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C8221 Sigma-Aldrich

Caffeic acid phenethyl ester

≥97% (HPLC), powder

Synonym: CAPE



Related Categories Antioxidant and Free Radical Scavengers, Bioactive Small Molecule Alphabetical Index, Bioactive Small Molecules, Biochemicals and Reagents, C-CH,
assay   ≥97% (HPLC)
form   powder
storage condition   protect from light
color   off-white
solubility   ethyl acetate: 50 mg/mL
  DMSO: soluble
  ethanol: soluble
storage temp.   −20°C
Gene Information   human ... NFKB2(4791)


Biochem/physiol Actions

Caffeic acid phenethyl ester is a specific inhibitor of the nuclear transcription factor NF-κB.


Caffeic acid phenethyl ester (CAPE) is the active component of propolis, a honeybee hive product. Caffeic acid phenethyl ester is a specific inhibitor of the nuclear transcription factor, NF-κB. CAPE has been shown to significantly suppress the lipoxygenase pathway of arachidonic acid metabolism during inflammation. Caffeic acid phenethyl ester inhibits HIV-1 integrase, and also inhibits proliferation of transformed cells. It induces apoptosis in transformed fibroblasts, and interferes with EGF signal transduction affecting both protein kinase C and ornithine decarboxylase activity.

Features and Benefits

This compound is a featured product for Gene Regulation research. Click here to discover more featured Gene Regulation products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.

Legal Information

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Milli-Q® Water Purification Solutions
Protocols & Articles


Discover Bioactive Small Molecules for Gene Regulation

The loss of regulation of gene expression is a key component to many human disease states, including neurodegenerative disorders, autoimmune conditions and, most prominently, cancers. Regulation of g...
Keywords: Acetylations, Epigenetics, Gene expression, Genomics, Methylations, PAGE, Post translational modifications, Transcription

NF-κB and Inflammation

Chronic inflammation is an underlying factor in the development and progression of many of the chronic diseases of aging, such as arthritis, atherosclerosis, diabetes, and cancer. Oxidative cellular ...
BioFiles 2007, 2.4, 14.
Keywords: Acetylations, Adhesion, Angiogenesis, Apoptosis, Cancer, Carcinogens, Catalysis, Cell culture, Cell proliferation, Cell signaling, Cellular processes, Degradations, Diabetes, Diseases, Environmental, Gene expression, Glycosylations, High performance liquid chromatography, Inflammation, PAGE, Phosphorylations, Thin layer chromatography, Transcription, transformation

Peer-Reviewed Papers


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