1. Signaling Pathways
  2. Immunology/Inflammation
  3. NO Synthase

NO Synthase

Nitric oxide synthases; NOS

Nitric oxide synthases (NOSs) are a family of enzymes catalyzing the production of nitric oxide (NO) from L-arginine. NO synthases catalyze the oxidation of L-arginine to NO and L-citrulline. Mammals contain three NOS isoforms: neuronal NOS (nNOS), inducible NOS (iNOS), and endothelial NOS (eNOS). NO produced from these different NOS isoforms is involved in a wide range of physiologic functions in the nervous, immune, and cardiovascular systems. Unregulated NO production can lead to pathologic conditions such as stroke, inflammation, and hypertension. Therefore, the control of NOS activity by isoform selective NOS inhibitors has great potential for therapeutic treatments of NO-related diseases.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-18734A
    Carboxy-PTIO potassium
    Inhibitor 99.02%
    Carboxy-PTIO potassium is a potent nitric oxide (NO) scavenger that can make a quick reaction with NO to produce NO2. Carboxy-PTIO potassium can prevent hypotension and endotoxic shock through the direct scavenging action against NO in lipopolysaccharide-stimulated rat model.
    Carboxy-PTIO potassium
  • HY-101238
    Agmatine sulfate
    Inhibitor 98.0%
    Agmatine sulfate exerts modulatory action at multiple molecular targets, such as neurotransmitter systems, ion channels and nitric oxide synthesis. It is an endogenous agonist at imidazoline receptor and a NO synthase inhibitor.
    Agmatine sulfate
  • HY-113556
    Sappanone A
    Inhibitor 99.87%
    Sappanone A is an orally active homoisoflavone found in sappan L. Sappanone A is a PDE4 and NF-κB inhibitor with anti-inflammatory and antioxidant effect. Sappanone A induces HO-1 expression through activation of Nrf2 pathway. Sappanone A also inhibits RANKL-induced osteoclastogenesis. Sappanone A has great potential in the research of inflammation-related and cardiovascular .
    Sappanone A
  • HY-N0455AS8
    L-Arginine-13C6,15N4 hydrochloride
    Activator 99.85%
    L-Arginine-13C6,15N4 (hydrochloride) is the 13C- and 15N-labeled L-Arginine hydrochloride. L-Arginine hydrochloride ((S)-(+)-Arginine hydrochloride) is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis.
    L-Arginine-<sup>13</sup>C<sub>6</sub>,<sup>15</sup>N<sub>4</sub> hydrochloride
  • HY-12116
    L-NIL
    Inhibitor 99.82%
    L-NIL is an inducible NO synthase inhibitor, with an IC50 of 3.3 μM for miNOS.
    L-NIL
  • HY-P1956A
    Human serum albumin (Cell culture grade, Endotoxin<0.125 EU/mg)
    Inhibitor 99.60%
    Human serum albumin (Cell culture grade, Endotoxin<0.125 EU/mg) (HSA) is the most abundant protein in plasma and is a major determinant of plasma oncotic pressure. Human serum albumin (Cell culture grade, Endotoxin<0.125 EU/mg) exhibits antioxidant, anticoagulant, anti-inflammatory, anti-platelet aggregation activities as well as colloid osmotic action. Human serum albumin (Cell culture grade, Endotoxin<0.125 EU/mg) can block the inhibitory effect of GML on human T cells, providing protective function for T cells. Human serum albumin (Cell culture grade, Endotoxin<0.125 EU/mg) is also associated with cardiovascular diseases and can partially prevent the LPS (HY-D1056) induced oxidative stress, as well as the upregulation of NF-κB, iNOS, and peroxynitrite (ONOO) in the vascular wall, contributing to the reduction of blood pressure.
    Human serum albumin (Cell culture grade, Endotoxin<0.125 EU/mg)
  • HY-B1409
    Isosorbide dinitrate
    Activator 99.89%
    Isosorbide dinitrate (ISDN) is an NO donor that prevents LV remodeling and degradation of cardiac function following myocardial infarction (MI).
    Isosorbide dinitrate
  • HY-17003
    Saquinavir mesylate
    Inhibitor 99.84%
    Saquinavir (Ro 31-8959) mesylate is an orally active HIV protease inhibitor that can be used in the research of AIDS. Saquinavir mesylate also has anti-inflammatory activity and can induce apoptosis of human red blood cells.
    Saquinavir mesylate
  • HY-N3007
    Naringenin chalcone
    Inhibitor 99.29%
