The essential oil contains cineole, borneol, and thujone. There are two different enantiomers of borneol. It is the acetate ester of borneol. Bornyl acetate is the acetate ester of borneol. It has many chemical components, some of which are borneol, camphor, and pinene. One historical name for borneol is Borneo camphor which explains the name. Borneol is used in traditional Chinese medicine. Other compounds present are alpha-pinene, camphene, linalool, chrysanthenone , borneol, chrusanthenylactate, thymol, eugenol, and beta-eudesmol. The essential oil contains cineol, camphor, thujone, and borneol among other components. Borneol is easily oxidized to the ketone (camphor). Borneol is a bicyclic organic compound and a terpene derivative. Borneol is an eye, skin, and respiratory irritant; it is harmful if swallowed. Other compounds are&colon; benzoic acid, benzyl alcohol, borneol, "o"-cresol, 4-(4'-hydroxyphenyl)-2-butanone, hydroquinone, phenol. Borneol is a component of many essential oils and it is a natural insect repellent.