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Cholesteryl benzoate
Cholesteryl benzoate is an ester of cholesterol and benzoic acid, the first known liquid crystal: Reinitzer's 1888 study of its two melting points began liquid crystal research.
Cholesteryl ester
A cholesteryl ester is a lipid formed when a fatty acid attaches to cholesterol, making up about two-thirds of plasma cholesterol and serving as its storage and transport form.