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Carnosic acid is a natural benzenediol abietane diterpene found in rosemary (Rosmarinus officinalis) and common sage (Salvia officinalis).[1] Dried leaves of rosemary and sage contain 1.5 to 2.5% carnosic acid.
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| Names | |
|---|---|
| IUPAC name
11,12-Dihydroxyabieta-8,11,13-trien-20-oic acid | |
| Systematic IUPAC name
(4aR,10aS)-5,6-Dihydroxy-1,1-dimethyl-7-(propan-2-yl)-1,3,4,9,10,10a-hexahydrophenanthrene-4a(2H)-carboxylic acid | |
| Other names
Salvin | |
| Identifiers | |
3D model (JSmol) |
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| ChEBI | |
| ChEMBL | |
| ChemSpider |
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| ECHA InfoCard | 100.110.784 
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PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| C20H28O4 | |
| Molar mass | 332.440 g·mol−1 |
| Melting point | 185 to 190 °C (365 to 374 °F; 458 to 463 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Carnosic acid and carnosol, a derivative of the acid, are used as antioxidant preservatives in food and nonfood products, where they're labelled as "extracts of rosemary" (E392).[2]
