Carvacrol
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| Carvacrol | |
|---|---|
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| Chemical name | 2-methyl-5-(1-methylethyl)phenol |
| Chemical formula | C10H14O |
| Molecular mass | 150.22 g/mol |
| CAS number | [499-75-2] |
| Density | ? g/cm3 |
| Melting point | 0 °C |
| Boiling point | 236-237 °C |
| SMILES | CC1=C(C=C(C=C1)C(C)C)O |
| Disclaimer and references | |
Carvacrol, or cymophenol, C6H3CH3(OH)(C3H7), is a constituent of the ethereal oil of Origanum hirtum, oil of thyme, oil obtained from pepperwort, and wild bergamot. It may be synthetically prepared by the fusion of cymol sulphonic acid with caustic potash; by the action of nitrous acid on 1-methyl-2-amino-4-propyl benzene; by prolonged heating of five parts of camphor with one part of iodine; or by heating carvol with glacial phosphoric acid or by preforming a dehydrogenation of carvone with a Pd/C catalyst. It is extracted from Origanum oil by means of a 50% potash solution. It is a thick oil which sets at 20 °C to a mass of crystals of melting point 0°C, and boiling point 236-237 °C. Oxidation with ferric chloride converts it into dicarvacrol, whilst phosphorus pentachloride transforms it into chlorcymol.
[edit] References
- This article incorporates text from the Encyclopædia Britannica Eleventh Edition, a publication now in the public domain.
