+168.732859911
AllCCS[M+H-H2O]+165.432859911
AllCCS[M+NH4]+171.832859911
AllCCS[M+Na]+172.632859911
AllCCS[M-H]-169.832859911
AllCCS[M+Na-2H]-169.632859911
AllCCS[M+HCOO]-169.632859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amineCOC1=C(OC)C=C2C(=N)NC(=NC2=C1)N1CCNCC13776.3Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amineCOC1=C(OC)C=C2C(=N)NC(=NC2=C1)N1CCNCC12706.5Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amineCOC1=C(OC)C=C2C(=N)NC(=NC2=C1)N1CCNCC13006.1Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C)[NH]C(N1CCNCC1)=N22752.5Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C)[NH]C(N1CCNCC1)=N22695.8Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C)[NH]C(N1CCNCC1)=N24381.2Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TMS,isomer #2COC1=CC2=C(C=C1OC)C(=N)N([Si](C)(C)C)C(N1CCNCC1)=N22829.8Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TMS,isomer #2COC1=CC2=C(C=C1OC)C(=N)N([Si](C)(C)C)C(N1CCNCC1)=N22608.1Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TMS,isomer #2COC1=CC2=C(C=C1OC)C(=N)N([Si](C)(C)C)C(N1CCNCC1)=N24418.5Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TMS,isomer #3COC1=CC2=C(C=C1OC)C(=N)[NH]C(N1CCN([Si](C)(C)C)CC1)=N22960.7Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TMS,isomer #3COC1=CC2=C(C=C1OC)C(=N)[NH]C(N1CCN([Si](C)(C)C)CC1)=N22864.2Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TMS,isomer #3COC1=CC2=C(C=C1OC)C(=N)[NH]C(N1CCN([Si](C)(C)C)CC1)=N24262.4Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C)[NH]C(N1CCN([Si](C)(C)C)CC1)=N22872.1Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C)[NH]C(N1CCN([Si](C)(C)C)CC1)=N22954.8Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C)[NH]C(N1CCN([Si](C)(C)C)CC1)=N24066.5Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TMS,isomer #2COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C)N([Si](C)(C)C)C(N1CCNCC1)=N22781.4Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TMS,isomer #2COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C)N([Si](C)(C)C)C(N1CCNCC1)=N22673.2Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TMS,isomer #2COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C)N([Si](C)(C)C)C(N1CCNCC1)=N24064.4Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TMS,isomer #3COC1=CC2=C(C=C1OC)C(=N)N([Si](C)(C)C)C(N1CCN([Si](C)(C)C)CC1)=N22900.7Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TMS,isomer #3COC1=CC2=C(C=C1OC)C(=N)N([Si](C)(C)C)C(N1CCN([Si](C)(C)C)CC1)=N22886.3Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TMS,isomer #3COC1=CC2=C(C=C1OC)C(=N)N([Si](C)(C)C)C(N1CCN([Si](C)(C)C)CC1)=N24084.1Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,3TMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C)N([Si](C)(C)C)C(N1CCN([Si](C)(C)C)CC1)=N22904.3Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,3TMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C)N([Si](C)(C)C)C(N1CCN([Si](C)(C)C)CC1)=N22915.8Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,3TMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C)N([Si](C)(C)C)C(N1CCN([Si](C)(C)C)CC1)=N23779.2Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TBDMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C(C)(C)C)[NH]C(N1CCNCC1)=N22950.3Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TBDMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C(C)(C)C)[NH]C(N1CCNCC1)=N22923.2Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TBDMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C(C)(C)C)[NH]C(N1CCNCC1)=N24389.4Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TBDMS,isomer #2COC1=CC2=C(C=C1OC)C(=N)N([Si](C)(C)C(C)(C)C)C(N1CCNCC1)=N22954.0Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TBDMS,isomer #2COC1=CC2=C(C=C1OC)C(=N)N([Si](C)(C)C(C)(C)C)C(N1CCNCC1)=N22798.5Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TBDMS,isomer #2COC1=CC2=C(C=C1OC)C(=N)N([Si](C)(C)C(C)(C)C)C(N1CCNCC1)=N24348.0Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TBDMS,isomer #3COC1=CC2=C(C=C1OC)C(=N)[NH]C(N1CCN([Si](C)(C)C(C)(C)C)CC1)=N23155.7Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TBDMS,isomer #3COC1=CC2=C(C=C1OC)C(=N)[NH]C(N1CCN([Si](C)(C)C(C)(C)C)CC1)=N23055.8Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,1TBDMS,isomer #3COC1=CC2=C(C=C1OC)C(=N)[NH]C(N1CCN([Si](C)(C)C(C)(C)C)CC1)=N24434.2Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TBDMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C(C)(C)C)[NH]C(N1CCN([Si](C)(C)C(C)(C)C)CC1)=N23235.6Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TBDMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C(C)(C)C)[NH]C(N1CCN([Si](C)(C)C(C)(C)C)CC1)=N23387.6Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TBDMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C(C)(C)C)[NH]C(N1CCN([Si](C)(C)C(C)(C)C)CC1)=N24150.7Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TBDMS,isomer #2COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)C(N1CCNCC1)=N23128.1Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TBDMS,isomer #2COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)C(N1CCNCC1)=N23068.5Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TBDMS,isomer #2COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)C(N1CCNCC1)=N24004.5Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TBDMS,isomer #3COC1=CC2=C(C=C1OC)C(=N)N([Si](C)(C)C(C)(C)C)C(N1CCN([Si](C)(C)C(C)(C)C)CC1)=N23264.2Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TBDMS,isomer #3COC1=CC2=C(C=C1OC)C(=N)N([Si](C)(C)C(C)(C)C)C(N1CCN([Si](C)(C)C(C)(C)C)CC1)=N23266.8Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,2TBDMS,isomer #3COC1=CC2=C(C=C1OC)C(=N)N([Si](C)(C)C(C)(C)C)C(N1CCN([Si](C)(C)C(C)(C)C)CC1)=N24107.7Standard polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,3TBDMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)C(N1CCN([Si](C)(C)C(C)(C)C)CC1)=N23443.0Semi standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,3TBDMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)C(N1CCN([Si](C)(C)C(C)(C)C)CC1)=N23496.0Standard non polar33892256
6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine,3TBDMS,isomer #1COC1=CC2=C(C=C1OC)C(=N[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)C(N1CCN([Si](C)(C)C(C)(C)C)CC1)=N23903.0Standard polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine GC-MS (Non-derivatized) - 70eV, Positivesplash10-00gj-2790000000-0bba7071a827ca26c72e2021-09-24Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental LC-MS/MSLC-MS/MS Spectrum - 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine 50V, Positive-QTOFsplash10-000y-0090000000-bb9cf12d4616678d1e162021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine 50V, Positive-QTOFsplash10-000y-0090000000-953d3b59b24be1a8be372021-09-20HMDB team, MONAView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine 10V, Positive-QTOFsplash10-0006-0090000000-321d2c1180cf411bda862021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine 20V, Positive-QTOFsplash10-0006-0090000000-5ee8754905f7aa85a2782021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine 40V, Positive-QTOFsplash10-06dl-0190000000-8f4deb12cfb09a6ee36b2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine 10V, Negative-QTOFsplash10-000i-0090000000-4118bfc2df3ad8c8d0042021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine 20V, Negative-QTOFsplash10-000i-0090000000-a266b8304dcf438d43ff2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine 40V, Negative-QTOFsplash10-0ufv-0290000000-4f23d1cfe8ae6aa15ce22021-10-12Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal details
UrineDetected 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 ID535598
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem CompoundNot Available
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 ]