Tags: Chemical Compound, Chemical Substance.
trans-3-Methyl-4-octanolide also called trans-β-methyl-γ-octalactone is a chemical compound of the lactone family with formula C9H16O2. It exists in two stereoisomers: (3R4S) and (3S4R).The (3S4R) form is found in whiskey and other alcoholic beverages that have been aged in oak barrels together with the more important cis isomer. It has a coconut celery or fresh wood aroma that can be detected by humans at the concentration of 20 μg/L in air.