5182-36-5

It is a colorless to pale yellow liquid, d²⁰₄ 1.018–1.023, n²⁰_D 1.501–1.506, with a herbal, fresh odor, reminiscent of grapefruit. It is prepared by a Prins reaction of ??-methylstyrene with acetaldehyde and is used in perfume compositions for soap, detergents, and household products.

The traditional product consists of a mixture of isomers containing about 60% of the sensorially more highly valued isomer. A product with a higher content of this isomer can be obtained by distillation . Correspondingly, this “Coeur” quality has a more strongly pronounced grapefruit note andmay therefore be used to impart fresh radiant grapefruit notes to modern personal care perfuming.

Floropal (Symrise), Vertacetal® coeur (Symrise)