(+)-2-(1S,2R,5S)-menthyloxypyrazine - Fruity, sweet. Qualitatively, there appears to be no significant difference between the organoleptic properties of the enantiomers or racemate. Odor Threshold = 10 ppb = (+)-2-{[(1S,2R,5S)-2-isopropyl-5-methylcyclohexyl]oxy}pyrazine Ref: H. Masuda & S. Mihara, Preparation and Odor Evaluation of Both Enantiomers of Alkoxypyrazines, Agric. Biol. Chem. Vol. 53, 3367-3368, 1989.

(-)-2-(1R,2S,5R)-menthyloxypyrazine - Fruity, sweet. Odor Threshold = 2 ppb = (-)-2-{[(1R,2S,5R)-2-isopropyl-5-methylcyclohexyl]oxy}pyrazine Ref: H. Masuda & S. Mihara, Preparation and Odor Evaluation of Both Enantiomers of Alkoxypyrazines, Agric. Biol. Chem. Vol. 53, 3367-3368, 1989.

Ionones, Irones, Damascones & Structurally Related Odorants

Acyclics (Alcohols, Esters, Acids, Aldehydes)

Lactones

Sesquiterpenoid Related Odorants