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Names | |
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Preferred IUPAC name (3aR,4S,6E,10Z,11aR)-10-(Hydroxymethyl)-6-methyl-3-methylidene-2-oxo-2,3,3a,4,5,8,9,11a-octahydrocyclodeca[b]furan-4-yl (3R)-3,4-dihydroxy-2-methylidenebutanoate | |
Identifiers | |
3D model (JSmol) | |
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.042.004 |
PubChem CID | |
UNII | |
CompTox Dashboard (EPA) | |
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Properties | |
C20H26O7 | |
Molar mass | 378.421 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Cnicin is a sesquiterpene lactone, esterified with a substituted acrylic acid, and belonging to the germacranolide class of natural products. It is mainly found in Cnicus (Centaurea--formerly Cnicus--benedictus L. ( Asteraceae )), and is present in spotted knapweed plants, where highest and lowest concentrations are found in the leaves (0.86-3.86% cnicin) and stems respectively. [1] [2] Cnicin is used as a bitter tonic and the bitterness value is approximately 1,500.