Echinenone is a carotenoid with a conjugated carbonyl group. Echinenone (4-keto-ß-carotene) is a monoketo compound, is an intermediate between ß-carotene and canthaxanthin in animals. It is one of the major carotenoids of Anabaena sp., and also present in Micrococcus roseus. It is located in the thylakoid membrane of Anabaena. The conversion of ß-carotene to echinenone is catalysed by CrtO, a ß-carotene ketolase.
Synonyms: beta,beta-Caroten-4-one
Molecular Formula: C40H54O
Molecular Weight: 550.86
Linear Structural Formula: C40H54O
MDL Number: MFCD06656303
Purity: >=95.0% (HPLC)
Storage: -20C
Application: Echinenone may be used as an external standard for the extraction of carotenoid from plasma samples. It may also been used as an internal standard, added to samples for extraction and quantification.
Biochem Physiol Actions: Echinenone binds to glocobacter rhodopsin and functions as a light harvesting antenna in Gloeobacter violaceous.