Echinenone
| Names | |
|---|---|
| IUPAC name
 β,β-Caroten-4-one  | |
| Systematic IUPAC name
 2,4,4-Trimethyl-3-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-3,7,12,16-tetramethyl-18-(2,6,6-trimethylcyclohex-1-en-1-yl)octadeca-1,3,5,7,9,11,13,15,17-nonaen-1-yl]cyclohex-2-en-1-one  | |
| Other names
 Myxoxanthine  | |
| Identifiers | |
3D model (JSmol)  | 
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| ChemSpider | |
| ECHA InfoCard | 100.006.441 | 
PubChem CID  | 
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| UNII | |
CompTox Dashboard (EPA)  | 
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| Properties | |
| C40H54O | |
| Molar mass | 550.871 g·mol−1 | 
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 
 (what is  ?)
 Infobox references  | |
Echinenone is a xanthophyll, with formula C40H54O. It is found in some cyanobacteria. It is synthesized from β-carotene by the enzyme beta-carotene ketolase (or CrtW). It has also been isolated from sea urchins.