Ethyl (R)-(-)-3-hydroxyhexanoate - sweet, woody, fruity. Odor threshold: 2.1 ng/L in air; 270 ppb in water (orthonasal); 63 ppb in water (retronasal) The racemate has been described as citrus, pineapple, grape, fruity; also as fruity, fresh green, citrus, pineapple, grape Ref: Andrea Buettner and Peter Schieberle, Evaluation of Key Aroma Compounds in Hand-Squeezed Grapefruit Juice (Citrus paradisi Macfayden) by Quantitation and Flavor Reconstitution Experiments, J. Agric. Food Chem. 2001, 49, 1358-1363; see for example ethyl 3-hydroxyhexanoate (Good Scents Co.)

Ethyl (S)-(+)-3-hydroxyhexanoate - weak fruity and aldehyde-like. Odor threshold: 264.5 ng/L in air Ref: Andrea Buettner and Peter Schieberle, Evaluation of Key Aroma Compounds in Hand-Squeezed Grapefruit Juice (Citrus paradisi Macfayden) by Quantitation and Flavor Reconstitution Experiments, J. Agric. Food Chem. 2001, 49, 1358-1363

Ionones, Irones, Damascones & Structurally Related Odorants

Acyclics (Alcohols, Esters, Acids, Aldehydes)

Lactones

Sesquiterpenoid Related Odorants