Hmdb loader
Survey
You are using an unsupported browser. Please upgrade your browser to a newer version to get the best experience on Human Metabolome Database.
Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2012-09-13 11:41:46 UTC
Update Date2023-02-21 17:28:59 UTC
HMDB IDHMDB0041833
Secondary Accession Numbers
  • HMDB41833
Metabolite Identification
Common NameBarbituric acid
DescriptionBarbituric acid or malonylurea or 6-hydroxyuracil is an organic compound based on a pyrimidine heterocyclic skeleton. It is an odorless powder soluble in water. Barbituric acid is the parent compound of barbiturate drugs, although barbituric acid itself is not pharmacologically active. The compound was discovered by the German chemist Adolf von Baeyer on December 4, 1864, the feast of Saint Barbara (who gave the compound its namesake), by combining urea and malonic acid in a condensation reaction. Malonic acid has since been replaced by diethyl malonate, as using the ester avoids the problem of having to deal with the acidity of the carboxylic acid and its unreactive carboxylate.
Structure
Data?1677000539
Synonyms
ValueSource
2,4,6(1H,3H,5H)-PyrimidinetrioneChEBI
BarbitursaeureChEBI
MalonylharnstoffChEBI
MalonylureaChEBI
BarbitateGenerator
Barbitic acidGenerator
2,4,6(1H,3H,5H)-Pyrimidinetrione (acd/name 4.0)HMDB
2,4,6-(1H,3H,5H)-PyrimidinetrioneHMDB
2,4,6-PyrimidinetriolHMDB
2,4,6-Pyrimidinetrione(1H,3H,5H)HMDB
2,4,6-TrihydroxypyrimidineHMDB
2,4,6-TrioxohexahydropyrimidineHMDB
6-HydroxyuracilHMDB
BarbiturateHMDB
BarbitursaureHMDB
N,N'-(1,3-dioxo-1,3-propanediyl)-ureaHMDB
NN'-(1,3-Dioxo-1,3-propanediyl)-ureaHMDB
Pyrimidine-2,4,6(1H,3H,5H)-trioneHMDB
PyrimidinetrioneHMDB
Barbituric acid, monosodium saltHMDB
Sodium barbiturateHMDB
Chemical FormulaC4H4N2O3
Average Molecular Weight128.0862
Monoisotopic Molecular Weight128.022192004
IUPAC Name4,6-dihydroxy-2,5-dihydropyrimidin-2-one
Traditional Namebarbituric acid
CAS Registry Number67-52-7
SMILES
OC1=NC(=O)N=C(O)C1
InChI Identifier
InChI=1S/C4H4N2O3/c7-2-1-3(8)6-4(9)5-2/h1H2,(H2,5,6,7,8,9)
InChI KeyHNYOPLTXPVRDBG-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as pyrimidones. Pyrimidones are compounds that contain a pyrimidine ring, which bears a ketone. Pyrimidine is a 6-membered ring consisting of four carbon atoms and two nitrogen centers at the 1- and 3- ring positions.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassDiazines
Sub ClassPyrimidines and pyrimidine derivatives
Direct ParentPyrimidones
Alternative Parents
Substituents
  • Pyrimidone
  • Hydropyrimidine
  • 2,5-dihydropyrimidine
  • Carbonic acid derivative
  • Propargyl-type 1,3-dipolar organic compound
  • Organic 1,3-dipolar compound
  • Azacycle
  • Organic oxide
  • Organooxygen compound
  • Organonitrogen compound
  • Organopnictogen compound
  • Organic oxygen compound
  • Carbonyl group
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Aliphatic heteromonocyclic compound
Molecular FrameworkAliphatic heteromonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
DispositionNot Available
ProcessNot Available
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point248 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility1.9e-05 mg/mL at 37 °CNot Available
LogP-1.47Not Available
Experimental Chromatographic Properties

