158 Results for "

DPPH free radical

" in MedChemExpress (MCE) Product Catalog:
Products (158)

158 Results for "DPPH free radical" in MCE Product Catalog:

51
51 Publications Verification
Cat. No.: HY-112053
CAS No.: 1898-66-4
Purity:  98.77%
Synonyms: 2,2-Diphenyl-1-picrylhydrazyl
DPPH (2,2-Diphenyl-1-picrylhydrazyl) is a stable free radical that can be used to measure the radical scavenging activity of antioxidants. The odd electron of nitrogen atom in DPPH is reduced by receiving a hydrogen atom from antioxidants to the corresponding hydrazine. DPPH method may be utilized in aqueous and nonpolar organic solvents and can be used to examine both hydrophilic and lipophilic antioxidants .
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12
12 Cited Publications
Cat. No.: HY-N0828
CAS No.: 537-42-8
Pterostilbene is a stilbenoid isolated from blueberries and Pterocarpus marsupium . Shows anti-oxidant, anti-inflammatory, anti-carcinogenic, anti-diabetic and anti-obesity properties . Pterostilbene blocks ROS production , also exhibits inhibitory activity against various free radicals such as DPPH, ABTS, hydroxyl, superoxide and hydrogen peroxide .
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7
7 Cited Publications
Cat. No.: HY-B0377
CAS No.: 76824-35-6
Synonyms: MK-208
Famotidine (MK-208) is an orally active and highly selective histamine H2 receptor antagonist. It inhibits gastric acid secretion by blocking the Gs signaling pathway, and regulates intracellular cAMP and ERK pathways. Famotidine inhibits TLR3-mediated inflammatory pathways, and reduces the expression of various inflammatory mediators and interferon-related genes. Famotidine scavenges DPPH and nitric oxide free radicals, alleviates oxidative stress damage in gastric tissue, inhibits proMMP-9, improves vascular endothelial permeability, and restores the normal physiological functions of neutrophils and eosinophils. Famotidine crosses intestinal epithelial cells via facilitated diffusion and passive diffusion, blocks paracellular cation transport, and increases intestinal transepithelial electrical resistance. Famotidine reduces serum levels of transaminases and alkaline phosphatase, exerts analgesic effects and gastric protective effects simultaneously. Famotidine can be used in studies related to COVID-19, liver injury and acute gastric ulcer .
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3
3 Cited Publications
Cat. No.: HY-N1430
CAS No.: 29700-22-9
Synonyms: trans-Oxyresveratrol
Oxyresveratrol (trans-Oxyresveratrol) is a potent naturally occurring antioxidant and free radical scavenger (IC50 of 28.9 μM against DPPH free radicals). Oxyresveratrol is potent and noncompetitive tyrosinase inhibitor with an IC50 value of 1.2 μM for mushroom tyrosinase. Oxyresveratrol is effective against HSV-1, HSV-2 and varicella-zoster virus, and has neuroprotective effects .
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2
2 Cited Publications
Cat. No.: HY-N1417
CAS No.: 533-31-3
Sesamol is a constituent of sesame oil. Sesamol shows a free radical scavenging activity. Sesamol shows an IC50=5.95±0.56 μg/mL in the DPPH assay. Anti-oxidant activities . Anticancer activities .
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2
2 Cited Publications
Cat. No.: HY-N2443
CAS No.: 22153-44-2
Tribuloside 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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2
2 Cited Publications
Cat. No.: HY-W040045
CAS No.: 18466-51-8
Synonyms: Pelargonidin-3-O-glucoside chloride
Callistephin (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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1
1 Cited Publications
Cat. No.: HY-P1934A
CAS No.: 3705-26-8
