| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2008-08-13 15:46:23 UTC |
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| Update Date | 2022-03-07 02:49:34 UTC |
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| HMDB ID | HMDB0006855 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | (S)-2-Acetolactate |
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| Description | (S)-2-Acetolactate, also known as b-dyn a, belongs to the class of organic compounds known as short-chain keto acids and derivatives. These are keto acids with an alkyl chain the contains less than 6 carbon atoms (S)-2-Acetolactate is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral (S)-2-Acetolactate exists in all living species, ranging from bacteria to humans. Outside of the human body, (S)-2-Acetolactate has been detected, but not quantified in, several different foods, such as european chestnuts, rosemaries, half-highbush blueberries, pineapples, and chinese water chestnuts. This could make (S)-2-acetolactate a potential biomarker for the consumption of these foods. |
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| Structure | InChI=1S/C5H8O4/c1-3(6)5(2,9)4(7)8/h9H,1-2H3,(H,7,8)/t5-/m0/s1 |
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| Synonyms | | Value | Source |
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| (S)-2-Hydroxy-2-methyl-3-oxobutanoate | ChEBI | | (2S)-2-Hydroxy-2-methyl-3-oxobutanoate | Kegg | | (S)-2-Hydroxy-2-methyl-3-oxobutanoic acid | Generator | | (2S)-2-Hydroxy-2-methyl-3-oxobutanoic acid | Generator | | (S)-2-Acetolactic acid | Generator | | 13-Biotinyl-lys-dynorphin a amide (1-13) | HMDB | | b-DYN a | HMDB | | (S)-alpha-Acetolactic acid | HMDB | | (S)-α-Acetolactic acid | HMDB | | 2-Acetolactic acid | HMDB | | 2-Hydroxy-2-methyl-3-oxobutanoic acid | HMDB | | Acetolactic acid | HMDB |
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| Chemical Formula | C5H8O4 |
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| Average Molecular Weight | 132.1146 |
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| Monoisotopic Molecular Weight | 132.042258744 |
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| IUPAC Name | (2S)-2-hydroxy-2-methyl-3-oxobutanoic acid |
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| Traditional Name | acetolactic acid |
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| CAS Registry Number | 71698-08-3 |
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| SMILES | CC(=O)[C@](C)(O)C(O)=O |
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| InChI Identifier | InChI=1S/C5H8O4/c1-3(6)5(2,9)4(7)8/h9H,1-2H3,(H,7,8)/t5-/m0/s1 |
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| InChI Key | NMDWGEGFJUBKLB-YFKPBYRVSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as short-chain keto acids and derivatives. These are keto acids with an alkyl chain the contains less than 6 carbon atoms. |
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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 | Short-chain keto acids and derivatives |
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| Direct Parent | Short-chain keto acids and derivatives |
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| Alternative Parents | |
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| Substituents | - Beta-keto acid
- Branched fatty acid
- Hydroxy fatty acid
- Short-chain keto acid
- Methyl-branched fatty acid
- Alpha-hydroxy acid
- Fatty acyl
- Acyloin
- Beta-hydroxy ketone
- Hydroxy acid
- Tertiary alcohol
- Alpha-hydroxy ketone
- Ketone
- Carboxylic acid derivative
- Monocarboxylic acid or derivatives
- Carboxylic acid
- Carbonyl group
- Alcohol
- Organic oxygen compound
- Organooxygen compound
- Hydrocarbon derivative
- Organic oxide
- Aliphatic acyclic compound
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| Molecular Framework | Aliphatic acyclic 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 | |
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| Role | |
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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 | Not Available | Not Available | | Boiling Point | Not Available | Not Available | | Water Solubility | Not Available | Not Available | | LogP | Not Available | Not Available |
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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 Retention Times Underivatized| Chromatographic Method | Retention Time | Reference |
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| Predicted by Siyang on May 30, 2022 | 9.6747 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 4.34 minutes | 32390414 | | AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 125.4 seconds | 40023050 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 1001.0 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 342.4 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 75.0 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 203.8 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 47.3 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 289.8 seconds | 40023050 | | BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid | 341.5 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 121.1 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 640.0 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 148.1 seconds | 40023050 | | UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid | 854.6 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 