Record Information |
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Version | 5.0 |
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Status | Detected but not Quantified |
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Creation Date | 2007-04-12 20:13:40 UTC |
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Update Date | 2023-02-21 17:17:11 UTC |
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HMDB ID | HMDB0006006 |
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Secondary Accession Numbers | |
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Metabolite Identification |
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Common Name | Isobutanol |
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Description | Isobutanol is an aliphatic alcohol. Isobutanol is a colorless, flammable, organic compound with a characteristic smell. Isobutanol is widely used in industry, as a solvent in chemical reactions, as well as being a useful starting material for organic synthesis. Isobutanol is a flammable liquid that should be stored and used in well-ventilated areas. It is moderately irritating to the skin and greatly irritating to the eyes, mucous membranes and respiratory tract. Exposure to high concentrations of its vapour can cause temporary narcosis. Isobutanol is occasionally found as a volatile component of urine and arises from gut microbial metabolism. Isobutanol is used as one of the markers to measure occupational exposure to a mixture of solvents. Aliphatic alcohols levels increase in both diabetes mellitus and insulin-dependent diabetes patients. (PMID:5556886 , 2477620 , 9143482 , 7627316 , 2288731 ). Isobutanol is a microbial metabolite found in Clostridium, Cupriavidus, Escherichia, Geobacillus, Saccharomyces and Synechococcus (PMID:19946322 ). |
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Structure | InChI=1S/C4H10O/c1-4(2)3-5/h4-5H,3H2,1-2H3 |
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Synonyms | Value | Source |
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1-Hydroxymethylpropane | ChEBI | 2-Methyl-1-propanol | ChEBI | 2-Methylpropanol | ChEBI | I-butanol | ChEBI | I-butyl alcohol | ChEBI | IBA | ChEBI | Iso-butyl alcohol | ChEBI | Iso-C4H9OH | ChEBI | Isobutyl alcohol | ChEBI | Isobutylalkohol | ChEBI | Isopropylcarbinol | ChEBI | 2-Methyl propanol | HMDB | 2-Methyl-1-propanyl alcohol | HMDB | 2-Methylpropan-1-ol | HMDB | 2-MethylpropanoI | HMDB | 2-Methylpropanol-1 | HMDB | 2-Methylpropyl alcohol | HMDB | Alcool isobutylique | HMDB | Isopropyl carbitol | HMDB | Methyl-2 propanol-1 | HMDB | Isobutyl alcohol, aluminum salt | MeSH, HMDB | Isobutyl alcohol, sodium salt | MeSH, HMDB | Isobutyl alcohol, titanium (+4) salt | MeSH, HMDB | Isobutanol | MeSH |
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Chemical Formula | C4H10O |
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Average Molecular Weight | 74.1216 |
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Monoisotopic Molecular Weight | 74.073164942 |
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IUPAC Name | 2-methylpropan-1-ol |
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Traditional Name | isobutanol |
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CAS Registry Number | 78-83-1 |
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SMILES | CC(C)CO |
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InChI Identifier | InChI=1S/C4H10O/c1-4(2)3-5/h4-5H,3H2,1-2H3 |
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InChI Key | ZXEKIIBDNHEJCQ-UHFFFAOYSA-N |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as primary alcohols. Primary alcohols are compounds comprising the primary alcohol functional group, with the general structure RCOH (R=alkyl, aryl). |
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Kingdom | Organic compounds |
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Super Class | Organic oxygen compounds |
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Class | Organooxygen compounds |
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Sub Class | Alcohols and polyols |
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Direct Parent | Primary alcohols |
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Alternative Parents | |
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Substituents | - Hydrocarbon derivative
- Primary alcohol
- 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 | |
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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 | Liquid |
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Experimental Molecular Properties | Property | Value | Reference |
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Melting Point | -108 °C | Not Available | Boiling Point | 108.00 to 109.00 °C. @ 760.00 mm Hg | The Good Scents Company Information System | Water Solubility | 85 mg/mL at 25 °C | Not Available | LogP | 0.76 | HANSCH,C ET AL. (1995) |
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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 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 - Isobutanol EI-B (Non-derivatized) | splash10-0006-9000000000-7f721031d45407da0ffa | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Isobutanol EI-B (Non-derivatized) | splash10-0006-9000000000-8f50f8925987fafa9f6e | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Isobutanol EI-B (Non-derivatized) | splash10-0006-9000000000-a022508915e78517db51 | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Isobutanol EI-B (Non-derivatized) | splash10-0006-9000000000-7f721031d45407da0ffa | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Isobutanol EI-B (Non-derivatized) | splash10-0006-9000000000-8f50f8925987fafa9f6e | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | Experimental GC-MS | GC-MS Spectrum - Isobutanol EI-B (Non-derivatized) | splash10-0006-9000000000-a022508915e78517db51 | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Isobutanol GC-MS (Non-derivatized) - 70eV, Positive | splash10-0006-9000000000-c81d9b093b562948ccc2 | 2016-09-22 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Isobutanol GC-MS (1 TMS) - 70eV, Positive | splash10-0fnl-9300000000-9cc13c092f82e7caebed | 2017-10-06 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Isobutanol GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Isobutanol GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | MS | Mass Spectrum (Electron Ionization) | splash10-0006-9000000000-df76ec6cf6a8bfca3cf4 | 2015-03-01 | Not Available | 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 - Isobutanol 10V, Positive-QTOF | splash10-056r-9000000000-51f6abf0e4afb219bd9d | 2015-05-26 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isobutanol 20V, Positive-QTOF | splash10-0a4i-9000000000-5c3b0b379d64147f0e14 | 2015-05-26 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isobutanol 40V, Positive-QTOF | splash10-0a4i-9000000000-aed2ffb2e0c694af93ea | 2015-05-26 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isobutanol 10V, Negative-QTOF | splash10-00di-9000000000-4648efd7a78339de7e6c | 2015-05-27 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isobutanol 20V, Negative-QTOF | splash10-00di-9000000000-5d4c9a7c73ad8673a5e5 | 2015-05-27 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isobutanol 40V, Negative-QTOF | splash10-0ab9-9000000000-c25bee7b5f5bbb13555b | 2015-05-27 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isobutanol 10V, Positive-QTOF | splash10-0a4i-9000000000-93c1347da9e7b93b1d4b | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isobutanol 20V, Positive-QTOF | splash10-0a4i-9000000000-ecfc77b9101748cfda5b | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isobutanol 40V, Positive-QTOF | splash10-052f-9000000000-27a65778ea4120a1bdbc | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isobutanol 10V, Negative-QTOF | splash10-00di-9000000000-4745be1f2771d5de1ace | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isobutanol 20V, Negative-QTOF | splash10-00di-9000000000-484b0e56f4502be3a0d3 | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isobutanol 40V, Negative-QTOF | splash10-0ab9-9000000000-737dc8aa570b134872af | 2021-09-24 | Wishart Lab | View Spectrum |
NMR SpectraSpectrum Type | Description | Deposition Date | Source | View |
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Predicted 1D NMR | 13C NMR Spectrum (1D, 100 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 100 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 1000 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 200 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 200 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 300 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 300 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 400 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 400 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 500 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 500 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 600 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 600 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 700 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 700 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 800 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 800 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 900 MHz, H2O, predicted) | 2022-08-17 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 900 MHz, H2O, predicted) | 2022-08-17 | 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+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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Disease References | Ulcerative colitis |
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- Garner CE, Smith S, de Lacy Costello B, White P, Spencer R, Probert CS, Ratcliffe NM: Volatile organic compounds from feces and their potential for diagnosis of gastrointestinal disease. FASEB J. 2007 Jun;21(8):1675-88. Epub 2007 Feb 21. [PubMed:17314143 ]
- Ahmed I, Greenwood R, Costello Bde L, Ratcliffe NM, Probert CS: An investigation of fecal volatile organic metabolites in irritable bowel syndrome. PLoS One. 2013;8(3):e58204. doi: 10.1371/journal.pone.0058204. Epub 2013 Mar 13. [PubMed:23516449 ]
| Nonalcoholic fatty liver disease |
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- Raman M, Ahmed I, Gillevet PM, Probert CS, Ratcliffe NM, Smith S, Greenwood R, Sikaroodi M, Lam V, Crotty P, Bailey J, Myers RP, Rioux KP: Fecal microbiome and volatile organic compound metabolome in obese humans with nonalcoholic fatty liver disease. Clin Gastroenterol Hepatol. 2013 Jul;11(7):868-75.e1-3. doi: 10.1016/j.cgh.2013.02.015. Epub 2013 Feb 27. [PubMed:23454028 ]
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General References | - Zlatkis A, Liebich HM: Profile of volatile metabolites in human urine. Clin Chem. 1971 Jul;17(7):592-4. [PubMed:5556886 ]
- Bilzer N, Schmutte P, Jehs M, Penners BM: [Kinetics of aliphatic alcohols (methanol, propanol-1 and isobutanol) in the presence of alcohol in the human body]. Blutalkohol. 1990 Nov;27(6):385-409. [PubMed:2288731 ]
- Inglik N, Rudenko BA, Kakhnovskii IM, Koroleva TV: [Gas chromatographic study of the composition of the volatile components of the urine in normal subjects and patients with diabetes mellitus]. Lab Delo. 1989;(8):24-7. [PubMed:2477620 ]
- Norback D, Bjornsson E, Janson C, Widstrom J, Boman G: Asthmatic symptoms and volatile organic compounds, formaldehyde, and carbon dioxide in dwellings. Occup Environ Med. 1995 Jun;52(6):388-95. [PubMed:7627316 ]
- Kruszewski FH, Walker TL, DiPasquale LC: Evaluation of a human corneal epithelial cell line as an in vitro model for assessing ocular irritation. Fundam Appl Toxicol. 1997 Apr;36(2):130-40. [PubMed:9143482 ]
- Evenepoel P, Meijers BK, Bammens BR, Verbeke K: Uremic toxins originating from colonic microbial metabolism. Kidney Int Suppl. 2009 Dec;(114):S12-9. doi: 10.1038/ki.2009.402. [PubMed:19946322 ]
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