11. They also contain the essential oil eugenol . 12. It also contains eugenol which can deliver a hint of spicy flavor to the tequila. 13. The first commercial synthesis of vanillin began with the more readily available natural compound eugenol . 14. Other caustic medications include eugenol and chlorpromazine. 15. Historically, plaster of Paris, zinc oxide eugenol , and agar have been used. 16. Eugenol is a component of Balsam of Peru, to which some people are allergic.17. Zingerone is similar in chemical structure to other flavor chemicals such as vanillin and eugenol . 18. It can be synthesized from eugenol and has been used in the manufacture of vanillin. 19. The TRPV3 channel is directly activated by various natural compounds like carvacrol, thymol and eugenol . 20. One tube contains zinc oxide and vegetable or mineral oil; the other contains eugenol and rosin.