Trivialnamen Lactone

Gamma Butyrolacton

(Oxolan-2-on)

Gamma Valeronlacton

(4,5-Dihydro-5-methyl-2(3H)-furan-2-on

Sigma - Valerolacton

(Tetrahedro-2H-pyran-2-on)

Cumarin

(2H-1-Benzopyran-2-on)

Phthalid

(3H-Isobenzofuran-1-on)