에틸트라이메틸사이클로펜텐부텐올

2-Ethyl-4-(2,2,3-trimethylcyclopent-3-en-yl)-but-2-en-1-ol is amixture of the (E)- and (Z)-isomers. It is a pale yellow liquid with a powerful sandalwood odor and a slight rose nuance. The mixture can be prepared starting from α-campholenaldehyde and butanal. The intermediate unsaturated aldehyde is partially hydrogenated to give the title alcohol. It is used in perfume compositions for cosmetics, soaps, and detergents.