2. Signaling Pathways
  3. Metabolic Enzyme/Protease
  4. Xanthine Oxidase

Xanthine Oxidase

XO

Xanthine Oxidase

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Xanthine oxidase (XO), a versatile molybdoflavoprotein, catalyzes the oxidative hydroxylation of purine substrates (hypoxanthine and xanthine) to produce uric acid and subsequent reduction of oxygen at the flavin center with the generation of reactive oxygen species, either superoxide anion radical or hydrogen peroxide.

Xanthine oxidase is an important enzyme of purine catabolism pathway and has been associated directly in pathogenesis of gout and indirectly in many pathological conditions like cancer, diabetes and metabolic syndrome. The selective inhibition of xanthine oxidase may result in a broad spectrum therapeutic use for gout, cancer, inflammation and oxidative damage.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-151173
    XO/COX/LOX-IN-1
    		Inhibitor
    XO/COX/LOX-IN-1 is a XO/COX/LOX inhibitor with an IC50 of 3.2 μM against rat XO, 10.83 μM against 5-LOX, 12.67 μM against COX-1, and 8.31 μM against COX-2. XO/COX/LOX-IN-1 binds to the active sites of XO, 5-LOX, COX-1 and COX-2, thereby blocking enzyme activities associated with uric acid, leukotriene, prostaglandin synthesis and inflammatory pathways. XO/COX/LOX-IN-1 can be used in the research of hyperuricemia and inflammation.
    XO/COX/LOX-IN-1
  • HY-151974
    Xanthine oxidoreductase-IN-4
    		Inhibitor
    Xanthine oxidoreductase-IN-4 is an orally active xanthine oxidoreductase (XOR) inhibitor. Xanthine oxidoreductase-IN-4 has inhibitory activity against XOR with an IC50 value of 29.3 nM. Xanthine oxidoreductase-IN-4 can be used for the research of hyperuricemia.
    Xanthine oxidoreductase-IN-4
  • HY-N10741
    Ellagic acid 4-O-β-D-xylopyranoside
    		Inhibitor
    Ellagic acid 4-O-β-D-xylopyranoside is a natural ellagitannin with antimicrobial activity. Ellagic acid 4-O-β-D-xylopyranoside is an xanthine oxidase inhibitor with an 50 of 2.1 μg/mL.
    Ellagic acid 4-O-β-D-xylopyranoside
  • HY-150257
    Xanthine oxidase-IN-10
    		Inhibitor
    Xanthine oxidase-IN-10 (XO8 analog) is an xanthine oxidase (XO) inhibitor.
    Xanthine oxidase-IN-10
  • HY-152696
    6-O-Methylinosine
    		99.17%
    6-O-Methylinosine is a hypoxanthine analogue. Hypoxanthine is a kind of purine base mainly present in muscle tissue. And it is a metabolite produced by purine oxidase acting on xanthine. Hypoxanthine has typical anti-inflammatory effects and is a potential endogenous poly(ADP-ribose) polymerase (PARP) inhibitor. It is cytoprotective by inhibiting PAPR activity, inhibiting peroxynitrite-induced mitochondrial depolarization and secondary superoxide production. Hypoxanthine can also be used as an indicator of hypoxia.
    6-O-Methylinosine
  • HY-W104467
    (+/-)-Epicatechin
    		Inhibitor
    (+/-)-Epicatechin is a xanthine oxidase inhibitor with an IC50 of 982.14 μM, and can be found in Semen Plantaginis (Plantago seed). (+/-)-Epicatechin can be used in research on diseases such as hyperuricemia and gout .
    (+/-)-Epicatechin
  • HY-N1162
    Tetrahydroamentoflavone
    		Inhibitor
    Tetrahydroamentoflavone (Amentoflavanone) is a potent xanthine oxidase (XO) inhibitor. Tetrahydroamentoflavone has inhibitory activity for XO with IC50 and Ki values of 92 nM and 0.982 μM, respectively. Tetrahydroamentoflavone can be used for the research of inflammatory disorders and gout.
    Tetrahydroamentoflavone
  • HY-N10433
    Xanthine oxidase-IN-9
    		Inhibitor
    Xanthine oxidase-IN-9 (Icarisids E) (Compound 2) is a potent xanthine oxidase (XOD) inhibitor with an IC50 of 31.81 μM.
    Xanthine oxidase-IN-9
  • HY-N10411
    Morin 3-O-β-D-glucopyranoside
    		Inhibitor
    Morin 3-O-β-D-glucopyranoside is a natural flavonoid with antifungal, anticancer and antioxidant activities. Morin 3-O-β-D-glucopyranoside inhibits reverse transcriptase, protein-tyrosine kinase and xanthine oxidase, and also shows anti-HIV, antiarteriosclerotic, and superoxide scavenging activities.
    Morin 3-O-β-D-glucopyranoside
  • HY-W012658R
    2-Methylacetophenone (Standard)
    		Inhibitor
    2-Methylacetophenone (O-Methylacetophenone) (Standard) is the analytical standard of 2-Methylacetophenone (HY-W012658). This product is intended for research and analytical applications. 2-Methylacetophenone (O-Methylacetophenone), acetophenone derivative and acaricide, is a xanthine dehydrogenase (XDH) inhibitor. 2-Methylacetophenone competitively binds to the XDH active site, blocking the pathway for xanthine to be converted to uric acid. 2-Methylacetophenone can be used for the study of hyperuricemia and house dust.
