Rubixanthin
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Rubixanthin[1]
IUPAC name	(1R)-4-[(1E,3E,5E,7E,9E,11E,13E,15E,17E,19E)-3,7,12,16,20,24-Hexamethylpentacosa-1,3,5,7,9,11,13,15,17,19,23-undecaenyl]-3,5,5-trimethylcyclohex-3-en-1-ol
Other names	•(3R)-beta,psi-Caroten-3-ol •Natural yellow 27 •E161d
Identifiers
CAS number	[3763-55-1]
PubChem	5281252
SMILES	CC1=C(C(C[C@@H](C1)O)(C)C)\C=C\C(=C\C=C\C(=C\C=C\C=C(/C)\C=C\C=C(/C)\C=C\C=C(/C)\CCC=C(C)C)\C)\C
Properties
Molecular formula	C40H56O
Molar mass	552.85 g/mol
Appearance	Red-orange crystals
Melting point	160 °C
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references

Rubixanthin, or natural yellow 27, is a natural xanthophyll pigment with a red-orange color found in rose hips. As a food additive it used under the E number E161d as a food coloring.

References

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