Record Information |
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Version | 5.0 |
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Status | Detected and Quantified |
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Creation Date | 2006-05-22 14:17:30 UTC |
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Update Date | 2023-02-21 17:16:01 UTC |
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HMDB ID | HMDB0001987 |
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Secondary Accession Numbers | |
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Metabolite Identification |
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Common Name | 2-Hydroxy-2-methylbutyric acid |
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Description | 2-Hydroxy-2-methylbutyric acid, also known as (+/-)-2-hydroxy-2-methylbutanoate or 2-methyl-2-hydroxybutyric acid, belongs to the class of organic compounds known as hydroxy fatty acids. These are fatty acids in which the chain bears a hydroxyl group. 2-Hydroxy-2-methylbutyric acid is a very hydrophobic molecule, practically insoluble in water, and relatively neutral. |
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Structure | InChI=1S/C5H10O3/c1-3-5(2,8)4(6)7/h8H,3H2,1-2H3,(H,6,7) |
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Synonyms | Value | Source |
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2-Hydroxy-2-methylbutyrate | Generator | (+/-)-2-hydroxy-2-methylbutanoate | HMDB | (+/-)-2-hydroxy-2-methylbutanoic acid | HMDB | (+/-)-2-hydroxy-2-methylbutyric acid | HMDB | (+/-)-a-hydroxy-a-methylbutyric acid | HMDB | (+/-)-alpha-hydroxy-alpha-methylbutyric acid | HMDB | 2-Hydroxy-2-methyl butyrate | HMDB | 2-Hydroxy-2-methyl butyric acid | HMDB | 2-Hydroxy-2-methyl-butanoate | HMDB | 2-Hydroxy-2-methyl-butanoic acid | HMDB | 2-Hydroxy-2-methyl-butyrate | HMDB, Generator | 2-Hydroxy-2-methyl-butyric acid | HMDB | 2-Hydroxy-2-methyl-N-butyrate | HMDB | 2-Hydroxy-2-methyl-N-butyric acid | HMDB | 2-Hydroxy-2-methylbutanoate | HMDB | 2-Hydroxy-2-methylbutanoic acid | HMDB | 2-Methyl-2-hydroxybutyric acid | HMDB | a-Hydroxy-a-methyl-butyric acid | HMDB | a-Hydroxy-a-methylbutyric acid | HMDB | alpha-Hydroxy-alpha-methyl-butyric acid | HMDB | alpha-Hydroxy-alpha-methylbutyric acid | HMDB | 2-Hydroxy-2-methylbutyric acid | MeSH |
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Chemical Formula | C5H10O3 |
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Average Molecular Weight | 118.1311 |
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Monoisotopic Molecular Weight | 118.062994186 |
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IUPAC Name | 2-hydroxy-2-methylbutanoic acid |
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Traditional Name | 2-hydroxy-2-methylbutyric acid |
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CAS Registry Number | 3739-30-8 |
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SMILES | CCC(C)(O)C(O)=O |
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InChI Identifier | InChI=1S/C5H10O3/c1-3-5(2,8)4(6)7/h8H,3H2,1-2H3,(H,6,7) |
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InChI Key | MBIQENSCDNJOIY-UHFFFAOYSA-N |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as hydroxy fatty acids. These are fatty acids in which the chain bears a hydroxyl group. |
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Kingdom | Organic compounds |
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Super Class | Lipids and lipid-like molecules |
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Class | Fatty Acyls |
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Sub Class | Fatty acids and conjugates |
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Direct Parent | Hydroxy fatty acids |
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Alternative Parents | |
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Substituents | - Branched fatty acid
- Hydroxy fatty acid
- Methyl-branched fatty acid
- Alpha-hydroxy acid
- Hydroxy acid
- Tertiary alcohol
- Monocarboxylic acid or derivatives
- Carboxylic acid
- Carboxylic acid derivative
- Organooxygen compound
- Carbonyl group
- Alcohol
- Hydrocarbon derivative
- Organic oxide
- Organic oxygen compound
