Chemical compound Prephytoene diphosphate is a carotenoid precursor. References Cholesterol and steroid metabolic intermediatesMevalonate pathwayto HMG-CoA Acetyl-CoA Acetoacetyl-CoA HMB HMB-CoA HMG-CoA Ketone bodies Acetone Acetoacetic acid β-Hydroxybutyric acid to DMAPP Mevalonic acid Phosphomevalonic acid 5-Diphosphomevalonic acid Isopentenyl pyrophosphate Dimethylallyl pyrophosphate Geranyl- Geranyl pyrophosphate Geranylgeranyl pyrophosphate Carotenoid Prephytoene diphosphate Phytoene Non-mevalonate pathway DOXP MEP CDP-ME CDP-MEP MEcPP HMB-PP IPP DMAPP To Cholesterol Farnesyl pyrophosphate Squalene 2,3-Oxidosqualene Lanosterol Lanosterol 14-demethyllanosterol 4alpha-Methylzymosterol Zymosterone Zymosterol Zymosterol Zymostenol Lathosterol 7-Dehydrocholesterol Cholesterol Zymosterol Cholesta-7,24-dien-3-ol 7-Dehydrodesmosterol Desmosterol Cholesterol From Cholesterol to Steroid hormones 22R-Hydroxycholesterol 20α,22R-Dihydroxycholesterol See here instead. NonhumanTo Sitosterol Cycloartenol Cycloeucalenol Obtusifoliol 4α-methylfecosterol Isofucosterol 24-Methylenelophenol Sitosterol More Phytosterols see here instead. To Ergocalciferol Fecosterol Episterol Ergostatrienol Ergostatetraenol Ergosterol Ergocalciferol