Antheraxanthin

Antheraxanthin
Names
	IUPAC name (3S,5R,6S,3′R)-5,6-Epoxy-5,6-dihydro-β,β-carotene-3,3′-diol
	Systematic IUPAC name (1S,4S,6R)-4-Hydroxy-1-{(1E,3E,5E,7E,9E,11E,13E,15E,17E)-18-[(4R)-4-hydroxy-2,6,6-trimethylcyclohex-1-en-1-yl]-3,7,12,16-tetramethyloctadeca-1,3,5,7,9,11,13,15,17-nonaen-1-yl}-2,2,6-trimethyl-7-oxabicyclo[4.1.0]heptane
Identifiers
CAS Number	640-03-9 (all-trans) ; 68831-78-7 (9Z) ;
3D model (JSmol)	Interactive image;
Beilstein Reference	101042
ChEBI	CHEBI:27867 ;
ChemSpider	4444635;
KEGG	C08579;
PubChem CID	5281223;
UNII	0306J2L3DV ;
CompTox Dashboard (EPA)	DTXSID601015587 ;
	InChI InChI=1S/C40H56O3/c1-29(17-13-19-31(3)21-22-36-33(5)25-34(41)26-37(36,6)7)15-11-12-16-30(2)18-14-20-32(4)23-24-40-38(8,9)27-35(42)28-39(40,10)43-40/h11-24,34-35,41-42H,25-28H2,1-10H3/b12-11+,17-13+,18-14+,22-21+,24-23+,29-15+,30-16+,31-19+,32-20+/t34-,35+,39-,40+/m1/s1 Key: OFNSUWBAQRCHAV-OYQUVCAXSA-N; InChI=1/C40H56O3/c1-29(17-13-19-31(3)21-22-36-33(5)25-34(41)26-37(36,6)7)15-11-12-16-30(2)18-14-20-32(4)23-24-40-38(8,9)27-35(42)28-39(40,10)43-40/h11-24,34-35,41-42H,25-28H2,1-10H3/b12-11+,17-13+,18-14+,22-21+,24-23+,29-15+,30-16+,31-19+,32-20+/t34-,35+,39-,40+/m1/s1 Key: OFNSUWBAQRCHAV-OYQUVCAXBE;
	SMILES O[C@H]1CC(C(=C(/C)C1)/C=C/C(=C/C=C/C(=C/C=C/C=C(/C=C/C=C(/C=C/[C@@]32O[C@@]3(C[C@@H](O)CC2(C)C)C)C)C)C)C)(C)C;
Properties
Chemical formula	C40H56O3
Molar mass	584.885 g·mol−1
Appearance	Yellow solid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Antheraxanthin (from ánthos, Greek for "flower" and xanthos, Greek for "yellow") is a bright yellow accessory pigment found in many organisms that perform photosynthesis. It is a xanthophyll cycle pigment, an oil-soluble alcohol within the xanthophyll subgroup of carotenoids. Antheraxanthin is both a component in and product of the cellular photoprotection mechanisms in photosynthetic green algae, red algae, euglenoids, and plants.