Norisoprenoids

**Definition:** Thirteen-carbon butene cyclohexene degradation products formed by the cleavage of CAROTENOIDS. They contribute to the flavor of some FRUIT. Ionone should not be confused with the similarly named ionol.

**Tree numbers:** - D02.455.326.271.665.202.309 - D02.455.426.392.368.367.379.249.375 - D02.455.849.131.309

**Synonyms:** - Norisoprenoid - Nor-Isoprenoids - Nor-Isoprenoid