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CAS 472-61-7

CAS 472-61-7 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 472-61-7
CAS 472-61-7PubChem CID 5281224

Astaxanthin

Astaxanthin is a carotenone that consists of beta,beta-carotene-4,4'-dione bearing two hydroxy substituents at positions 3 and 3' (the 3S,3'S diastereomer). A carotenoid pigment found mainly in animals (crustaceans, echinoderms) but also occurring in plants. It can occur free (as a red pigment), as an ester, or as a blue, brown or green chromoprotein. It has a role as an antioxidant, an anticoagulant, an animal metabolite, a plant metabolite and a food colouring. It is a carotenol and a carotenone. It derives from a hydride of a beta-carotene. — ChEBI

IUPAC name
(6S)-6-hydroxy-3-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-18-[(4S)-4-hydroxy-2,6,6-trimethyl-3-oxocyclohexen-1-yl]-3,7,12,16-tetramethyloctadeca-1,3,5,7,9,11,13,15,17-nonaenyl]-2,4,4-trimethylcyclohex-2-en-1-one
Molecular formula
C40H52O4
Molecular weight
596.8 g/mol
Exact mass
596.38656014 Da
XLogP3
10.3
Topological polar surface area
74.6 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
2

Also known as

Ovoesterall-trans-AstaxanthinBioAstinAstaREALAstaxanthine(3S,3'S)-AstaxanthinCarophyll Pink(3S,3'S)-3,3'-Dihydroxy-beta,beta-carotene-4,4'-dione
16 more reported names
8XPW32PR7INSC-635689CHEBI:409683,3'-Dihydroxy-beta-carotene-4,4'-dionebeta,beta-Carotene-4,4'-dione, 3,3'-dihydroxy-, (3S,3'S)-E9AI950EAHRefChem:115249207-451-4231-424-6NatupinkUNII-8XPW32PR7IAstaxanthin, (3S,3'S)-3S,3'S-AstaxanthinAstaxanthin (Standard)(3S,3'S)-all-trans-Astaxanthinbeta-Carotene-4,4'-dione
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

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CAS 472-61-7 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 472-61-7 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.