Term Name:	echinenone
Synonyms:	4-keto-beta-carotene, 4-oxo-beta-carotene, aphanin, beta,beta-caroten-4-one, Echinenone, myoxanthin
Definition:	A carotenone that is β-carotene in which the 4 position has undergone formal oxidation to afford the corresponding ketone. Isolated as orange-red crystals, it is widely distributed in marine invertebrates.
Ontology:	ChEBI [CHEBI:4746]  ( EBI )