L9283 Sigma-Aldrich


≥98% (TLC), powder

Synonym: 3′,4′,5,7-Tetrahydroxyflavone

  • CAS Number 491-70-3

  • Empirical Formula (Hill Notation) C15H10O6

  • Molecular Weight 286.24

  •  Beilstein/REAXYS Number 292084

  •  EC Number 207-741-0

  •  MDL number MFCD00017309

  •  PubChem Substance ID 24896520

  •  NACRES NA.77



General description

Luteolin (3′,4′,5′,7′-tetrahydroxyflavone), a polyphenolic compound belongs to flavones subclass of flavonoids. Luteolin is commonly found in plants like celery, green peppers and chamomile tea. Luteolin is one of the major flavonoids present in the flower extract of Hieracium pannosum Boiss, aerial part of Dracocephalum kotschyi, and contributes to the antioxidant potential of the plant. Luteolin possesses antioxidant, anti-inflammatory properties, and exerts anti-tumor potential primarily through apoptosis. Luteolin exerts its apoptotic activity through downregulation of protein kinase B (Akt) pathway leading to caspase mediated apoptosis. Luteolin also resensitizes cancer cells to therapeutics. Luteolin regulates the inflammatory genes and reduces nitric oxide and inflammatory cytokine production. The anti-inflammatory property of luteolin implicates it as a potential therapeutic agent for the neurodegenerative disease like Alzheimer′s disease. In plants, luteolin induces nodulation protein F (nodF) gene.


Luteolin has been used:
• to induce and elucidate the apoptotic pathway in renal cell carcinoma 786-O cells
• as an additive in M9 minimal medium to induce nodF gene expression
• as a reference standard to qualitatively and quantitatively analyse luteolin using reverse phase-high performance liquid chromatography with diode array detector (RP-HPLC-DAD)
• as a reaction supplement for β-galactosidase assay
• to elucidate the anti-inflammatory efficacy of luteolin in pseudorabies virus infected RAW264.7 cell line by measuring the anti-inflammatory mediators production and also cell viability and cytotoxicity assay

Biochem/physiol Actions

Hydroxylated flavone derivative, a strong antioxidant and radical scavenger. Suggested to play a role in prevention of cancer, possibly via the inhibition of fatty acid synthase activity.

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles


Dietary Antioxidants

Antioxidants protect biological systems from oxidative damage produced by oxygen-containing free radicals and from redoxactive transition metal ions such as iron, copper, and cadmium.1 During the oxi...
Biofiles Volume 2 Article 2
Keywords: Adhesion, Anti-inflammatory agents, Applications, Cancer, Cardiovascular, Catalysis, Diabetes, Diseases, Gene expression, Metabolism, Neurodegenerative Diseases, Peroxidations, Phosphorylations, Prebiotics, Probiotics, Reductions, Transcription, Transduction, Vitamins

Discover Bioactive Small Molecules for Nitric Oxide & Cell Stress Research

Exposure to harsh conditions, cellular damage, and other factors can cause stress on cells. Stress attributed directly and indirectly to oxygen is referred to as oxidative stress, which is imposed on...
Keywords: Antimicrobials, Bioactive small molecules, Cancer, Diseases, Neurodegenerative Diseases, Oxidations

Fatty Acid Synthesis and Metabolism in Cancer Cells

Proliferatively active cells require fatty acids for functions such as membrane generation, protein modification, and bioenergetic requirements. These fatty acids are derived either from dietary sour...
BioFiles v7 n4
Keywords: Apoptosis, Cancer, Carboxylations, Catalysis, Citric Acid Cycle, Gene expression, Glycolysis, Metabolism, Oxidations, Phosphorylations

HPLC Analysis of Flavones on Discovery® HS PEG

From our library of Articles, Sigma-Aldrich presents HPLC Analysis of Flavones on Discovery® HS PEG
Keywords: Chromatography, High performance liquid chromatography

Traditional Medicinals and Cancer

Traditional Chinese Medicine (TCM) is a healing art that has been practiced for thousands of years. The practice of TCM is a holistic approach that includes the use of herbal preparations, acupunctur...
Lynn Stephenson, Product Specialist, and Chloe McClanahan, Product Manager
Biofiles Vol. 8, No. 6
Keywords: Analgesics, Antitumor agents, Apoptosis, Cancer, Drug discovery, Fractionation, High performance liquid chromatography, Metabolites, Metabolomics, Nuclear magnetic resonance spectroscopy, Pharmaceutical

Peer-Reviewed Papers


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