NCIt definition : An unsaturated pentahydrocarbon, Isoprene is found in certain plants or obtained by
distillation of caoutchouc or gutta-percha. In plants, it is elementary in the formation
of isoprenoids, fat-soluble vitamins, carotenoids and related pigments. Isoprenes
contribute to flavors and fragrances of essential oils and other plant-derived substances.
(NCI04);