Citranaxanthin
IUPAC name	(3E,5E,7E,9E,11E,13E,15E,17E,19E)-5,9,14,18-Tetramethyl-20-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3,5,7,9,11,13,15,17,19-eicosanonaen-2-one
Other names	E161i
Identifiers
CAS number	3604-90-8
SMILES	C/C(/C=C/C1=C(C)CCC(C)(C)C1)=C\C=C\C(C)=C\C=C\C=C(C)\C=C\C=C(C)\C=C\C(C)=O
Properties
Molecular formula	C33H44O
Molar mass	456.70 g/mol
Appearance	Deep violet crystals
Solubility in water	Insoluble
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Citranaxanthin is a carotenoid pigment used as a food additive under the E number E161i as a food coloring. There are natural sources of citranaxanthin, but it is generally prepared synthetically.^[1] It is used as an animal feed additive to impart a yellow color to chicken fat and egg yolks.^[2]

[edit] References

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