astacin
noun
as·ta·cin
ˈastəsə̇n
variants or less commonly astacene
-ˌsēn
plural -s
: a red carotenoid ketone pigment C40H48O4 found especially in crustaceans (as in boiled lobster shell) and obtained by oxidation of astaxanthin
Word History
Etymology
International Scientific Vocabulary astac- (from New Latin Astacus) + -in or -ene