dpph

DPPH (2,2-Diphenyl-1-picrylhydrazyl) is a cell-permeable, stable free radical commonly used to evaluate the free radical scavenging ability, hydrogen donation capacity of compounds, and to measure the antioxidant activity of tissue extracts.

1. Oxyresveratro can inhibit tyrosinase activity. 2. Oxyresveratro is useful to trauma models, as toxicity to glia could be beneficial by inhibiting reactive gliosis. 3. Oxyresveratrol (trans-Oxyresveratrol) has antioxidant activity, can reduce neuronal oxidative damage and protect hepatocytes against oxidative stress and mitochondrial dysfunction, which may be associated with activation of Nrf2.

Vanillylmandelic acid, the end product of the metabolism of catecholamines, epinephrine, and norepinephrine, has antioxidant activity and is commonly used to help diagnose pheochromocytoma, as well as its elevation in association with depressive symptoms.

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.

5-Hydroxyoxindole has been identified as a urinary metabolite of indole, which is produced from tryptophane via the tryptophanase activity of gut bacteria [1]. 5-Hydroxyoxindole has lipid peroxidation inhibition activity and free radical DPPH scavenging

OsMundacetone (4-(3,4-Dihydroxyphenyl)-3-buten-2-one) is a natual product isolated from Rhizoma osmundae.

Isobutylshikonin exhibits obvious antioxidant activities , it exerts very good radical scavenging activities toward ABTS+ but shows moderate inhibition of DPPH·.

Heveaflavone inhibits Topoisomerase I and scavenges DPPH free radical with anti-proliferation and antioxidant effects.

Isookanin shows strong diphenyl(2,4,6-trinitrophenyl)iminoazanium (DPPH) radical-scavenging activity with the IC50 value of 7.9 ± 0.53 μM. Isookanin is a potent inhibitor of α-amylase (IC50=0.447 mg/ml).

Rhamnocitrin can enhance the immune function, improve the formation of spleen cells of mice serum hemolysin of chicken red blood cell immune.

Silybin B (Silibinin B) is an effective inhibitor of raloxifene 4 '- and 6-glucosalylation, an effective anti-fibrinogenic and anti-oligomeric component of Silymarin, with free radical scavenging activity of 1, 1-diphenyl-2-pyridinyl hydrazine (DPPH), and a protective effect against cisplatin-induced neurotoxicity by alleviating DNA damage and apoptosis. Silybin B can inhibit the growth of human chronic myeloid leukemia K562 cells and induce apoptosis.

4'-O-Methyllicoflavanone is isolated from the stem bark of Erythrina orientalis and shows antioxidant activity against DPPH radical with an IC50 value of 648.1 μM.

Atherosperminine shows cholinesterase inhibitory activity against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). Atherosperminine shows strong anti-plasmodial activity against Plasmodium falciparum, with the IC50 value of 5.80 uM, it also s

Epirosmanol is a diterpenoid containing a lactone moiety. Epirosmanol is a very weakly basic (essentially neutral) compound (based on its pKa).

Glucosamine (Chitosamine) is a natural product. Glucosamine is used as a dietary supplement. Glucosamine has pharmacological effects on cartilage and chondrocytes in osteoarthritis when used externally. Glucosamine regulates sugar metabolism. Glucosamine reduces the activity of glucoskinase in pancreatic islet homogenate.

α-Amylase-IN-1 is an α-Amylase inhibitor (IC50: 0.5509 μM). α-Amylase-IN-1 has antioxidant activity with an IC50 value of 53.49 μM for scavenging of DPPH free radicals, and can be used in the study of diabetes and oxidative stress-related diseases.

Camellianin B is a flavonoid compound and metabolite of Camellianin A. Camellianin B exhibits antioxidant properties and angiotensin converting enzyme (ACE) inhibitory activity and is utilized in biochemical research investigating enzymatic regulation of the renin–angiotensin system and oxidative stress-associated vascular biology pathways.

Rhodiosin is a compound with antioxidant activity.

COX-2-IN-22 is a COX-2 inhibitor (IC50: 8.6 μM) that can cross the blood-brain barrier and also exhibits inhibitory effects on AChE (IC50: 2.8 μM), BChE (IC50: 6.3 μM), β-Secretase (IC50: 15.3 μM), LOX-5 (IC50: 13.9 μM) and DPPH ( IC50: 6.8 μM) showed inhibitory effects.

N-Acetyl-L-aspartic acid is a derivative of aspartic acid, synthesized in neurons from the amino acid aspartic acid and acetyl coenzyme A. N-Acetyl-L-aspartic acid has antioxidant activity.

Effusol is a natural product, exhibits potent scavenging activity for DPPH and ABTS radicals(IC50 values of 79 μM and 2.73 μM, respectively). Effusol rescues CA1 LTP attenuated by corticosterone, defending the hippocampal function against stress-induced cognitive decline. Effusol can induce caspase-3-mediated cytotoxicity in HT22 cells.

(-)-Epigallocatechin-3-(3''-O-methyl) gallate ((-)-EGCG-3’'-O-ME) is a natural compound isolated from tea leaves. (-)-EGCG-3’'-O-ME exhibits potent antioxidant, anti-inflammatory, and antibacterial activities, and enhances the bond stability between etching-rinsing agents and dentin. (-)-Epigallocatechin-3-(3''-O-methyl) gallate ((-)-EGCG-3’'-O-ME) can be used in tumor and metabolic syndrome research.

Spathulenol is a natural ingredient from Aristolochia yunnanensis that has anti-inflammatory, antioxidant, anti-proliferation, anti-ulcer and anti-mycobacterium activities. Spathulenol showed significant antioxidant activity in DPPH system with IC50 of 85.60 μg/mL.

Lyoniresinol, a lignan isolated from Tarenna attenuata, exhibits free radical scavenging activity (IC50 of 82.4 μM) and DPPH antioxidant activity, demonstrating anti-melanogenic properties. It possesses a strong bitter taste, whereas its enantiomer (-)-Lyoniresinol is odorless.