(S)-(-)-delta-undecalactone - Fruity, sweet, milky Odor Threshold = 30 ppb Also known as (5S)-(-)-5-hexylpentan-5-olide and as (6S)-(-)-6-hexyltetrahydro-2H-pyran-2-one Ref: Takeshi Yamamoto, Miharu Ogura, Akira Amano, Kenichiro Adachi, Toshimitsu Hagiwara and Tsuneyoshi Kanisawa, Synthesis and odor of optically active 2-n-hexyl- and 2-n-heptylcyclopentanone and the corresponding delta-lactones, Tetrahedron Letters 43, (2002) 9081–9084.

(R)-(+)-delta-undecalactone - Fruity, sweet, creamy Odor Threshold = 100 ppb Also known as (5R)-(+)-5-hexylpentan-5-olide and as (6R)-(+)-6-hexyltetrahydro-2H-pyran-2-one Ref: Takeshi Yamamoto, Miharu Ogura, Akira Amano, Kenichiro Adachi, Toshimitsu Hagiwara and Tsuneyoshi Kanisawa, Synthesis and odor of optically active 2-n-hexyl- and 2-n-heptylcyclopentanone and the corresponding delta-lactones, Tetrahedron Letters 43, (2002) 9081–9084.

 

Ionones, Irones, Damascones & Structurally Related Odorants

Acyclics (Alcohols, Esters, Acids, Aldehydes)

Lactones

Sesquiterpenoid Related Odorants