(2S,2'S,5'S)-Lilac aldehyde - fresh, flowery Odor Threshold = 0.2 ng = (2S)-2-[(2S,5S)-2,5-dimethyl-5-vinyltetrahydrofuran-2-yl]propanal Ref: Kreck, M. & A. Mosandl, Synthesis, Structure Elucidation, and Olfactometric Analysis of Lilac Aldehyde and Lilac Alcohol Stereoisomers, Journal of Agricultural and Food Chemistry, J. Agric. Food Chem. 2003, 51, 2722-2726

(2R,2'R,5'R)-Lilac aldehyde - flowery Odor Threshold = 22 ng = (2R)-2-[(2R,5R)-2,5-dimethyl-5-vinyltetrahydrofuran-2-yl]propanal Ref: Kreck, M. & A. Mosandl, Synthesis, Structure Elucidation, and Olfactometric Analysis of Lilac Aldehyde and Lilac Alcohol Stereoisomers, Journal of Agricultural and Food Chemistry, J. Agric. Food Chem. 2003, 51, 2722-2726

(2R,2'S,5'S)-Lilac aldehyde - pleasant, flowery, fresh Odor Threshold = 0.3 ng = (2R)-2-[(2S,5S)-2,5-dimethyl-5-vinyltetrahydrofuran-2-yl]propanal Ref: Kreck, M. & A. Mosandl, Synthesis, Structure Elucidation, and Olfactometric Analysis of Lilac Aldehyde and Lilac Alcohol Stereoisomers, Journal of Agricultural and Food Chemistry, J. Agric. Food Chem. 2003, 51, 2722-2726

(2S,2'R,5'S)-Lilac aldehyde - sweet, flowery

Odor Threshold = 0.3 ng

= (2S)-2-[(2R,5S)-2,5-dimethyl-5-vinyltetrahydrofuran-2-yl]propanal

Ref: Kreck, M. & A. Mosandl, Synthesis, Structure Elucidation, and Olfactometric Analysis of Lilac Aldehyde and Lilac Alcohol Stereoisomers, Journal of Agricultural and Food Chemistry, J. Agric. Food Chem. 2003, 51, 2722-2726

(2R,2'S,5'R)-Lilac aldehyde - flowery, fresh

Odor Threshold = 18 ng

= (2R)-2-[(2S,5R)-2,5-dimethyl-5-vinyltetrahydrofuran-2-yl]propanal

Ref: Kreck, M. & A. Mosandl, Synthesis, Structure Elucidation, and Olfactometric Analysis of Lilac Aldehyde and Lilac Alcohol Stereoisomers, Journal of Agricultural and Food Chemistry, J. Agric. Food Chem. 2003, 51, 2722-2726

(2R,2'R,5'S)-Lilac aldehyde - sweet, flowery

Odor Threshold = 0.4 ng

= (2R)-2-[(2R,5S)-2,5-dimethyl-5-vinyltetrahydrofuran-2-yl]propanal

Ref: Kreck, M. & A. Mosandl, Synthesis, Structure Elucidation, and Olfactometric Analysis of Lilac Aldehyde and Lilac Alcohol Stereoisomers, Journal of Agricultural and Food Chemistry, J. Agric. Food Chem. 2003, 51, 2722-2726

(2S,2'S,5'R)-Lilac aldehyde - flowery, fresh

Odor Threshold = 4 ng

= (2S)-2-[(2S,5R)-2,5-dimethyl-5-vinyltetrahydrofuran-2-yl]propanal

Ref: Kreck, M. & A. Mosandl, Synthesis, Structure Elucidation, and Olfactometric Analysis of Lilac Aldehyde and Lilac Alcohol Stereoisomers, Journal of Agricultural and Food Chemistry, J. Agric. Food Chem. 2003, 51, 2722-2726

Ionones, Irones, Damascones & Structurally Related Odorants

Acyclics (Alcohols, Esters, Acids, Aldehydes)

Lactones

Sesquiterpenoid Related Odorants