rhodoxanthin

Rhodoxanthin is a xanthophyll pigment with a purple color that is found in small quantities in a variety of plants including Taxus baccata and Lonicera morrowii. It is also found in the feathers of some birds. As a food additive it is used under the E number E161f as a food coloring. It is not approved for use in the EU or US; however, it is approved in Australia and New Zealand (where it is listed under its INS number 161f).

Chemical data

Formula: C40H50O2
Molecular weight: 562.8 g/mol
IUPAC name: (4E)-3,5,5-trimethyl-4-[(2E,4E,6E,8E,10E,12E,14E,16E,18E)-3,7,12,16-tetramethyl-18-(2,6,6-trimethyl-4-oxocyclohex-2-en-1-ylidene)octadeca-2,4,6,8,10,12,14,16-octaenylidene]cyclohex-2-en-1-one
SMILES: CC\1=CC(=O)CC(/C1=C\C=C(\C=C\C=C(\C=C\C=C\C(=C\C=C\C(=C\C=C\2/C(CC(=O)C=C2C)(C)C)\C)\C)/C)/C)(C)C
InChIKey: VWXMLZQUDPCJPL-ZDHAIZATSA-N
XLogP: 10.5
Polar surface area: 34.1 Å²
H-bond donors: 0
H-bond acceptors: 2
Formal charge: 0

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Wikidata facts

Subclass of: carotenoid
Mass: 562.381081
Has use: food coloring

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found in taxon: Dryopteris affinis
chemical formula: C₄₀H₅₀O₂
canonical SMILES: CC1=CC(=O)CC(C1=CC=C(C)C=CC=C(C)C=CC=CC(=CC=CC(=CC=C2C(=CC(=O)CC2(C)C)C)C)C)(C)C
isomeric SMILES: CC\1=CC(=O)CC(/C1=C\C=C(\C=C\C=C(\C=C\C=C\C(=C\C=C\C(=C\C=C\2/C(CC(=O)C=C2C)(C)C)\C)\C)/C)/C)(C)C

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Encyclopedic overview

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References

==References==

Excerpted from Wikipedia’s “rhodoxanthin” article, available under the CC BY-SA 4.0 licence.

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