Record Information |
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Version | 5.0 |
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Status | Expected but not Quantified |
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Creation Date | 2012-09-13 11:41:46 UTC |
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Update Date | 2023-02-21 17:28:59 UTC |
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HMDB ID | HMDB0041833 |
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Secondary Accession Numbers | |
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Metabolite Identification |
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Common Name | Barbituric acid |
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Description | Barbituric 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 Malonic acid has since been replaced by diethyl malonate, as using the ester avoids the problem of having to deal with the acidity of the carboxylic acid and its unreactive carboxylate. |
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Structure | InChI=1S/C4H4N2O3/c7-2-1-3(8)6-4(9)5-2/h1H2,(H2,5,6,7,8,9) |
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Synonyms | Value | Source |
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2,4,6(1H,3H,5H)-Pyrimidinetrione | ChEBI | Barbitursaeure | ChEBI | Malonylharnstoff | ChEBI | Malonylurea | ChEBI | Barbitate | Generator | Barbitic acid | Generator | 2,4,6(1H,3H,5H)-Pyrimidinetrione (acd/name 4.0) | HMDB | 2,4,6-(1H,3H,5H)-Pyrimidinetrione | HMDB | 2,4,6-Pyrimidinetriol | HMDB | 2,4,6-Pyrimidinetrione(1H,3H,5H) | HMDB | 2,4,6-Trihydroxypyrimidine | HMDB | 2,4,6-Trioxohexahydropyrimidine | HMDB | 6-Hydroxyuracil | HMDB | Barbiturate | HMDB | Barbitursaure | HMDB | N,N'-(1,3-dioxo-1,3-propanediyl)-urea | HMDB | NN'-(1,3-Dioxo-1,3-propanediyl)-urea | HMDB | Pyrimidine-2,4,6(1H,3H,5H)-trione | HMDB | Pyrimidinetrione | HMDB | Barbituric acid, monosodium salt | HMDB | Sodium barbiturate | HMDB |
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Chemical Formula | C4H4N2O3 |
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Average Molecular Weight | 128.0862 |
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Monoisotopic Molecular Weight | 128.022192004 |
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IUPAC Name | 4,6-dihydroxy-2,5-dihydropyrimidin-2-one |
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Traditional Name | barbituric acid |
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CAS Registry Number | 67-52-7 |
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SMILES | OC1=NC(=O)N=C(O)C1 |
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InChI Identifier | InChI=1S/C4H4N2O3/c7-2-1-3(8)6-4(9)5-2/h1H2,(H2,5,6,7,8,9) |
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InChI Key | HNYOPLTXPVRDBG-UHFFFAOYSA-N |
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Chemical Taxonomy |
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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. |
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Kingdom | Organic compounds |
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Super Class | Organoheterocyclic compounds |
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Class | Diazines |
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Sub Class | Pyrimidines and pyrimidine derivatives |
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Direct Parent | Pyrimidones |
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Alternative Parents | |
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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
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Molecular Framework | Aliphatic heteromonocyclic compounds |
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External Descriptors | |
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Ontology |
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Physiological effect | Not Available |
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Disposition | |
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Process | Not Available |
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Role | Not Available |
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Physical Properties |
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State | Solid |
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Experimental Molecular Properties | Property | Value | Reference |
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Melting Point | 248 °C | Not Available | Boiling Point | Not Available | Not Available | Water Solubility | 1.9e-05 mg/mL at 37 °C | Not Available | LogP | -1.47 | Not Available |
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Experimental Chromatographic Properties | Experimental Collision Cross SectionsAdduct Type | Data Source | CCS Value (Å2) | Reference |
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[M-H]- | MetCCS_train_neg | 112.692 | 30932474 |
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Predicted Molecular Properties | |
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Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Kovats Retention IndicesUnderivatizedDerivatized |
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| GC-MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Experimental GC-MS | GC-MS Spectrum - Barbituric acid GC-MS (3 TMS) | splash10-001j-4926000000-96492cf12ddafb9fa2c1 | 2014-06-16 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Barbituric acid EI-B (Non-derivatized) | splash10-002f-9500000000-e1223bb8d4414dc44ce0 | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Barbituric acid GC-MS (Non-derivatized) | splash10-001j-4926000000-96492cf12ddafb9fa2c1 | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Barbituric acid GC-MS (Non-derivatized) - 70eV, Positive | splash10-004u-9400000000-0974c3ea74bd38c34f76 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Barbituric acid GC-MS (2 TMS) - 70eV, Positive | splash10-00di-7960000000-6fe630c5f061865ad590 | 2017-10-06 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Barbituric acid GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Barbituric acid GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |
MS/MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Barbituric acid 10V, Positive-QTOF | splash10-004i-0900000000-7f6de7dbc0c8385a4986 | 2016-08-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Barbituric acid 20V, Positive-QTOF | splash10-004i-1900000000-488d5e5740b2d9154278 | 2016-08-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Barbituric acid 40V, Positive-QTOF | splash10-03di-2900000000-c1265888f45e8b1ed0b2 | 2016-08-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Barbituric acid 10V, Negative-QTOF | splash10-0059-6900000000-491964469e34c8b797d3 | 2016-08-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Barbituric acid 20V, Negative-QTOF | splash10-0006-9000000000-6bad946cb9132732634e | 2016-08-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Barbituric acid 40V, Negative-QTOF | splash10-0006-9000000000-b2a8b5aa5f0c3f979744 | 2016-08-03 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Barbituric acid 10V, Positive-QTOF | splash10-004i-1900000000-cdefdcd922e108c6d3aa | 2021-09-21 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Barbituric acid 20V, Positive-QTOF | splash10-002o-9200000000-e88c70650db76c01b021 | 2021-09-21 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Barbituric acid 40V, Positive-QTOF | splash10-014l-9000000000-6788917dd71900ff4a84 | 2021-09-21 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Barbituric acid 10V, Negative-QTOF | splash10-004l-5900000000-69a714f826072ea5da2a | 2021-09-25 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Barbituric acid 20V, Negative-QTOF | splash10-0006-9000000000-a2a0aae677316906679f | 2021-09-25 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Barbituric acid 40V, Negative-QTOF | splash10-0006-9000000000-90726b17dc36e29c5299 | 2021-09-25 | Wishart Lab | View Spectrum |
NMR SpectraSpectrum Type | Description | Deposition Date | Source | View |
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Predicted 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum |
IR SpectraSpectrum Type | Description | Deposition Date | Source | View |
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Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M-H]-) | 2023-02-04 | FELIX lab | View Spectrum | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+) | 2023-02-04 | FELIX lab | View Spectrum | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+) | 2023-02-04 | FELIX lab | View Spectrum |
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