Record Information |
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Version | 5.0 |
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Status | Expected but not Quantified |
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Creation Date | 2005-11-16 15:48:42 UTC |
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Update Date | 2023-02-21 17:14:42 UTC |
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HMDB ID | HMDB0000310 |
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Secondary Accession Numbers | |
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Metabolite Identification |
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Common Name | Methylacetoacetic acid |
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Description | Methylacetoacetic acid, also known as 3-oxo-butanoate or methyl acetylacetate, belongs to the class of organic compounds known as beta-keto acids and derivatives. These are organic compounds containing an aldehyde substituted with a keto group on the C3 carbon atom. Methylacetoacetic acid is an extremely weak basic (essentially neutral) compound (based on its pKa). Methylacetoacetic acid is a citrus, fresh, and fruity tasting compound. Methylacetoacetic acid has been identified in the urine of patients with an inherited deficiency of propionyl-CoA carboxylase (PMID 630060 ), and after isoleucine loading in the diagnosis of 2-methylacetoacetyl-CoA thiolase deficiency. |
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Structure | InChI=1S/C5H8O3/c1-4(6)3-5(7)8-2/h3H2,1-2H3 |
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Synonyms | Value | Source |
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Methylacetoacetate | Generator | 1-Methoxybutane-1,3-dione | HMDB | 3-oxo-Butanoate | HMDB | 3-oxo-Butanoic acid | HMDB | 3-oxo-Butanoic acid methyl ester | HMDB | 3-Oxobutanoate | HMDB | 3-Oxobutanoic acid | HMDB | 3-Oxobutanoic acid methyl ester | HMDB | 3-Oxobutyric acid methyl ester | HMDB | Acetoacetate methyl ester | HMDB | Acetoacetic acid methyl ester | HMDB | Acetoacetic methyl ester | HMDB | Methyl 3-oxobutanoate | HMDB | Methyl 3-oxobutanoic acid | HMDB | Methyl 3-oxobutyrate | HMDB | Methyl acetoacetate | HMDB | Methyl acetylacetate | HMDB | Methyl acetylacetonate | HMDB |
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Chemical Formula | C5H8O3 |
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Average Molecular Weight | 116.1152 |
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Monoisotopic Molecular Weight | 116.047344122 |
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IUPAC Name | methyl 3-oxobutanoate |
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Traditional Name | methyl acetoacetate |
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CAS Registry Number | 105-45-3 |
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SMILES | COC(=O)CC(C)=O |
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InChI Identifier | InChI=1S/C5H8O3/c1-4(6)3-5(7)8-2/h3H2,1-2H3 |
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InChI Key | WRQNANDWMGAFTP-UHFFFAOYSA-N |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as beta-keto acids and derivatives. These are organic compounds containing an aldehyde substituted with a keto group on the C3 carbon atom. |
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Kingdom | Organic compounds |
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Super Class | Organic acids and derivatives |
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Class | Keto acids and derivatives |
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Sub Class | Beta-keto acids and derivatives |
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Direct Parent | Beta-keto acids and derivatives |
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Alternative Parents | |
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Substituents | - Beta-keto acid
- Fatty acid ester
- Fatty acid methyl ester
- 1,3-dicarbonyl compound
- Fatty acyl
- Methyl ester
- Carboxylic acid ester
- Ketone
- Monocarboxylic acid or derivatives
- Carboxylic acid derivative
- Organic oxygen compound
- Organic oxide
- Carbonyl group
- Organooxygen compound
- Hydrocarbon derivative
- Aliphatic acyclic compound
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Molecular Framework | Aliphatic acyclic compounds |
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External Descriptors | Not Available |
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Ontology |
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Physiological effect | |
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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 | Liquid |
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Experimental Molecular Properties | |
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Experimental Chromatographic Properties | Not Available |
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Predicted Molecular Properties | |
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Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Kovats Retention IndicesUnderivatizedDerivatizedDerivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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Methylacetoacetic acid,1TMS,isomer #1 | COC(=O)C=C(C)O[Si](C)(C)C | 1099.9 | Semi standard non polar | 33892256 | Methylacetoacetic acid,1TMS,isomer #1 | COC(=O)C=C(C)O[Si](C)(C)C | 1078.1 | Standard non polar | 33892256 | Methylacetoacetic acid,1TMS,isomer #1 | COC(=O)C=C(C)O[Si](C)(C)C | 1348.5 | Standard polar | 33892256 | Methylacetoacetic acid,1TMS,isomer #2 | C=C(CC(=O)OC)O[Si](C)(C)C | 1054.1 | Semi standard non polar | 33892256 | Methylacetoacetic acid,1TMS,isomer #2 | C=C(CC(=O)OC)O[Si](C)(C)C | 1073.7 | Standard non polar | 33892256 | Methylacetoacetic acid,1TMS,isomer #2 | C=C(CC(=O)OC)O[Si](C)(C)C | 1351.0 | Standard polar | 33892256 | Methylacetoacetic acid,1TBDMS,isomer #1 | COC(=O)C=C(C)O[Si](C)(C)C(C)(C)C | 1313.7 | Semi standard non polar | 33892256 | Methylacetoacetic acid,1TBDMS,isomer #1 | COC(=O)C=C(C)O[Si](C)(C)C(C)(C)C | 1266.7 | Standard non polar | 33892256 | Methylacetoacetic acid,1TBDMS,isomer #1 | COC(=O)C=C(C)O[Si](C)(C)C(C)(C)C | 1522.0 | Standard polar | 33892256 | Methylacetoacetic acid,1TBDMS,isomer #2 | C=C(CC(=O)OC)O[Si](C)(C)C(C)(C)C | 1248.6 | Semi standard non polar | 33892256 | Methylacetoacetic acid,1TBDMS,isomer #2 | C=C(CC(=O)OC)O[Si](C)(C)C(C)(C)C | 1269.1 | Standard non polar | 33892256 | Methylacetoacetic acid,1TBDMS,isomer #2 | C=C(CC(=O)OC)O[Si](C)(C)C(C)(C)C | 1527.5 | Standard polar | 33892256 |
