cis-β-Methyl-γ-octalactone

rel-4α*-Methyl-5α*-butyl-4,5-dihydrofuran-2(3H)-one

rel-(4R*,5R*)-4-Methyl-5-butyltetrahydrofuran-2-one

rel-(3R*,4R*)-3-Methyl-4-butyl-4-hydroxybutanoic acid lactone

(Z)-oak-lactone,5-butyldihydro-4-methyl-2(3H)-Furanone,(+)-cis-whiskeylactone