Citral is an aroma chemical widely used in the flavor and fragrance industry. The chemical name of citral is 3,7-dimethyl-2,6-octadienal. It is a characteristic constituent of oils in lemon and Litsea cubeba. This chemical offers a citrus, fruity, green note. Citral is an important starting material for the chemical synthesis of linear monoterpenes, sesquiterpenes, and diterpenes. It is a valuable intermediate for the synthesis of odorants, terpinoids, and vitamins.