Apocarotenoids are organic compounds which occur widely in living organisms. They are derived from carotenoids by oxidative cleavage,^[1] catalyzed by carotenoid oxygenases. Examples include the vitamin A retinoids retinal, retinoic acid, and retinol; and the plant hormone abscisic acid.

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v • d • e Carotenoids Carotenes (C40) α-Carotene · β-Carotene · γ-Carotene · δ-Carotene · ε-Carotene · ζ-Carotene · Lycopene · Neurosporene · Phytoene · Phytofluene Xanthophylls (C40) Antheraxanthin · Astaxanthin · Canthaxanthin · Citranaxanthin · Cryptoxanthin · Diadinoxanthin · Diatoxanthin · Dinoxanthin · Flavoxanthin · Fucoxanthin · Lutein · Neoxanthin · Rhodoxanthin · Rubixanthin · Violaxanthin · Zeaxanthin Apocarotenoids (C<40) Abscisic acid · Apocarotenal · Bixin · Crocetin · Food orange 7 · Ionones · Peridinin Vitamin A retinoids (C20) Retinal · Retinoic acid · Retinol Retinoid drugs Acitretin · Alitretinoin · Bexarotene · Etretinate · Fenretinide · Isotretinoin · Tazarotene · Tretinoin