Tuesday, April 24, 2012

Knowledge of Cholesteryl Benzoate

Cholesteryl benzoate
Cholesteryl benzoate was the first material in which liquid crystal properties were discovered. In the late 1880s Friedrich Reinitzer, an Austrian botanist, while studying the chemicals in plants, heated cholesteryl benzoate. At 145 °C the material melted, yielding a cloudy fluid, which changed to the originally expected clear liquid at 178.5 °C. In 1888, the German physicist Otto Lehmann concluded the cloudy fluid presents a new phase of matter, and coined the term liquid crystal.
Product name:Cholesteryl benzoate
CAS:604-32-0
Molecular Formula:C34H50O2
Formula Weight:490.76g/mol
A cholesteryl ester is, as its name would imply, an ester of cholesterol. The ester bond is formed between the carboxylate group of a fatty acid and the hydroxyl group of cholesterol. Cholesteryl esters have a lower solubility in water than cholesterol and, in other words, are more hydrophobic. They are associated with atherosclerosis.


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