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The Limbanols (3'-Methyl-norlimbanols)
(+)-(1'R,3'S,6'S)- Limbanol^® = (+)-(1'R,3'S,6'S)-3'-methyl-norlimbanol - woody-amber odor of extraordinary intensity, together with a slight transpiration side note
= (+)-(1'R,3'S,6'S)-1-(2',2',3',6'-tetramethyl-1'-cyclohexyl)-3-hexanol
Note that the C-3 position is epimeric, so this actually is a mixture of (1'R,3S,3'S,6'S) & (1'R,3R,3'S,6'S) isomers
Ref: Schulte-Elte, et al., Optically active aliphatic alcohols and their use as perfuming ingredients, United States Patent 6,054,426, April 25, 2000
Limbanol is a trademark of Firmenich SA


(-)-(1'S,3'R,6'R)-Limbanol^® = (-)-(1'S,3'R,6'R)-3'-methyl-norlimbanol - a much weaker odor, albeit of similar character to the (+)-(1'R,3'S,6'S)-isomer
= (-)-(1'S,3'R,6'R)-1-(2',2',3',6'-tetramethyl-1'-cyclohexyl)-3-hexanol
Note that the C-3 position is epimeric, so this actually is a mixture of (1'S,3S,3'R,6'R) & (1'S,3R,3'S,6'R) isomers
Ref: Schulte-Elte, et al., Optically active aliphatic alcohols and their use as perfuming ingredients, United States Patent 6,054,426, April 25, 2000
Limbanol is a trademark of Firmenich SA