Free Radical Scavengers
Free radical scavengers are bioactive substances that eliminate reactive free radicals. Free radicals with unpaired electrons easily damage lipids, proteins and DNA, causing oxidative stress and cell aging.
Free radical scavengers neutralize radicals by donating electrons or hydrogen atoms to form stable inert compounds. Their scavenging capacity is measured by in vitro assays including DPPH and ABTS tests.
Common natural scavengers are polyphenols, flavonoids, vitamin C and vitamin E. They are widely studied for food preservation, cosmetic anti-oxidation and treatments for oxidative damage-related diseases.
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Free Radical Scavengers Related Products (379)
Related Products (379)
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Cyanidin-3-O-galactoside chloride
0 ImagesSynonyms: Ideain chloride
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Chondroitin sulfate sodium (from bovine)
0 ImagesSynonyms: Chondroitin polysulfate sodium (from bovine)Chondroitin sulfate (Chondroitin polysulfate) sodium (from bovine)) is a sulfated linear polysaccharide extracted from bovine sources, belonging to glycosaminoglycans. Chondroitin sulfate sodium (from bovine) inhibits osteoclast-mediated bone resorption and exhibits antioxidant activity, which is negatively correlated with molecular weight. Chondroitin sulfate sodium (from bovine) can be used in studies related to osteoarthritis.
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Pinoresinol Diglucoside
0 ImagesPinoresinol Diglucoside is an orally active lignan with multifunctional bioactivity. Pinoresinol Diglucoside interacts with targets including ALB, HIF1A, GSK3B, BCL2, MARK3, IL6, NF-κB p65, Nrf2, HO-1, and TLR4, and modulates pathways including PI3K-Akt, estrogen, MAPK, Rap1, AKT/mTOR/NF-κB, and TGF-β1/Smads. Pinoresinol Diglucoside regulates osteogenesis, bone resorption, oxidative stress, inflammation, apoptosis, ferroptosis, ferritinophagy, cardiac fibrosis, and vasorelaxation. Pinoresinol Diglucoside can be used for the research of osteoporosis, ischemia/reperfusion-induced brain injury, Alzheimer’s disease, myocardial ischemia-reperfusion injury, chondrodysplasia, diabetic cardiomyopathy, cardiac hypertrophy, hypertension, cisplatin-induced hearing loss, atherosclerotic cardiovascular diseases, and disuse osteoporosis.
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Kukoamine A
0 ImagesKukoamine A, a spermine alkaloid, is an orally active and brain-penetrant component found in the root barks of Lycium chinense (L. chinense) Miller. Kukoamine A inhibits purified Crithidia fasciculata trypanothione reductase and soybean lipoxygenase, activates μ-opioid receptor. Kukoamine A can inhibt cancer cell proliferation, migration and invasion, cause G0/G1 phase cell cycle arrest and induce apoptosis. Kukoamine A exerts neuroprotective effect and can induce autophagy . Kukoamine A inhibits LPS (HY-D1056)-induced NO, ROS, PGE2, TNF-α, IL-1β, IL-6 production and COX-2 activity. Kukoamine A reverses palmitic acid-induced insulin resistance, lipid accumulation, and oxidative stress via downregulation of Srebp-1c. Kukoamine A can be used for the research of cancer, infection, inflammation, metabolic and neurological disease, such as glioblastoma and Parkinson's disease.
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Lonicerin
0 ImagesSynonyms: VeronicastrosideLonicerin (Veronicastroside) is a flavonoid with multiple biological activities. Lonicerin inhibits xanthine oxidase with an IC50 of 37.4 µg/mL. Lonicerin inhibits alginate secretion protein (AlgE). Lonicerin inhibits P. aeruginosa and C. albicans. Lonicerin has anti-inflammatory, anti-arthritic, antioxidant, antifungal, anti-bacterial, and neuroprotective properties.
