Free radical scavengers

Echinatin (Retrochalcone) disturb the mitochondrial energy transfer reactions and membrane permeability, at a low concentration cause deterioration of respiratory control and oxidative phosphorylation of isolated rat liver mitochondria, inhibits DNP-ATPase activity while stimulating range latent ATPase activity. Echinatin has significant antioxidant activities, it shows strong scavenging activity toward the ABTS + radical, it also dose-dependently inhibits LPS induced reactive oxygen species (ROS) production in RAW 264.7 cells and inhibits the production of nitric oxide (NO), interleukin-6 (IL-6) and prostaglandin E2 (PGE2) in LPS-induced macrophage cells.

AFMK (Formyl-N-acetyl-5-methoxykynurenamine) is an active metabolite of Melatonin with antioxidant and free radical scavenging activity. AFMK is a modulator of apoptosis and improves the anti-tumor effect of Gemcitabine in PANC-1 cells.

Edaravone (MCI-186)(MCI-186) is a potent new free radical scavenger used for the therapy of patients with acute brain infarction.

Rubiadin (1,3-Dihydroxy-2-Methylanthracene-9,10-Dione) possesses potent antioxidant property, it can prevent lipid peroxidation induced by FeSO4 and t-butylhydroperoxide (t-BHP) in a dose dependent manner.

Cycloolivil (Isoolivil) is a natural polyphenolic compound with a significant radical scavenging activity present in olive trees. Cycloolivil has antioxidant activity, it may prevent thrombotic complications associated to platelet hyperaggregability and be the base

Cyclo(L-Phe-L-Pro) shows broad-spectrum antibacterial and antifungal activities. Cyclo(L-Phe-L-Pro) exhibits activity against methicillin-resistant S. aureus and Enterococcus raffinosus.

Rebamipide (OPC12759) is a quinolinone derivative with anti-ulcer and anti-inflammatory activities. Rebamipide induces cyclooxygenase 2 (COX2) synthesis which results in an increase in endogenous prostaglandin synthesis in the gastric mucosa. This agent also inhibits H. pylori-induced production of tumor necrosis factor (TNF) alpha and subsequent inflammation of the gastric mucosa. In addition, rebamipide scavenges oxygen-derived free radicals that potentially cause mucosal injury, and stimulates prostaglandin EP4 receptor gene expression followed by mucous secretion, thereby enhancing the gastric mucosal defense.

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.

Retusin is derived from the leaves of Talinum triangulare. Retusin Retusin can be used in studies about acting as pre- and postemergent herbicides.

Peonidin-3-O-glucoside chloride (Peonidin 3-Glucoside Chloride) is an anthocyanin with radical scavenger activity and can be used in studies about acting as an insulin secretagogue.

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

Tempo (2,2,6,6-Tetramethylpiperidinooxy) has a wide range of applications including use as a free radical scavenger, a reagent in organic synthesis and as a structural probe in electron spin resonance spectroscopy.

Sodium 4-aminosalicylate dihydrate (4-Amino-salicylic acid sodium salt) is the sodium salt form of aminosalicylic acid, an analog of para-aminobenzoic acid (PABA) with antitubercular activity. Sodium 4-aminosalicylate dihydrate exerts its bacteriostatic activity against Mycobacterium tuberculosis by competing with PABA for enzymes involved in folate synthesis, thereby suppressing growth and reproduction of M. tuberculosis, eventually leading to cell death.