Cyclo(L-Phe-L-Pro), isolated from Pseudomonas fluorescens and Pseudomonas alcaligenes cell-free culture supernatants is an antifungal cyclic dipeptide . Cyclo(L-Phe-L-Pro) inhibits IFN-β production by interfering with retinoic-acid-inducible gene-I (RIG-I) activation . Cyclo(L-Phe-L-Pro) exhibits free-radical scavenging activity with the IC50 of 24 µM in the DPPH assay .
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1
1 Cited Publications
Cat. No.: HY-N6829
CAS No.: 1245-15-4
Synonyms: Quercetin-​3,​3',​4',​7-​tetramethylether
Retusin (Quercetin-3,3',4',7-tetramethylether) is a tyrosinase inhibitor, with IC50 values of 50.9 μM and 51.8 μM against mushroom and intracellular tyrosinase, respectively. Retusin also acts as a free radical scavenger, melanogenesis inhibitor, anti-apoptosis agent, neuroprotective agent, antiemetic, antifungal agent, and antiviral agent. Retusin scavenges ABTS• + and DPPHfree radicals. Retusin can be used in studies related to hyperpigmentation, vomiting, Aspergillus niger infection, and COVID-19 infection .
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1
1 Cited Publications
Cat. No.: HY-N11077
CAS No.: 89886-30-6
Synonyms: 4,5-di-O-CQA
4,5-Di-O-caffeoylquinic acid (4,5-di-O-CQA) is a natural product with multiple activities including anti-inflammatory, antioxidant, and antibacterial properties. 4,5-Di-O-caffeoylquinic acid induces intracellular Ca 2+ influx, and inhibits hypoxia-induced COX-2 expression and cell migration via the TRPV1-mediated pathway. 4,5-Di-O-caffeoylquinic acid scavenges DPPH free radicals, inhibits Cu 2+-mediated LDL oxidation, and reduces the production of TBARS. 4,5-Di-O-caffeoylquinic acid promotes intracellular ATP production, inhibits Aβ42 aggregation and β-sheet conversion, and protects neuroblastoma cells. 4,5-Di-O-caffeoylquinic acid inhibits the growth of Bacillus shigae. 4,5-Di-O-caffeoylquinic acid can be used in studies related to atherosclerosis, Alzheimer's disease, and bacterial infections .
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1
1 Cited Publications
Cat. No.: HY-N0241
CAS No.: 85571-15-9
Rhodionin is an orally active, multifunctional antivirulence and cytoprotective agent that targets and inhibits Lipase, sortase A (SrtA), CYP2D6 (IC50=0.761 μM), AChE (IC50=2.43-57.5 μM), and DPPH free radicals (IC50=19.49 μM). Rhodionin is isolable from the roots of Rhodiola crenulata. Rhodionin reduces postprandial serum triglyceride levels in mice by inhibiting lipase activity. Rhodionin also binds directly to SrtA to inhibit its transpeptidase activity, thereby reducing the fibrinogen adhesion and surface protein A levels of MRSA, effectively inhibiting biofilm formation and protecting against MRSA-induced cell damage. Rhodionin improves the survival rate of infected mice without affecting MRSA growth, and finds wide application in studies related to hyperlipidemia, exogenous obesity, and pneumonia induced by methicillin-resistant Staphylococcus aureus (MRSA) .
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Cat. No.: HY-N1312
CAS No.: 4206-58-0
Sinapaldehyde is a methoxyphenol and a selective COX-2 inhibitor (IC50: 47.8 µM) that can be extracted from various plants. Sinapaldehyde has antibacterial, anti-inflammatory, and antioxidant activities. Sinapaldehyde can scavenge DPPH free radicals (IC50: 172 μM). Sinapaldehyde is active against both Gram-negative and Gram-positive bacteria .
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Cat. No.: HY-N0627
CAS No.: 16290-07-6
Kaempferol-7-O-β-D-glucopyranoside is a flavonoid glycoside. Kaempferol-7-O-β-D-glucopyranoside exists in the root bark of Cudrania tricuspidata. Kaempferol-7-O-β-D-glucopyranoside inhibits Cu 2+-induced lipid peroxidation of low-density lipoprotein. Kaempferol-7-O-β-D-glucopyranoside possesses antioxidant activity and scavenges DPPH free radicals .
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Cat. No.: HY-W019885A
CAS No.: 7758-29-4
Synonyms: Sodium triphosphate pentabasic, 98%