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Callistephin chloride
0 ImagesSynonyms: Pelargonidin-3-O-glucoside chlorideCallistephin (Pelargonidin 3-O-glucoside) chloride is an anthocyanin. Callistephin chloride regulates the expression of inflammatory (reducing iNOS/TNF-α/COX-2) and apoptosis-related proteins by inhibiting p38 phosphorylation, and enhances the protective effect of Isoflurane (HY-A0134) on microglial cell damage. Callistephin chloride significantly reduces ROS levels, eliminates DPPH free radicals, protects retinal pigment epithelial cells, and inhibits lipid peroxidation. Callistephin chloride can alleviate glutamate excitotoxicity, reduce neuronal apoptosis, and protect cerebellar granule neurons. Callistephin chloride can inhibit the proliferation and metastasis of breast cancer cells by inducing apoptosis.
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Loganic acid
0 ImagesLoganic acid is an iridoid isolated from cornelian cherry fruits. Loganic acid inhibits NF-κB signaling pathway, activates Nrf2 signaling pathway, exhibits anti-inflammatory activity. Loganic acid can modulate diet-induced atherosclerosis and redox status. Loganic acid has strong free radical scavenging activity and remarkable cyto-protective effect against heavy metal mediated toxicity. Loganic acid is orally active.
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2,6-Dihydroxybenzoic acid
0 Images2,6-Dihydroxybenzoic acid is an aromatic compound containing phenolic hydroxyl groups and carboxyl groups, and it is a secondary metabolite of Salicylic acid (HY-B0167). 2,6-Dihydroxybenzoic acid is also present in olive oil wastewater.
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(R,R)-Secoisolariciresinol diglucoside
0 ImagesSynonyms: (R,R)-SDG; (R,R)-LGM2605(R,R)-Secoisolariciresinol diglucoside ((R,R)-SDG) is an isomer of Secoisolariciresinol diglucoside (HY-105008). (R,R)-Secoisolariciresinol diglucoside scavenges hydroxyl radicals, peroxyl radicals, and DPPH radicals. (R,R)-Secoisolariciresinol diglucoside reduces γ-ray-induced strand breaks in calf thymus DNA. (R,R)-Secoisolariciresinol diglucoside can be used in studies of oxidant-dependent inflammatory tissue injury.
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Atranorin
0 ImagesAtranorin is a secondary metabolite of lichens and AKT inhibitor. Atranorin possesses multiple activities such as antibacterial, anti-inflammatory, antioxidant, anti-glycation, analgesic, and anti-tumor effects. Atranorin has IC50 values for scavenging DPPH and ABTS free radicals of 117 μM and less than 10 μM, respectively. Additionally, Atranorin also exhibits effects in promoting wound healing. Atranorin can be used in the research of various diseases, including myelodysplastic syndromes, tumors, and inflammatory conditions.
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5,7-Dihydroxycoumarin
0 Images5,7-Dihydroxycoumarin is a coumarin isolated from the inflorescences of Macaranga triloba. 5,7-dihydroxycoumarin displays antibacterial characteristics with an MIC value in the range of 1000 mg/mL to >1000 mg/mL. Some 5,7-dihydroxycoumarin derivatives have antioxidant properties.
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Tribuloside
0 ImagesTribuloside is a flavonoid and PDE4 inhibitor (IC50: 6 μM). Tribuloside exhibits antibacterial and antioxidant activities, capable of scavenging DPPH free radicals. Tribuloside also promotes melanogenesis. Tribuloside can be used in the research of hypopigmentary diseases, sun protection, and inflammatory diseases such as acute lung injury.
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NecroX-7
0 ImagesNecroX-7 is a potent free radical scavenger and a HMGB1 (high-mobility group box 1) inhibitor. NecroX-7 can be used as an antidote to acetaminophen toxicity. NecroX-7 exerts a protective effect by preventing the release of HMGB1 in ischemia/reperfusion injury. NecroX-7 inhibits the HMGB1-induced release of TNF and IL-6, as well as the expression of TLR-4 and receptor for advanced glycation end products. NecroX-7 can be used graft-versus-host disease (GVHD) research.
