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Names | |
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IUPAC name (Z)-dec-4-enoic acid | |
Other names 4-Decenoic acid | |
Identifiers | |
3D model (JSmol) | |
ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.007.295 |
EC Number |
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PubChem CID | |
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CompTox Dashboard (EPA) | |
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Properties | |
C10H18O2 | |
Molar mass | 170.252 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Obtusilic acid is a linear fatty acid composed of 10 carbon atoms, with one double bond [1] in the position 4=5 in cis-configuration. This is an Omega-6 acid of little nutritional interest with abbreviated notation 10:1 (n-6). [2] [3]
The acid was initially isolated in the seed oil of Lindera obtusiloba , from which it takes its common name, in 1937 by the Japanese scientist Toyama and confirmed in the same year by Saburo Komori and Sei-ichi Ueno. [4] [5]
Lindera obtusiloba oil, Tohaku in Korean, which contains about 4% obtusilic acid, was an oil that Koreans applied to their hair. [6] Obtusilic acid has been isolated from only a few other plants of the family Lauraceae : Lindera praecox (≈5%), Litsea auriculata (≈4%), Lindera citriodora (≈3%).
At room temperature, the acid forms a liquid that boils at 148–150 °C at 13 mmHg. Between 4 °C and 20 °C, it has a density of 0.9197 g/cm³ and a refractive index of 1.4497 at 20 °C. The acid is soluble in benzene and diethyl ether.
An increase in obtusilic acid in human blood and organs has been associated with acyl-CoA dehydrogenase deficiency. [7] [8]