    Naringenin chalcone is an orally active intermediate in flavonol biosynthesis. Naringenin chalcone induces Apoptosis. Naringenin chalcone inhibits the production of MCP-1 and NO. Naringenin chalcone exhibits anticancer activity against glioblastoma. Naringenin chalcone has anti-inflammatory and anti-allergic properties.
    Naringenin chalcone
  • HY-102015
    6-Biopterin
    99.10%
    6-Biopterin (L-Biopterin), a pterin derivative, is a NO synthase cofactor.
    6-Biopterin
  • HY-Y1267
    Magnesium sulfate
    Inhibitor 99.63%
    Magnesium sulfate is a calcium antagonist and a potent L-type calcium channel inhibitor, as well as a tocolytic. Magnesium sulfate has anti-inflammatory, anticonvulsant, vasodilatory, and neuroprotective effects. Magnesium sulfate can be used in the research of diseases such as preeclampsia/eclampsia.
    Magnesium sulfate
  • HY-N0455AS6
    L-Arginine-13C6 hydrochloride
    Activator 99.00%
    L-Arginine-13C6 (hydrochloride) is the 13C-labeled L-Arginine hydrochloride. L-Arginine hydrochloride ((S)-(+)-Arginine hydrochloride) is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis.
    L-Arginine-<sup>13</sup>C<sub>6</sub> hydrochloride
  • HY-N0217
    Benzoylaconine
    Inhibitor 99.92%
    Benzoylaconine (Benzoylaconitine) is an orally active monoester alkaloid found in the traditional Chinese medicine Aconitum carmichaelii. Benzoylaconine is an ACE2 agonist (EC50: 1.5 μM) with antihypertensive and anti-heart failure effects. Benzoylaconine inhibits TLR-induced MAPK and NF-κB pathways to exert anti-inflammatory effects. Benzoylaconine upregulates the protein levels of P-gp, MRP2, and has anti-tumor effects.
    Benzoylaconine
  • HY-79457
    S-Methylisothiourea sulfate
    Inhibitor 99.94%
    S-Methylisothiourea sulfate is a potent, selective and competitive inhibitor of inducible nitric oxide synthase (iNOS). S-Methylisothiourea sulfate exerts beneficial effects in rodent models of septic shock.
    S-Methylisothiourea sulfate
  • HY-N0396
    Harpagoside
    Inhibitor 99.88%
    Harpagoside can be obtained by Harpagophytum procumbens, which has anti-inflammatory, anti-cancer, protective activity, and efficacy. Harpagoside has an inhibitory effect on COX-1 and COX-2 active, and suppresses NO production. Harpagoside inhibits HepG2 cell lipid polysaccharide, which is a protein that is expressed horizontally and selectively, and has anti-inflammatory and latent pain effects. Harpagoside has the ability to protect the body, and has a degenerative effect on the β-oxidation (Aβ).
    Harpagoside
  • HY-N2406
    Dihydrocaffeic acid
    Activator 99.65%
    Dihydrocaffeic acid is a microbial metabolite of flavonoids. Dihydrocaffeic acid scavenges intracellular ROS and increases nitric oxide synthase activity. Dihydrocaffeic acid reduces phosphorylation of MAPK p38 and prevent UVB-induced skin damage. Dihydrocaffeic acid has antioxidant, anti-inflammatory and anti-cartilage degradation activities.
    Dihydrocaffeic acid
  • HY-131898
    PTIO
    Inhibitor 99.80%
    PTIO is a specific scavenger of NO and redox mediator. PTIO reacts with •NO to form the corresponding imino nitroxides and NO2. PTIO enhances organic contaminants oxidation by permanganate.
    PTIO
  • HY-D0145
    7-Ethoxyresorufin
    Inhibitor 99.61%
    7-Ethoxyresorufin (Resorufin ethyl ether) is a fluorometric substrate and competitive inhibitor of cytochrome P450, especially CYP1A1. 7-Ethoxyresorufin also inhibits NO synthase.
    7-Ethoxyresorufin
  • HY-B2162A
    Chondroitin sulfate sodium (from shark cartilage)
    99.52%
    Chondroitin sulfate sodium (from shark cartilage), one of five classes of glycosaminoglycans, has been widely used in the treatment of osteoarthritis. Chondroitin sulfate reduces inflammation mediators and the apoptotic process and is able to reduce protein production of inflammatory cytokines, iNOS and MMPs.
    Chondroitin sulfate sodium (from shark cartilage)
  • HY-N6966
    Ethyl Caffeate
    Inhibitor 99.34%
    Ethyl Caffeate is a natural phenolic compound isolated from Bidens pilosa. Ethyl caffeate suppresses NF-κB activation and its downstream inflammatory mediators, inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and prostaglandin E2 (PGE2) in vitro or in mouse skin.
    Ethyl Caffeate
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