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CAS 491-70-3

CAS 491-70-3 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

Chemical identity and properties

PubChem 2D chemical structure for CAS 491-70-3
CAS 491-70-3PubChem CID 5280445

Luteolin

Luteolin is a tetrahydroxyflavone in which the four hydroxy groups are located at positions 3', 4', 5 and 7. It is thought to play an important role in the human body as an antioxidant, a free radical scavenger, an anti-inflammatory agent and an immune system modulator as well as being active against several cancers. It has a role as an antineoplastic agent, an angiogenesis inhibitor, a radical scavenger, an immunomodulator, a vascular endothelial growth factor receptor antagonist, an anti-inflammatory agent, an apoptosis inducer, an EC 2.3.1.85 (fatty acid synthase) inhibitor, a nephroprotective agent, a plant metabolite and a c-Jun N-terminal kinase inhibitor. It is a 3'-hydroxyflavonoid and a tetrahydroxyflavone. It is a conjugate acid of a luteolin-7-olate. — ChEBI

IUPAC name
2-(3,4-dihydroxyphenyl)-5,7-dihydroxychromen-4-one
Molecular formula
C15H10O6
Molecular weight
286.24 g/mol
Exact mass
286.04773803 Da
XLogP3
1.4
Topological polar surface area
107.0 Ų
Hydrogen-bond donors
4
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
0

Also known as

3',4',5,7-TetrahydroxyflavoneDigitoflavoneLuteolol2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-4H-chromen-4-oneFlacitranLuteolineSalifazideYama kariyasu
16 more reported names
Weld Lake5,7,3',4'-TetrahydroxyflavoneCyanidenon-14702-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-4-benzopyrone4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-KUX1ZNC9J2CHEBI:158643',4',5,7-Tetrahydroxy-FlavoneRefChem:6458207-741-0Cyanidenon 1470BismiteLuteolin (Standard)2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4H-1-benzopyran-4-oneCHEMBL1512-(3,4-dihydroxyphenyl)-5,7-dihydroxy-chromen-4-one
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.

Records for CAS 491-70-3

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How CAS 491-70-3 is used on this site

CAS 491-70-3 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 491-70-3 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.