Sodium tripolyphosphate (STPP), 98% is an inorganic, non-toxic polyphosphate crosslinker, inducer and enhancer. Sodium tripolyphosphate (STPP), 98% induces the formation of unique needle-like microcrystals in sodium alginate-chitosan composite films. Sodium tripolyphosphate (STPP), 98% enhances the DPPH free radical scavenging activity of sodium alginate-chitosan composite films .
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Cat. No.: HY-127170
CAS No.: 939-19-5
Purity:  99.30%
3-Hydroxycoumarin is an inhibitor of tyrosinase and lipoxygenase with an IC50 for recombinant human tyrosinase (rHT) of 26 μM, and a Ki of 3.39 μM; its IC50 for LOX is 9.5 μM. 3-Hydroxycoumarin has DPPH free radical scavenging activity (IC50 = 31.2 μM). 3-Hydroxycoumarin has photoprotective effects on sea urchin zygotes and embryos .
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Cat. No.: HY-N7627
CAS No.: 117591-85-2
Regaloside C is an anti-inflammatory agent and antioxidant that scavenges ABTS and DPPH free radicals. Regaloside C targets multiple molecules including TNF-α, MMP-2, ERα, AKT1, TLR4 and HSP90-α. Regaloside C is applicable to research related to inflammatory diseases .
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Cat. No.: HY-W101673
CAS No.: 2416-95-7
Dipropofol is a dimeric derivative of Propofol (HY-B0649) with antioxidant and antibacterial activities. Dipropofol terminates free radical chain reactions, scavenges DPPH free radicals and inhibits lipid peroxidation. Dipropofol protects cells from death induced by glutamate, Aβ(25-35) and buthionine sulfoximine, and increases the survival rate of mice exposed to oxygen. Dipropofol selectively activates tonic GABAA currents, hyperpolarizes resting membrane potential, reduces action potential firing, and alleviates the severity of seizures induced by Kainic acid. Dipropofol can be used in the research of Gram-positive bacterial infections, Alzheimer's disease, cerebral ischemia-related neuronal injury, oxygen toxicity and temporal lobe epilepsy .
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Cat. No.: HY-112053R
CAS No.: 1898-66-4
Synonyms: 2,2-Diphenyl-1-picrylhydrazyl (Standard)
DPPH (Standard) is the analytical standard of DPPH. This product is intended for research and analytical applications. DPPH (2,2-Diphenyl-1-picrylhydrazyl) is a stable free radical that can be used to measure the radical scavenging activity of antioxidants. The odd electron of nitrogen atom in DPPH is reduced by receiving a hydrogen atom from antioxidants to the corresponding hydrazine. DPPH method may be utilized in aqueous and nonpolar organic solvents and can be used to examine both hydrophilic and lipophilic antioxidants .
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Cat. No.: HY-Y0075
CAS No.: 66-99-9
2-Naphthaldehyde belongs to naphthalene-based bis-aromatic aldehyde compounds. 2-Naphthaldehyde scavenges DPPH and ABTS + free radicals, and exerts reductive effects by donating hydrogen atoms to interrupt free radical chain reactions. 2-Naphthaldehyde inhibits the growth and proliferation of colon cancer cells. 2-Naphthaldehyde serves as a substrate for NAD +-dependent salicylaldehyde dehydrogenase from Pseudomonas strain C6 and is catalytically oxidized. 2-Naphthaldehyde acts as a precursor material for the chemical synthesis of antioxidant Schiff bases .
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Cat. No.: HY-W101585
CAS No.: 94-46-2
Synonyms: Isopentyl benzoate
Research Areas:  

Inflammation/Immunology

Isoamyl benzoate (Isopentyl benzoate) is a natural aromatic ester compound. Isoamyl benzoate exhibits free radical scavenging capabilities against DPPH and ABTS, with its IC50 values being 9.55 μg/mL and 7455.54 μM TE/g respectively. Isoamyl benzoate can be used in antioxidant research .
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