Isophytol is a terpenoid alcohol that is used as a fragrance and as an intermediate in the production of vitamin E and K1.

[3] It can be synthesized in six steps from pseudoionone and propargyl alcohol.

[4] Total synthesis begins with the combination of acetylene and acetone to produce 3-methyl-1-butyn-3-ol.

The steps of adding acetylene and then isopropenyl methyl ether and hydrogenating the product are done twice (this involves an intermediate of pseudoionone); then acetylene is added to create dehydroisophytol.

More than 95% of the less than 40 tons used annually in consumer products is as a fragrance.