Cholesteryl nonanoate

Cholesteryl nonanoate, also called cholesteryl pelargonate, 3&beta;-cholest-5-en-3-ol nonaoate or cholest-5-ene-3-&beta;-yl nonanoate, is an ester of cholesterol and nonanoic acid. It is a liquid crystal material forming cholesteric liquid crystals with helical structure. It forms beautiful spherulite crystals.

Uses
It is used in some hair colors, make-ups, and some other cosmetic preparations. It is also used in some pleochroic dyes and together with eg. cholesteryl oleyl carbonate and cholesteryl benzoate in some thermochromic applications.

It can be also used as a component of the liquid crystals used for liquid crystal displays.