219.1 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 266.5 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 544.7 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 275.2 seconds | 40023050 | | Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water | 219.3 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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| (S)-2-Acetolactate,1TMS,isomer #1 | CC(=O)[C@](C)(O[Si](C)(C)C)C(=O)O | 1211.7 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,1TMS,isomer #2 | CC(=O)[C@](C)(O)C(=O)O[Si](C)(C)C | 1109.3 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,1TMS,isomer #3 | C=C(O[Si](C)(C)C)[C@](C)(O)C(=O)O | 1183.6 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,2TMS,isomer #1 | CC(=O)[C@](C)(O[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1241.3 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,2TMS,isomer #2 | C=C(O[Si](C)(C)C)[C@](C)(O[Si](C)(C)C)C(=O)O | 1305.4 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,2TMS,isomer #3 | C=C(O[Si](C)(C)C)[C@](C)(O)C(=O)O[Si](C)(C)C | 1215.9 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,3TMS,isomer #1 | C=C(O[Si](C)(C)C)[C@](C)(O[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1354.7 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,3TMS,isomer #1 | C=C(O[Si](C)(C)C)[C@](C)(O[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1357.5 | Standard non polar | 33892256 | | (S)-2-Acetolactate,3TMS,isomer #1 | C=C(O[Si](C)(C)C)[C@](C)(O[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1341.1 | Standard polar | 33892256 | | (S)-2-Acetolactate,1TBDMS,isomer #1 | CC(=O)[C@](C)(O[Si](C)(C)C(C)(C)C)C(=O)O | 1444.9 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,1TBDMS,isomer #2 | CC(=O)[C@](C)(O)C(=O)O[Si](C)(C)C(C)(C)C | 1354.7 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,1TBDMS,isomer #3 | C=C(O[Si](C)(C)C(C)(C)C)[C@](C)(O)C(=O)O | 1414.7 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,2TBDMS,isomer #1 | CC(=O)[C@](C)(O[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 1690.0 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,2TBDMS,isomer #2 | C=C(O[Si](C)(C)C(C)(C)C)[C@](C)(O[Si](C)(C)C(C)(C)C)C(=O)O | 1749.4 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,2TBDMS,isomer #3 | C=C(O[Si](C)(C)C(C)(C)C)[C@](C)(O)C(=O)O[Si](C)(C)C(C)(C)C | 1692.1 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,3TBDMS,isomer #1 | C=C(O[Si](C)(C)C(C)(C)C)[C@](C)(O[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2005.9 | Semi standard non polar | 33892256 | | (S)-2-Acetolactate,3TBDMS,isomer #1 | C=C(O[Si](C)(C)C(C)(C)C)[C@](C)(O[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 1994.3 | Standard non polar | 33892256 | | (S)-2-Acetolactate,3TBDMS,isomer #1 | C=C(O[Si](C)(C)C(C)(C)C)[C@](C)(O[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 1798.0 | Standard polar | 33892256 |
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| GC-MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Predicted GC-MS | Predicted GC-MS Spectrum - (S)-2-Acetolactate GC-MS (Non-derivatized) - 70eV, Positive | splash10-0006-9000000000-0c1fe460a2ec8a1a255d | 2016-09-22 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - (S)-2-Acetolactate GC-MS (2 TMS) - 70eV, Positive | splash10-0303-9780000000-ed6c7b366835f2a4a9c0 | 2017-10-06 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - (S)-2-Acetolactate GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |
MS/MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - (S)-2-Acetolactate 10V, Positive-QTOF | splash10-001i-5900000000-a14af8bd96fdcce5e84f | 2015-09-14 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - (S)-2-Acetolactate 20V, Positive-QTOF | splash10-015l-9400000000-53c1f10a4a9b63a25574 | 2015-09-14 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - (S)-2-Acetolactate 40V, Positive-QTOF | splash10-01b9-9000000000-03c96ef4ce31ab174fdd | 2015-09-14 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - (S)-2-Acetolactate 10V, Negative-QTOF | splash10-0019-9700000000-641c507686f1b0493bde | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - (S)-2-Acetolactate 20V, Negative-QTOF | splash10-000i-9000000000-cd68c82882667330e329 | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - (S)-2-Acetolactate 40V, Negative-QTOF | splash10-0079-9000000000-f0530bd3c4f32baa697c | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - (S)-2-Acetolactate 10V, Negative-QTOF | splash10-000i-9300000000-0c998add67e750d36bc4 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - (S)-2-Acetolactate 20V, Negative-QTOF | splash10-000i-9200000000-3e8a380405cb5b02d1d7 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - (S)-2-Acetolactate 40V, Negative-QTOF | splash10-0006-9000000000-aeeb164d9240ff735bc5 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - (S)-2-Acetolactate 10V, Positive-QTOF | splash10-00ke-9200000000-c8b983df55a14da2898a | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - (S)-2-Acetolactate 20V, Positive-QTOF | splash10-0006-9000000000-79267be0bc618dc8018f | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - (S)-2-Acetolactate 40V, Positive-QTOF | splash10-0006-9000000000-cd1679ff8fbd31e9b90f | 2021-09-25 | Wishart Lab | View Spectrum |
NMR Spectra| Spectrum Type | Description | Deposition Date | Source | View |
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| Predicted 1D NMR | 13C NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum |
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