Main Reaction: Isopentenyl diphosphate >> Carotenoid

Reference: PubMed ID: 15618629
Authors: Inomata M, Hirai N, Yoshida R, Ohigashi H
Title: Biosynthesis of abscisic acid by the direct pathway via ionylideneethane in a fungus, Cercospora cruenta.
Published: 2004 Dec

Isopentenyl diphosphate --> Carotenoid