(-)-(S)-4,8-dimethylnon-7-en-4-olide - fresh fruity lactone odour with peach and/or pear-like nuances It also has green and floral notes. Threshold: 0.65 ppb (in water) = (-)-(5S)-5-methyl-5-(4-methylpent-3-enyl)dihydrofuran-2(3H)-one Ref: Taro Kitaura, Hirokatsu Endo, Hideki Nakamoto, Masakazu Ishihara, Tetsuo Kawai, Junzo Nokami, Isolation and synthesis of a new natural lactone in apple juice (Malus × domestica var. Orin), Flavour and Fragrance Journal, Volume 19, Issue 3 , Pages 221 - 224 (2004)

(+)-(R)-4,8-dimethylnon-7-en-4-olide - an oily and heavy lactone odour which is expressed rather milky and coconut-like. Threshold: 0.16 ppb (in water) = (+)-(5R)-5-methyl-5-(4-methylpent-3-enyl)dihydrofuran-2(3H)-one Ref: Taro Kitaura, Hirokatsu Endo, Hideki Nakamoto, Masakazu Ishihara, Tetsuo Kawai, Junzo Nokami, Isolation and synthesis of a new natural lactone in apple juice (Malus × domestica var. Orin), Flavour and Fragrance Journal, Volume 19, Issue 3 , Pages 221 - 224 (2004)

Ionones, Irones, Damascones & Structurally Related Odorants

Acyclics (Alcohols, Esters, Acids, Aldehydes)

Lactones

Sesquiterpenoid Related Odorants