Eugenol is an allyl chain-substituted guaiacol, a member of the allylbenzene class of chemical compounds. It is a colorless to pale yellow, aromatic oily liquid extracted from certain essential oils especially from clove oil, nutmeg, cinnamon, basil and bay leaf. Eugenol liquid is a colorless to pale yellow liquid with a spicy, clove-like odor. It is commonly used as a flavoring agent in food and beverages, as well as a fragrance in perfumes and cosmetics. Eugenol liquid also has antiseptic and analgesic properties, making it a popular ingredient in dental products such as toothpaste and mouthwash. Additionally, it is used in the production of pharmaceuticals and as a pesticide.