Record Information |
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Version | 5.0 |
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Status | Detected and Quantified |
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Creation Date | 2008-09-16 13:19:52 UTC |
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Update Date | 2022-03-07 02:50:54 UTC |
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HMDB ID | HMDB0010378 |
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Secondary Accession Numbers | |
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Metabolite Identification |
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Common Name | 5,8,11-Eicosatrienoic acid |
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Description | 5,8,11-Eicosatrienoic acid (Mead acid) is a carboxylic acid with a 20-carbon chain and three methylene-interrupted cis double bonds. The first double bond is located at the ninth carbon from the omega end. In physiological literature, it is given the name 20:3(n-9). In the presence of lipoxygenase, Mead acid can form various hydroxy products (HETE). It is the only polyunsaturated fatty acid that the body can make de novo. Its elevated presence in the blood is an indication of essential fatty acid (EFA)deficiency. During dietary EFA insufficiency, especially arachidonic acid deficiency, the body will make Mead acid by the elongation and desaturation of oleic acid. (Wikipedia). |
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Structure | CCCCCCCC\C=C/C\C=C/C\C=C/CCCC(O)=O InChI=1S/C20H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20(21)22/h9-10,12-13,15-16H,2-8,11,14,17-19H2,1H3,(H,21,22)/b10-9-,13-12-,16-15- |
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Synonyms | Value | Source |
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(5Z,8Z,11Z)-Eicosa-5,8,11-trienoic acid | ChEBI | (5Z,8Z,11Z)-Eicosatrienoic acid | ChEBI | 5Z,8Z,11Z-Eicosatrienoic acid | ChEBI | 5Z,8Z,11Z-Icosatrienoic acid | ChEBI | all-cis-Eicosa-5,8,11-trienoic acid | ChEBI | all-cis-Icosa-5,8,11-trienoic acid | ChEBI | C20:3N-9,12,15 | ChEBI | ETrE(5Z,8Z,11Z) | ChEBI | Mead acid | ChEBI | (5Z,8Z,11Z)-Eicosa-5,8,11-trienoate | Generator | (5Z,8Z,11Z)-Eicosatrienoate | Generator | 5Z,8Z,11Z-Eicosatrienoate | Generator | 5Z,8Z,11Z-Icosatrienoate | Generator | all-cis-Eicosa-5,8,11-trienoate | Generator | all-cis-Icosa-5,8,11-trienoate | Generator | 5,8,11-Eicosatrienoate | Generator | 5,8,11-Eicosatrienoic acid | MeSH, HMDB | ETrA acid | MeSH, HMDB | (5Z,8Z,11Z)-Icosatrienoate | Generator, HMDB |
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Chemical Formula | C20H34O2 |
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Average Molecular Weight | 306.4828 |
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Monoisotopic Molecular Weight | 306.255880332 |
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IUPAC Name | (5Z,8Z,11Z)-icosa-5,8,11-trienoic acid |
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Traditional Name | mead acid |
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CAS Registry Number | 20590-32-3 |
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SMILES | CCCCCCCC\C=C/C\C=C/C\C=C/CCCC(O)=O |
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InChI Identifier | InChI=1S/C20H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20(21)22/h9-10,12-13,15-16H,2-8,11,14,17-19H2,1H3,(H,21,22)/b10-9-,13-12-,16-15- |
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InChI Key | UNSRRHDPHVZAHH-YOILPLPUSA-N |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as long-chain fatty acids. These are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms. |
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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 | Long-chain fatty acids |
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Alternative Parents | |
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Substituents | - Long-chain fatty acid
- Unsaturated fatty acid
- Straight chain fatty acid
- Monocarboxylic acid or derivatives
- Carboxylic acid
- Carboxylic acid derivative
- Organic oxygen compound
- Organic oxide
- Hydrocarbon derivative
- Organooxygen compound
- Carbonyl group
- 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 | Not Available |
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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 Kovats Retention IndicesUnderivatizedDerivatized |
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| GC-MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Predicted GC-MS | Predicted GC-MS Spectrum - 5,8,11-Eicosatrienoic acid GC-MS (Non-derivatized) - 70eV, Positive | splash10-000x-9270000000-463f91799534dd9ba1f8 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 5,8,11-Eicosatrienoic acid GC-MS (1 TMS) - 70eV, Positive | splash10-0209-9241000000-4adccb37d26c8a88baaf | 2017-10-06 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 5,8,11-Eicosatrienoic 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 - 5,8,11-Eicosatrienoic acid 10V, Positive-QTOF | splash10-000i-0092000000-602cfb1975c490e3881a | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 20V, Positive-QTOF | splash10-03ds-3490000000-1350ff64ed6aa1f5820a | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 40V, Positive-QTOF | splash10-05mp-9860000000-d900ed087b26c9530957 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 10V, Negative-QTOF | splash10-0a4i-0039000000-659857ef79dd2148ca8d | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 20V, Negative-QTOF | splash10-0bti-1095000000-43d44a6c226a6b2adffe | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 40V, Negative-QTOF | splash10-0a4l-9140000000-3585933dc08c1124a8e8 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 10V, Positive-QTOF | splash10-0a4r-3496000000-59740f5ce9cee4674e11 | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 20V, Positive-QTOF | splash10-0a4r-9841000000-2a63f76b4744a3c7d280 | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 40V, Positive-QTOF | splash10-05nf-9300000000-2f17ca6393b3b1176c7a | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 10V, Negative-QTOF | splash10-0a4i-0019000000-22be6eda7da2c017414e | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 20V, Negative-QTOF | splash10-0a4i-2069000000-f9c4ad2fc23eeba4a000 | 2021-09-24 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 40V, Negative-QTOF | splash10-052f-9120000000-d8a09defc53f04953c55 | 2021-09-24 | Wishart Lab | View Spectrum |
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