- 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 | 74 °C | 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 UnderivatizedChromatographic Method | Retention Time | Reference |
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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. | 1.83 minutes | 32390414 | Predicted by Siyang on May 30, 2022 | 9.9499 minutes | 33406817 | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 2.88 minutes | 32390414 | AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 107.0 seconds | 40023050 | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 1129.8 seconds | 40023050 | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 342.6 seconds | 40023050 | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 90.0 seconds | 40023050 | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 195.9 seconds | 40023050 | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 56.7 seconds | 40023050 | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 361.2 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 | 420.5 seconds | 40023050 | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 113.9 seconds | 40023050 | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 675.9 seconds | 40023050 | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 217.0 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 | 881.7 seconds | 40023050 | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 241.3 seconds | 40023050 | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 247.2 seconds | 40023050 | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 484.3 seconds | 40023050 | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 291.6 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 | 168.0 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatizedDerivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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2-Hydroxy-2-methylbutyric acid,1TMS,isomer #1 | CCC(C)(O[Si](C)(C)C)C(=O)O | 1117.4 | Semi standard non polar | 33892256 | 2-Hydroxy-2-methylbutyric acid,1TMS,isomer #2 | CCC(C)(O)C(=O)O[Si](C)(C)C | 1005.9 | Semi standard non polar | 33892256 | 2-Hydroxy-2-methylbutyric acid,2TMS,isomer #1 | CCC(C)(O[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1139.7 | Semi standard non polar | 33892256 | 2-Hydroxy-2-methylbutyric acid,1TBDMS,isomer #1 | CCC(C)(O[Si](C)(C)C(C)(C)C)C(=O)O | 1351.3 | Semi standard non polar | 33892256 | 2-Hydroxy-2-methylbutyric acid,1TBDMS,isomer #2 | CCC(C)(O)C(=O)O[Si](C)(C)C(C)(C)C | 1243.9 | Semi standard non polar | 33892256 | 2-Hydroxy-2-methylbutyric acid,2TBDMS,isomer #1 | CCC(C)(O[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 1608.6 | Semi standard non polar | 33892256 |
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Disease References | tert-Amyl-methyl ether exposed |
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- Amberg A, Rosner E, Dekant W: Biotransformation and kinetics of excretion of tert-amyl-methyl ether in humans and rats after inhalation exposure. Toxicol Sci. 2000 Jun;55(2):274-83. [PubMed:10828258 ]
| Eosinophilic esophagitis |
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- Slae, M., Huynh, H., Wishart, D.S. (2014). Analysis of 30 normal pediatric urine samples via NMR spectroscopy (unpublished work). NA.
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General References | - Holmes E, Foxall PJ, Spraul M, Farrant RD, Nicholson JK, Lindon JC: 750 MHz 1H NMR spectroscopy characterisation of the complex metabolic pattern of urine from patients with inborn errors of metabolism: 2-hydroxyglutaric aciduria and maple syrup urine disease. J Pharm Biomed Anal. 1997 Jul;15(11):1647-59. [PubMed:9260660 ]
- Amberg A, Rosner E, Dekant W: Biotransformation and kinetics of excretion of tert-amyl-methyl ether in humans and rats after inhalation exposure. Toxicol Sci. 2000 Jun;55(2):274-83. [PubMed:10828258 ]
- Fu X, Kimura M, Iga M, Yamaguchi S: Gas chromatographic-mass spectrometric screening for organic acidemias using dried urine filter paper: determination of alpha-ketoacids. J Chromatogr B Biomed Sci Appl. 2001 Jul 5;758(1):87-94. [PubMed:11482739 ]
- Dekant W, Bernauer U, Rosner E, Amberg A: Biotransformation of MTBE, ETBE, and TAME after inhalation or ingestion in rats and humans. Res Rep Health Eff Inst. 2001 May;(102):29-71; discussion 95-109. [PubMed:11504147 ]
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