Canthaxanthin /ËkÃ¦nÎ¸ÉËzÃ¦nÎ¸Éªn/ ( listen) is a keto-carotenoid[3] pigment widely distributed in nature. Carotenoids belong to a larger class of phytochemicals known as terpenoids. The chemical formula of canthaxanthin is C40H52O2.[4] It was first isolated in edible mushrooms.
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