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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 - Methylacetoacetic acid EI-B (Non-derivatized) | splash10-0006-9000000000-9801f4fde1f8c64f6baf | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Methylacetoacetic acid EI-B (Non-derivatized) | splash10-0006-9000000000-e4481e7d9e6ac8fc177b | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Methylacetoacetic acid EI-B (Non-derivatized) | splash10-0006-9000000000-f8789e71041e62cce331 | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Methylacetoacetic acid EI-B (Non-derivatized) | splash10-0006-9100000000-65b70a114483f92cc1f4 | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Methylacetoacetic acid CI-B (Non-derivatized) | splash10-00kr-9300000000-7a638e147c3997a85598 | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Methylacetoacetic acid EI-B (Non-derivatized) | splash10-0006-9000000000-9801f4fde1f8c64f6baf | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Methylacetoacetic acid EI-B (Non-derivatized) | splash10-0006-9000000000-e4481e7d9e6ac8fc177b | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Methylacetoacetic acid EI-B (Non-derivatized) | splash10-0006-9000000000-f8789e71041e62cce331 | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Methylacetoacetic acid EI-B (Non-derivatized) | splash10-0006-9100000000-65b70a114483f92cc1f4 | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Methylacetoacetic acid CI-B (Non-derivatized) | splash10-00kr-9300000000-7a638e147c3997a85598 | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Methylacetoacetic acid GC-MS (Non-derivatized) - 70eV, Positive | splash10-0006-9100000000-869c1574ff891034b665 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Methylacetoacetic acid GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Methylacetoacetic 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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Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylacetoacetic acid Quattro_QQQ 10V, N/A-QTOF (Annotated) | splash10-000l-9100000000-be1b334229aa020fc7e8 | 2012-07-24 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylacetoacetic acid Quattro_QQQ 25V, N/A-QTOF (Annotated) | splash10-0006-9000000000-e512bbad2ab7f1c253a7 | 2012-07-24 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylacetoacetic acid Quattro_QQQ 40V, N/A-QTOF (Annotated) | splash10-0006-9000000000-0627dffba19580aa6a7d | 2012-07-24 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylacetoacetic acid EI-B (HITACHI RMU-7M) , Positive-QTOF | splash10-0006-9000000000-6f423389be91a0d883a2 | 2012-08-31 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylacetoacetic acid EI-B (HITACHI RMU-6M) , Positive-QTOF | splash10-0006-9000000000-e4481e7d9e6ac8fc177b | 2012-08-31 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylacetoacetic acid EI-B (JEOL JMS-D-3000) , Positive-QTOF | splash10-0006-9000000000-970f150ada556d232464 | 2012-08-31 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylacetoacetic acid EI-B (HITACHI RMU-6M) , Positive-QTOF | splash10-0006-9100000000-86a6dd485ea6cf9b0632 | 2012-08-31 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Methylacetoacetic acid CI-B (HITACHI M-80) , Positive-QTOF | splash10-00kr-9300000000-0d967b807194a0d4f189 | 2012-08-31 | HMDB team, MONA | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylacetoacetic acid 10V, Positive-QTOF | splash10-014r-9300000000-e5dc637782adee6c0e04 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylacetoacetic acid 20V, Positive-QTOF | splash10-014j-9100000000-3bc03bc80fc348b48f88 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylacetoacetic acid 40V, Positive-QTOF | splash10-014u-9000000000-ed2c64d5d7629d00368e | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylacetoacetic acid 10V, Negative-QTOF | splash10-014i-8900000000-26833f2c7b71af9eed1f | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylacetoacetic acid 20V, Negative-QTOF | splash10-0aw9-9200000000-d2941bafc6ef6d37ea38 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylacetoacetic acid 40V, Negative-QTOF | splash10-0a59-9000000000-765079c1255f5f8b2907 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylacetoacetic acid 10V, Negative-QTOF | splash10-01bc-9400000000-ac614382ccd32f161a65 | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylacetoacetic acid 20V, Negative-QTOF | splash10-0a4i-9000000000-f50f28ce0031ed1ca1af | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylacetoacetic acid 40V, Negative-QTOF | splash10-0a4i-9000000000-7ab0f1f6abf2d008ff8e | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylacetoacetic acid 10V, Positive-QTOF | splash10-0006-9000000000-d66fe58106ad458e0f71 | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylacetoacetic acid 20V, Positive-QTOF | splash10-0006-9000000000-0c548d0b4e3b334064ce | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Methylacetoacetic acid 40V, Positive-QTOF | splash10-0006-9000000000-87bbaed151efac084591 | 2021-09-24 | Wishart Lab | View Spectrum |
NMR SpectraSpectrum Type | Description | Deposition Date | Source | View |
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Experimental 1D NMR | 1H NMR Spectrum (1D, 600 MHz, H2O, experimental) | 2012-12-04 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-16 | Wishart Lab | View Spectrum | Experimental 2D NMR | [1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental) | 2012-12-05 | 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]+) | 2023-02-03 | FELIX lab | View Spectrum | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+) | 2023-02-03 | FELIX lab | View Spectrum |
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