Echinenone

Echinenone
Names

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-trimethylcyclohexen-1-yl)octadeca-1,3,5,7,9,11,13,15,17-nonaenyl]cyclohex-2-en-1-one
Other names β,β-Caroten-4-one; Myxoxanthine
Identifiers
CAS Number	432-68-8^Y
3D model (Jmol)	Interactive image
ChemSpider	4444648^N
ECHA InfoCard	100.006.441
PubChem	5281236
InChI InChI=1S/C40H54O/c1-30(18-13-20-32(3)23-25-36-34(5)22-15-28-39(36,7)8)16-11-12-17-31(2)19-14-21-33(4)24-26-37-35(6)38(41)27-29-40(37,9)10/h11-14,16-21,23-26H,15,22,27-29H2,1-10H3/b12-11+,18-13+,19-14+,25-23+,26-24+,30-16+,31-17+,32-20+,33-21+^N Key: SJWWTRQNNRNTPU-XJUZQKKNSA-N^N Key: QXNWZXMBUKUYMD-QQGJMDNJSA-N
SMILES CC1=C(C(CCC1)(C)C)/C=C/C(=C/C=C/C(=C/C=C/C=C(\C)/C=C/C=C(\C)/C=C/C2=C(C(=O)CCC2(C)C)C)/C)/C
Properties
Chemical formula	C₄₀H₅₄O
Molar mass	550.87 g·mol⁻¹
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N (what is ^YN ?)
Infobox references

Echinenone is a xanthophyll, with formula C₄₀H₅₄O. It is found in some cyanobacteria.^[1] It is synthesized from β-carotene by the enzyme beta-carotene ketolase (or CrtW). It has also been isolated from sea urchins.^[2]

References

↑ E. H. Schwartzel and J. J. Cooney (October 1970). "Isolation and identification of echinenone from Micrococcus roseus". Journal of bacteriology. 104 (1): 272–274. PMID 5473895.
↑ Lederer, E.; Moore, T. (1936). "Echinenone as a Provitamin A". Nature. 137 (3476): 996–996. doi:10.1038/137996b0. ISSN 0028-0836.

Carotenoids

Carotenes (C₄₀)	α-Carotene β-Carotene γ-Carotene δ-Carotene ε-Carotene ζ-Carotene Lycopene Neurosporene Phytoene Phytofluene Torulene Lycopersene

Xanthophylls (C₄₀)	Antheraxanthin Astaxanthin Canthaxanthin Citranaxanthin Cryptoxanthin Diadinoxanthin Diatoxanthin Dinoxanthin Echinenone Flavoxanthin Fucoxanthin Lutein Neoxanthin Rhodoxanthin Rubixanthin Violaxanthin Zeaxanthin

Apocarotenoids (C_<40)	Abscisic acid Apocarotenal Bixin Crocetin Food orange 7 Ionones Peridinin

Vitamin A retinoids (C₂₀)	Retinal Retinoic acid Retinol

Retinoid drugs	Acitretin Alitretinoin Bexarotene Etretinate Fenretinide Isotretinoin Tazarotene Temarotene Tretinoin Zuretinol acetate

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