Chirality & Odour Perception
John C. Leffingwell, Ph.D.

The 2-Ethyl-4,4-dimethyl-1-cyclohexanones

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Photo by permission of M. Roudintska - Art & Parfum

(+)-(2S)-2-Ethyl-4,4-dimethyl-1-cyclohexanone - also possesses a herbaceous odor note, which however is less thujonic and drier than that of its enantiomer. Additionally, an earthy, rooty cellar aspect is also present.

Ref: Fehr, et. al., United States Patent 6,025,323, February 15, 2000

(-)-(2R)-2-ethyl-4,4-dimethyl-1-cyclohexanone - develops the more strongly herbaceous and thujonic odor of the two enantiomers, with a pronounced fruity subnote having almost a spicy-berry-like character.

Ref: Fehr, et. al., United States Patent 6,025,323, February 15, 2000

Cyclic Terpenoid Odorants

Bicyclic Terpenoid Odorants

Acyclic Terpenoid Odorants

Ionones, Irones, Damascones & Structurally Related Odorants

Acyclics (Alcohols, Esters, Acids, Aldehydes)

Lactones

Sesquiterpenoid Related Odorants

Steroid Urine Type Odorants

Sandalwood Type Odorants

Musk Odorants

Miscellaneous

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