astacin
noun
as·ta·cin
| \ ˈastəsə̇n\
variants:
or less commonly astacene \ -ˌsēn \
plural -s
Definition of astacin
: a red carotenoid ketone pigment C40H48O4 found especially in crustaceans (as in boiled lobster shell) and obtained by oxidation of astaxanthin
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