(+)-2-{[(1S)-1-methylhexyl]oxy}pyrazine - Green, metallic, fatty, burdock. Qualitatively, there appears to be no significant difference between the organoleptic properties of the enantiomers or racemate. Odor Threshold = 70 ppb = (+)-2-((S)-hex-2-yloxy)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)-1-methylhexyl]oxy}pyrazine - Green, metallic, fatty, burdock. Odor Threshold = 200 ppb = (-)-2-((R)-hex-2-yloxy)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