Γ-Lactone

γ-Lactones are a family of organic compounds with the formula cyclo-O=COCHRCH2CH2. The parent member is γ-butyrolactone (R = H). A commercially important set of γ-lactones are derived from the free radical addition of fatty alcohols and acrylic acid. They are all weakly volatile liquids, which are colorless when pure, but typical samples are not.

Some γ-lactone fragrances
NameFormulaRegistry numberNotes
γ-OctalactoneC8H14O2104-50-7fruity
γ-NonalactoneC9H16O2104-61-0coconut-like
γ-DecalactoneC10H18O2706-14-9peach flavors
γ-UndecalactoneC11H20O2104-67-6peach flavors
β-Methyl-γ-octalactoneC9H16O239212-23-2whisky lactone
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