Oleyl alcohol
Oleyl alcohol, octadecenol, or cis-9-octadecen-1-ol, is an unsaturated fatty alcohol with the chemical formula C18H36O or CH3(CH2)7-CH=CH-(CH2)8OH.
It can be produced by the hydrogenation of oleic acid esters; which can be obtained naturally from beef fat, fish oil and in particular olive oil (from which it gains its name).