can·tha·xan·thin 
(kăn′thə-zănthĭn)
(kăn′thə-zănthĭn)n.
A red carotenoid pigment, C40H52O2, produced by certain microorganisms and found in some mushrooms, crustaceans, and fish. It is used in animal feed to impart color and as a dietary supplement for its antioxidant properties.
[From New Latin Cantharellus, genus name of the chanterelle, from which the pigment was first extracted (from New Latin cantharellus, diminutive of Latin cantharus, cup; see CHANTERELLE) + XANTH(O)- + -IN.]