Astaxanthin dimethyldisuccinate

CAS 578006-46-9

Astaxanthin dimethyldisuccinate is a synthetic, more stable form of astaxanthin, used in feed to colour the flesh of farmed salmon and trout.

Where it is and isn’t permitted

Status of Astaxanthin dimethyldisuccinate by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationPermitted21 CFR 73.37retrieved 2026-09-07
Codex AlimentariusCodex Alimentarius Commission / JECFANot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.

What it is made from

Produced by chemical synthesis, with the succinate groups added to improve stability and handling.

  • Vegan
  • Vegetarian
CAS registry number
578006-46-9
InChIKey
RIIRCPGONIAIKZ-DNZDLDDESA-N
PubChem
CID 165362824

Every name it appears under

6 recorded names. A label may use any of them.

CAS registry number

  • 578006-46-9

As it appears in regulation

  • Astaxanthin dimethyldisuccinate

Other names

  • Astaxanthin dimethyldisuccinate
  • Astaxanthin dimethylsuccinate
  • RIIRCPGONIAIKZ-DNZDLDDESA-N

Systematic names

  • 4-O-[(1S)-4-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-18-[(4S)-4-(4-methoxy-4-oxobutanoyl)oxy-2,6,6-trimethyl-3-oxocyclohexen-1-yl]-3,7,12,16-tetramethyloctadeca-1,3,5,7,9,11,13,15,17-nonaenyl]-3,5,5-trimethyl-2-oxocyclohex-3-en-1-yl] 1-O-methyl butanedioate

Hazard reference values

No reference value for this substance in the sources we hold.

Evidence and how bodies read it

Studies, and the differing conclusions regulators drew from them, are curated by hand rather than machine-read, and none has been written for this substance yet.

Sources for this page

  • ecfr retrieved 2026-09-07

Full licence terms and publisher details on Sources. How this page is built and updated: Method.

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