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Nevadensin
0 ImagesSynonyms: LysionotinNevadensin (Lysionotin), a natural flavonoid, is a selective human carboxylesterase 1 (hCE1) inhibitor with an IC50 of 2.64 μM. Nevadensin is more selective for hCE1 than hCE2 (IC50 of 132.8 μM). Nevadensin can induce apoptosis and DNA damage in cancer cells. Nevadensin has a variety of pharmacological effects such as anti-inflammatory, anti-tumour, anti-hypertensive, anti-tubercular, antitussive, antioxidant and anti-microbial activities.
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Rhamnocitrin
0 ImagesRhamnocitrin is an anti-inflammatory and antioxidant agent that targets STIM-1, NFATc3 and MAPK pathways and can scavenge DPPH (IC50=28.38 mM). Rhamnocitrin selectively inhibits oxidative stress and inflammatory responses in vascular endothelial cells and neurons. Rhamnocitrin up-regulates miR-185 to inhibit STIM-1-mediated store-operated calcium entry (SOCE), thereby blocking NFATc3 nuclear translocation and downstream inflammatory factor expression, while inducing heme oxygenase HO-1 expression and regulating the ERK/p38 MAPK pathway, inhibiting antioxidant and pro-inflammatory cytokines (such as IL-6, IL-8) and adhesion molecules (such as ICAM-1, VCAM-1). Rhamnocitrin can be used in the study of endothelial-related inflammatory diseases (such as sepsis, acute lung injury, atherosclerosis) and neuroprotection (such as oxidative damage of PC12 cells).
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Clitorin
0 ImagesClitorin is an orally active flavonoid compound that can be isolated from Carica papaya. Clitorin is an inhibitor of EGFR (IC50: 89.58 nM) and aromatase (IC50: 77.41 nM). Clitorin has antioxidant and anti-tumor activities. In the DPPH and ABTS radical scavenging assays, Clitorin has IC50 values of 91.96 ppm and 250.45 ppm, respectively. In addition, Clitorin can regulate lipogenesis and fatty acid oxidation and can be used in the research of non-alcoholic fatty liver disease.
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N-tert-Butyl-α-phenylnitrone
0 ImagesN-tert-Butyl-α-phenylnitrone is a nitrone-based free radical scavenger that forms nitroxide spin adducts. N-tert-Butyl-α-phenylnitrone inhibits COX2 catalytic activity. N-tert-Butyl-α-phenylnitrone has potent ROS scavenging, anti-inflammatory, neuroprotective, anti-aging and anti-diabetic activities, and can penetrate the blood-brain barrier.
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Cornuside
0 ImagesCornuside is an iridoid glycoside with anti-allergic, anti-inflammatory, and neuroprotective activities. Cornuside exerts anti-allergic activity by downregulating the p38 MAPK, JNK, and NF-κB signaling pathways, and inhibits IgE-mediated histamine release from mast cells. Cornuside improves cognitive impairment in mice by inhibiting BACE1 activity (IC50 = 55.84 μg/mL) and enhancing ChAT activity. Cornuside inhibits LPS (HY-D1056)-induced inflammatory mediators, including iNOS, COX-2, PGE2, TNF-α, IL-6, and IL-1β, by suppressing NF-κB activation.
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Gallic acid hydrate
0 ImagesSynonyms: 3,4,5-Trihydroxybenzoic acid hydrateGallic acid (3,4,5-Trihydroxybenzoic acid) hydrate is a natural polyhydroxyphenolic compound and an free radical scavenger to inhibit cyclooxygenase-2 (COX-2). Gallic acid hydrate has various activities, such as antimicrobial, antioxidant, antimicrobial, anti-inflammatory, and anticance activities.