    2-Methylacetophenone (Standard)
  • HY-N1547
    Prudomestin
    		Inhibitor 98.68%
    Prudomestin, isolated from the heartwood of Prunus domestica, shows potent xanthine oxidase (XO) inhibitory activity (IC50≈6 µM).
    Prudomestin
  • HY-144303
    Xanthine oxidase-IN-4
    		Inhibitor
    Xanthine oxidase-IN-4 (compound 19a) is an orally active and potent xanthine oxidase (XO) inhibitor, with an IC50 of 0.039 μM. Xanthine oxidase-IN-4 exhibits hypouricemic potency in potassium oxonate induced hyperuricemia rats. Xanthine oxidase-IN-4 can be used for hyperuricemia and gout research.
    Xanthine oxidase-IN-4
  • HY-N17611
    5,6,7-Trihydroxy-4'-methoxyflavone
    		Inhibitor
    5,6,7-Trihydroxy-4'-methoxyflavone (4'-O-Methylscutellarein) is a flavonoid and a weak inhibitor of xanthine oxidase. 5,6,7-Trihydroxy-4'-methoxyflavone possesses antithrombotic and antioxidant activities. 5,6,7-Trihydroxy-4'-methoxyflavone has an IC50 value of 25.29 µM for DPPH free radical scavenging. 5,6,7-Trihydroxy-4'-methoxyflavone can also inhibit H2O2-induced damage to PC12 cells. 5,6,7-Trihydroxy-4'-methoxyflavone is applicable for the research of diseases such as cerebrovascular disorders.
    5,6,7-Trihydroxy-4'-methoxyflavone
  • HY-N0358R
    1,4-Dicaffeoylquinic acid (Standard)
    		Inhibitor
    1,4-Dicaffeoylquinic acid (Standard) (1,4-DCQA (Standard)) is the analytical standard of 1,4-Dicaffeoylquinic acid (HY-N0358). This product is intended for research and analytical applications. 1,4-Dicaffeoylquinic acid (1,4-DCQA) is a phenylpropanoid compound that can be isolated from Xanthii fructus and an inhibitor of xanthine oxidase (IC50: 7.36 μM). 1,4-Dicaffeoylquinic acid has anti-inflammatory activity and can inhibit the production of TNF-α induced by LPS (HY-D1056).
    1,4-Dicaffeoylquinic acid (Standard)
  • HY-B0219S1
    Allopurinol-13C,15N2
    Allopurinol-13C,15N2 is the 13C- and 15N-labeled labeled Allopurinol (HY-B0219). Allopurinol is a potent and orally active xanthine oxidase inhibitor with an IC50 value of 0.2-50 μM. Allopurinol can be used in the research of hyperuricemia and gout. Allopurinol decreases the expression of HIF-1α and HIF-2α protein. Allopurinol shows anti-depressant and anti-nociception activity. Anti-leishmanial effect.
    Allopurinol-<sup>13</sup>C,<sup>15</sup>N<sub>2</sub>
  • HY-116694
    Digallic acid
    		Inhibitor
    Digallic acid is an antioxidant, antimutagenic, antigenotoxic, and anti-hyperuricemic compound. Digallic acid is a reverse transcriptase and XOD, URAT1 (IC50: 5.34 μM) inhibitor. Digallic acid scavenges DPPH· and O2·− radicals. Digallic acid induces apoptosis. Digallic acid can be isolated from the fruits of Pistascia lentiscus.
    Digallic acid
  • HY-N10108
    Protosappanin A dimethyl acetal
    		Inhibitor
    Protosappanin A dimethyl acetal is a homoisoflavonoid. Protosappanin A dimethyl acetal can be isolated from Caesalpinia sappan. Protosappanin A dimethyl acetal is also a competive inhibitor with significant xanthine oxidase inhibitory activity (IC50=50.7 μM).
    Protosappanin A dimethyl acetal
  • HY-113978R
    6-Formylpterin (Standard)
    		Inhibitor
    6-Formylpterin (Standard) is the analytical standard of 6-Formylpterin. This product is intended for research and analytical applications. 6-Formylpterin is an inhibitor of Xanthine Oxidase. 6-Formylpterin induces intracellular ROS generation and apoptosis in HL-60 cells. 6-Formylpterin suppresses cell proliferation in PanC-1 cells.
    6-Formylpterin (Standard)
  • HY-161514
    Xanthine oxidase-IN-15
    		Inhibitor
    Xanthine oxidase-IN-15 (Compound 6c) is a selective inhibitor of Xanthine oxidase (XO) (IC50=0.13 μM). Xanthine oxidase-IN-15 inhibits XO catalysis by forming a stable interaction with the active site of XO. Xanthine oxidase-IN-15 is mainly used in the study of hyperuricemia and gout.
    Xanthine oxidase-IN-15
  • HY-12136R
    Purpurogallin (Standard)
    		Inhibitor
    Purpurogallin (Standard) is the analytical standard of Purpurogallin. This product is intended for research and analytical applications. Purpurogallin is a naturally phenol extracted from the plants of Quercus spp, has potent xanthine oxidase (XO) inhibitory activity with an IC50 of 0.2 μM. Purpurogallin has antioxidant and anti-inflammatory effects.
    Purpurogallin (Standard)
Cat. No. Product Name / Synonyms Application Reactivity