free radical

Protocatechuic acid (3, 4-Dihydroxybenzoic acid) (3, 4-dihydroxybenzoic acid) is a natural phenolic compound found in many edible and medicinal plants. Recent studies indicate that it could be used as a protective agent against cardiovascular diseases and neoplasms. The mechanism of its action is mostly associated with antioxidant activity, including inhibition of generation as well as scavenging of free radicals and up-regulating enzymes which participate in their neutralization.

(-)-Epigallocatechin Gallate (EGCG) is a phenolic antioxidant polyphenol flavonoid found in plants such as green and black tea, which inhibits telomerase and DNA methyltransferase, blocks the activation of EGF receptors and HER-2 receptors, inhibits cellular oxidation, and prevents free radical damage to cells.

Gallic acid (Benzoic acid) is found in almost all plants. Plants known for their high gallic acid content include gallnuts,grapes,tea,hops and oak bark.

Azelaic acid (Anchoic acid) is a component of hair and skin conditioners and is produced by the ozonolysis of oleic acid. Azelaic acid has bacteriostatic activity against Propionibacterium acnes and Staphylococcus epidermidis by inhibiting protoprotein synthesis in microbial cells. Azelaic acid also has the ability to inhibit pigmentation due to its free radical scavenging action.

β-Carotene (Provitamin A) is a naturally-occurring retinol (vitamin A) precursor obtained from certain fruits and vegetables with potential antineoplastic and chemopreventive activities. As an anti-oxidant, beta carotene inhibits free-radical damage to DNA.

(+)-Catechin Hydrate is an antioxidant flavonoid of plant origin; a free radical scavenger, preventing free radical-mediated damage in a variety of biological systems.

Naringenin (NSC-11855) is a flavanone that is considered to have a bioactive effect on human health as antioxidant, free radical scavenger, antiinflammatory, carbohydrate metabolism promoter, immunity system modulater. This substance has also been shown to repair DNA.

Spermine tetrahydrochloride (Musculamine tetrahydrochloride) is a polyamine involved in cellular metabolism found in all eukaryotic cells. It is a major natural intracellular compound capable of protecting DNA from free radical attack.

Sinapinic Acid (Synapoic acid) protects the rat liver from CCl4-induced inflammation, most likely by acting as a free radical scavenger and modulator of NF-κB p65 activation and proinflammatory cytokine expression. Sinapic acid with antioxidant role protects cardiac cells and its functions from I R induced oxidative stress. Sinapic acid is a potentially useful agent for the protection against liver fibrosis and cirrhosis. Sinapic acid prevents the alterations in the levels of lipids and lipoproteins by virtue of its anti-lipidaemic effect in isoproterenol induced myocardial infarcted rats. Sinapic acid ameliorates hyperglycemia through PLC-PKC signals to enhance the glucose utilization in diabetic rats.

Gallic Acid Monohydrate (3,4,5-Trihydroxybenzoic acid Monohydrate) is a hydrate of Gallic Acid, a natural polyhydroxyphenol, which inhibits the free radical scavenging effect of COX-2, and possesses a variety of physiological activities such as antioxidant, anti-inflammatory, anti-tumor, and antibacterial.

1-IODOADAMANTANE (1-Adamantyl Iodide) is employed in the free-radical carbonylation reactions with alkenes.

Nordihydroguaiaretic acid (NDGA) is a natural product, extracted from Pole Fork Kelaroa, and is a lipoxygenase (5-LOX) inhibitor (IC50=8 μM). Nordihydroguaiaretic acid possesses antioxidant and free radical scavenging properties.

Loganin (Loganoside), an iridoid glucoside, has been reported to be an inhibitor of Cox-1 and also noted to suppress TNF-α formation. This compound also has displayed potent free-radical-scavenging activity and inhibitory effects on melanogenesis.

Cimifugin (Cimitin) inhibits NO production induced by lipopolysaccharide in macrophage cell line RAW 264.7 and for 1, 1-diphenyl-2-picrylhydrazyl free-radical scavenging activity in cell-free bioassay system.

Kuromanin chloride (Chrysontemin chloride) is potent antioxidants and free radical scavengers, may act as modulators of gene regulation and signal transduction pathways.

(-)-Gallocatechin ((−)-GC) has free radical scavenging ability and moderate affinity to the human cannabinoid receptor.

(+)-Gallocatechin (Gallocatechol) possesses free radical scavenging ability. (+)-Gallocatechin has moderate affinity to the human cannabinoid receptor.

Isomangiferin has an antiviral effect, may due to their capability of inhibiting virus replication within cells. It also has antioxidant and radical-scavenging activities.

Echinatin (Retrochalcone) is extracted from licorice and is a natural chalcone. Echinatin has a wide range of biological activities including hepatoprotective, anti-inflammatory, anti-bacterial infections, and attenuates lung damage.

Chrysoeriol has antioxidant, antiinflammatory, antitumor, antimicrobial, antiviral, and free radical scavenging activities, it also shows selective bronchodilator effect.

N-Vanillyldecanamide (Decylic acid vanillylamide), isolated from fruits of Capsicum annuum, significantly reduced free radical length in alfalfa seedlings in a dose-dependent manner.

γ-Glutamyl-S-1-propenyl cysteine is a compound obtained from garlic with strong free radical scavenging activity.

Maclurin (NSC-83240) is a phenolic component of mulberry twigs, exerts anti-metastatic effects. Maclurin effectively protects against OH-induced damages to DNA and MSCs and can be used in studies about the prevention of many diseases or MSCs transplantation.

Dimboa (2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one) is an antifungal compound used in crops.