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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2013-07-09 16:18:56 UTC
Update Date2019-07-23 07:15:47 UTC
HMDB IDHMDB0061107
Secondary Accession Numbers
  • HMDB61107
Metabolite Identification
Common NameBuspirone N-oxide
DescriptionBuspirone N-oxide is a metabolite of buspirone. Buspirone is an anxiolytic psychoactive drug of the azapirone chemical class, and is primarily used to treat generalized anxiety disorder (GAD) Bristol-Myers Squibb (BMS) gained FDA approval of buspirone in 1986 for treatment of GAD. The patent on Buspar by Bristol-Myers Squibb expired in 2001, and buspirone is available as a generic. (Wikipedia)
Structure
Data?1563866147
SynonymsNot Available
Chemical FormulaC21H31N5O3
Average Molecular Weight401.5025
Monoisotopic Molecular Weight401.242689883
IUPAC Name8-{4-[1-oxo-4-(pyrimidin-2-yl)-1λ⁵-piperazin-1-yl]butyl}-8-azaspiro[4.5]decane-7,9-dione
Traditional Name8-{4-[1-oxo-4-(pyrimidin-2-yl)-1λ⁵-piperazin-1-yl]butyl}-8-azaspiro[4.5]decane-7,9-dione
CAS Registry NumberNot Available
SMILES
O=C1CC2(CCCC2)CC(=O)N1CCCCN1(=O)CCN(CC1)C1=NC=CC=N1
InChI Identifier
InChI=1S/C21H31N5O3/c27-18-16-21(6-1-2-7-21)17-19(28)25(18)10-3-4-13-26(29)14-11-24(12-15-26)20-22-8-5-9-23-20/h5,8-9H,1-4,6-7,10-17H2
InChI KeyPXFOIYSPRVISSG-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
  • Azaspirodecanedione
  • N-arylpiperazine
  • Azaspirodecane
  • Piperidinedione
  • Dialkylarylamine
  • Aminopyrimidine
  • Delta-lactam
  • Piperidinone
  • N-alkylpiperazine
  • Carboxylic acid imide, n-substituted
  • Piperidine
  • Pyrimidine
  • Heteroaromatic compound
  • Trialkyl amine oxide
  • Carboxylic acid imide
  • Dicarboximide
  • Lactam
  • Trisubstituted n-oxide
  • Azacycle
  • Carboxylic acid derivative
  • N-oxide
  • Organic zwitterion
  • Organonitrogen compound
  • Organic oxide
  • Organooxygen compound
  • Organic nitrogen compound
  • Carbonyl group
  • Organopnictogen compound
  • Organic oxygen 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
Water Solubility0.39 g/LALOGPS
logP0.4ALOGPS
logP0.65ChemAxon
logS-3ALOGPS
pKa (Strongest Acidic)19.26ChemAxon
pKa (Strongest Basic)1.89ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count6ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area93.28 ŲChemAxon
Rotatable Bond Count6ChemAxon
Refractivity110.94 m³·mol⁻¹ChemAxon
Polarizability44.32 ųChemAxon
Number of Rings4ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleYesChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+194.89131661259
DarkChem[M-H]-189.13631661259
DeepCCS[M+H]+192.79930932474
DeepCCS[M-H]-190.4230932474
DeepCCS[M-2H]-224.59930932474
DeepCCS[M+Na]+199.9930932474
AllCCS[M+H]+194.732859911
AllCCS[M+H-H2O]+192.632859911
AllCCS[M+NH4]+196.732859911
AllCCS[M+Na]+197.332859911
AllCCS[M-H]-192.032859911
AllCCS[M+Na-2H]-192.532859911
AllCCS[M+HCOO]-193.132859911

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022.2.91 minutes32390414
Predicted by Siyang on May 30, 202210.6261 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20223.19 minutes32390414
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid778.8 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid152.1 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid190.5 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid152.7 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid102.9 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid341.0 seconds40023050
BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid380.4 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)645.7 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid862.0 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid120.0 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid1136.2 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid272.6 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid321.1 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate386.4 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA296.8 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water67.9 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Buspirone N-oxideO=C1CC2(CCCC2)CC(=O)N1CCCCN1(=O)CCN(CC1)C1=NC=CC=N13341.6Standard polar33892256
Buspirone N-oxideO=C1CC2(CCCC2)CC(=O)N1CCCCN1(=O)CCN(CC1)C1=NC=CC=N12862.9Standard non polar33892256
Buspirone N-oxideO=C1CC2(CCCC2)CC(=O)N1CCCCN1(=O)CCN(CC1)C1=NC=CC=N13419.8Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Buspirone N-oxide GC-MS (Non-derivatized) - 70eV, Positivesplash10-05ec-2941000000-403cf4a4bec22dd129c32017-09-20Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Buspirone N-oxide 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 - Buspirone N-oxide 10V, Positive-QTOFsplash10-0udi-0030900000-d450ff3b37606a73a6722017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Buspirone N-oxide 20V, Positive-QTOFsplash10-0fk9-5894400000-5c88b04600a22bde91202017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Buspirone N-oxide 40V, Positive-QTOFsplash10-05ac-9730000000-b151e89e6367f174a6002017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Buspirone N-oxide 10V, Negative-QTOFsplash10-0udi-0301900000-77f91aacbdfdb9cc39582017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Buspirone N-oxide 20V, Negative-QTOFsplash10-0gb9-0900400000-114ad2077b37fc94b7ab2017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Buspirone N-oxide 40V, Negative-QTOFsplash10-014r-4900000000-fa5b43cfb9345b09136a2017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Buspirone N-oxide 10V, Positive-QTOFsplash10-0f89-0039500000-e89a620a285200ecbcf52021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Buspirone N-oxide 20V, Positive-QTOFsplash10-001i-0039000000-2449ccf3d47c643413be2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Buspirone N-oxide 40V, Positive-QTOFsplash10-01b9-3691000000-bfd9db49409e94f953e92021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Buspirone N-oxide 10V, Negative-QTOFsplash10-0udi-0000900000-4fa0b8580d875838da1d2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Buspirone N-oxide 20V, Negative-QTOFsplash10-0udi-0060900000-e50277bb4277dd1bdac72021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Buspirone N-oxide 40V, Negative-QTOFsplash10-001i-9520000000-13fa40235b1ceb25f3a82021-09-22Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Cytoplasm
Biospecimen Locations
  • Blood
  • Urine
Tissue Locations
  • Kidney
  • Liver
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableNormal
      Not Available
details
UrineExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableNormal
      Not Available
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 ID30778627
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound15234439
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 ReferencesNot Available