Experimental Collision Cross Sections

Adduct TypeData SourceCCS Value (Å2)Reference
[M-H]-MetCCS_train_neg112.69230932474
Predicted Molecular Properties
PropertyValueSource
Water Solubility4.04 g/LALOGPS
logP-0.61ALOGPS
logP-0.54ChemAxon
logS-1.5ALOGPS
pKa (Strongest Acidic)5.45ChemAxon
pKa (Strongest Basic)-4.5ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area82.25 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity26.62 m³·mol⁻¹ChemAxon
Polarizability10.28 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+128.10531661259
DarkChem[M-H]-121.92731661259
DeepCCS[M+H]+127.99330932474
DeepCCS[M-H]-125.67130932474
DeepCCS[M-2H]-161.71130932474
DeepCCS[M+Na]+136.630932474
AllCCS[M+H]+126.932859911
AllCCS[M+H-H2O]+122.232859911
AllCCS[M+NH4]+131.432859911
AllCCS[M+Na]+132.632859911
AllCCS[M-H]-119.032859911
AllCCS[M+Na-2H]-121.132859911
AllCCS[M+HCOO]-123.432859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Barbituric acidOC1=NC(=O)N=C(O)C12936.4Standard polar33892256
Barbituric acidOC1=NC(=O)N=C(O)C11475.3Standard non polar33892256
Barbituric acidOC1=NC(=O)N=C(O)C11410.5Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Barbituric acid,1TMS,isomer #1C[Si](C)(C)OC1=NC(=O)N=C(O)C11552.5Semi standard non polar33892256
Barbituric acid,2TMS,isomer #1C[Si](C)(C)OC1=NC(=O)N=C(O[Si](C)(C)C)C11635.2Semi standard non polar33892256
Barbituric acid,1TBDMS,isomer #1CC(C)(C)[Si](C)(C)OC1=NC(=O)N=C(O)C11721.6Semi standard non polar33892256
Barbituric acid,2TBDMS,isomer #1CC(C)(C)[Si](C)(C)OC1=NC(=O)N=C(O[Si](C)(C)C(C)(C)C)C11952.4Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental GC-MSGC-MS Spectrum - Barbituric acid GC-MS (3 TMS)splash10-001j-4926000000-96492cf12ddafb9fa2c12014-06-16HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Barbituric acid EI-B (Non-derivatized)splash10-002f-9500000000-e1223bb8d4414dc44ce02017-09-12HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Barbituric acid GC-MS (Non-derivatized)splash10-001j-4926000000-96492cf12ddafb9fa2c12017-09-12HMDB team, MONA, MassBankView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Barbituric acid GC-MS (Non-derivatized) - 70eV, Positivesplash10-004u-9400000000-0974c3ea74bd38c34f762017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Barbituric acid GC-MS (2 TMS) - 70eV, Positivesplash10-00di-7960000000-6fe630c5f061865ad5902017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Barbituric acid GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Barbituric acid 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 - Barbituric acid 10V, Positive-QTOFsplash10-004i-0900000000-7f6de7dbc0c8385a49862016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Barbituric acid 20V, Positive-QTOFsplash10-004i-1900000000-488d5e5740b2d91542782016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Barbituric acid 40V, Positive-QTOFsplash10-03di-2900000000-c1265888f45e8b1ed0b22016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Barbituric acid 10V, Negative-QTOFsplash10-0059-6900000000-491964469e34c8b797d32016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Barbituric acid 20V, Negative-QTOFsplash10-0006-9000000000-6bad946cb9132732634e2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Barbituric acid 40V, Negative-QTOFsplash10-0006-9000000000-b2a8b5aa5f0c3f9797442016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Barbituric acid 10V, Positive-QTOFsplash10-004i-1900000000-cdefdcd922e108c6d3aa2021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Barbituric acid 20V, Positive-QTOFsplash10-002o-9200000000-e88c70650db76c01b0212021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Barbituric acid 40V, Positive-QTOFsplash10-014l-9000000000-6788917dd71900ff4a842021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Barbituric acid 10V, Negative-QTOFsplash10-004l-5900000000-69a714f826072ea5da2a2021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Barbituric acid 20V, Negative-QTOFsplash10-0006-9000000000-a2a0aae677316906679f2021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Barbituric acid 40V, Negative-QTOFsplash10-0006-9000000000-90726b17dc36e29c52992021-09-25Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Predicted 1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum

IR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M-H]-)2023-02-04FELIX labView Spectrum
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+)2023-02-04FELIX labView Spectrum
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+)2023-02-04FELIX labView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen LocationsNot Available
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
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 ID5976
KEGG Compound IDC00813
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkBarbituric_acid
METLIN IDNot Available
PubChem Compound6211
PDB IDNot Available
ChEBI ID16294
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