Cholesteryl oleyl carbonate
Cholesteryl oleyl carbonate is an organic chemical, an carbonate ester of cholesterol and oleyl alcohol with carbonic acid. It is a liquid crystal material forming cholesteric liquid crystals with helical structure. It is a transparent liquid, or a soft crystalline material with melting point around 20 °C. Its chemical formula is C46H80O3.  It can be used with cholesteryl nonanoate and cholesteryl benzoate in some thermochromic liquid crystals.
It is used in some hair colors , make-ups, and some other cosmetic preparations.
It can be also used as a component of the liquid crystals used for liquid crystal displays.