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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

The metabolism of 2-ethylhexanol in rats.

1. 2-Ethylhexanol was efficiently absorbed following oral administration to rats. 14C associated with 2-ethyl[1-14C]hexanol was rapidly excreted in respiratory CO2 (6-7%), faeces (8-9%) and urine (80-82%), with essentially complete elimination by 28 h after administration. 2. The amount of label recovered in 14CO2 matched the amount of unlabelled 2-heptanone plus 4-heptanone recovered from urine, suggesting that both types of metabolite may have been derived form the major urinary metabolite, 2-ethylhexanoic acid, by decarboxylation following partial beta-oxidation. The 14CO2 appeared not to be derived from acetate (urinary acetic acid and liver and brain cholesterol were not labelled) or by reductive decarboxylation (heptane was not present.) 3. Other identified metabolites were 2-ethyl-5-hydroxyhexanoic acid, 2-ethyl-5-ketohexanoic acid, and 2-ethyl-1,6-hexanedioic acid. Only about 3% of the ethylhexanol was excreted unchanged. 4. Ethylhexanol was a competitive inhibitor of yeast alcohol dehydrogenase, but a good substrate for horse alcohol dehydrogenase. 5. Other relationships between metabolism and toxicity of 2-ethylhexanol are discussed.[1]


  1. The metabolism of 2-ethylhexanol in rats. Albro, P.W. Xenobiotica (1975) [Pubmed]
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