Cholesteryl oleyl carbonate (COC) is an organic chemical, a 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. It can be used with cholesteryl nonanoate and cholesteryl benzoate in some thermochromic liquid crystals.
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IUPAC name
Cholest-5-en-3β-yl (9Z)-octadec-9-en-1-yl carbonate
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Systematic IUPAC name
(1R,3aS,3bS,7S,9aR,9bS,11aR)-9a,11a-Dimethyl-1-[(2R)-6-methylheptan-2-yl]-2,3,3a,3b,4,6,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-cyclopenta[a]phenanthren-7-yl (9Z)-octadec-9-en-1-yl carbonate | |
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3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.037.421 |
PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
C46H80O3 | |
Molar mass | 681.13 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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It is used in some hair colors,[1] make-ups, and some other cosmetic preparations.
It can be also used as a component of the liquid crystals used for liquid crystal displays.