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

NO Synthase

Nitric oxide synthases; NOS

NO Synthase

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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.

NO Synthase Isoform Specific Products:

NO Synthase Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-N0455AS2
    L-Arginine-d7 hydrochloride
    		Activator 99.72%
    L-Arginine-d7 (hydrochloride) is the deuterium 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-d<sub>7</sub> hydrochloride
  • HY-N1363
    Royal Jelly acid
    		Inhibitor 99.42%
    Royal Jelly Acid ((E)-Queen Bee Acid) is a major fatty acid found in royal jelly with oral bioavailability, exhibiting anti-inflammatory, anticancer, antimalarial, antiprotozoal, and neuroregulatory activities. Royal Jelly Acid can be used for research in various fields, including cancer, infections, immune inflammation, and neurological diseases.
    Royal Jelly acid
  • HY-N0698
    Crocin II
    		Inhibitor 99.40%
    Crocin II is isolated from the fruit of Gardenia jasminoides with antioxidant, anticancer, and antidepressant activity. Crocin II inhibits NO production with an IC50 value of 31.1 μM. Crocin II suppresses the expressions of protein and m-RNA of iNOS and COX-2.
    Crocin II
  • HY-B1715
    Oxiracetam
    		Inhibitor 99.89%
    Oxiracetam (ISF2522) is an orally active and a BBB-penatrable cyclic derivative of γ-aminobutyric acid (GABA). Oxiracetam reaches the hippocampus and cerebral cortex in high concentrations. Oxiracetam can promote cognitive function and regulate inflammatory response, with powerful neuroprotective effects. Oxiracetam can be used in the study of central nervous system diseases .
    Oxiracetam
  • HY-15731
    Estetrol
    		Activator 99.62%
    Estetrol, an orally active estrogen synthesized exclusively during pregnancy by the human fetal liver, is a selective nuclear estrogen receptor modulator. Estetrol binds ERα as well as ERβ (with a fourfold lower affinity). Estetrol increases eNOS expression/activity and NO synthesis in endothelial cells. Estetrol exerts estrogenic actions on the endometrium or the central nervous system but presents antagonistic effects on the breast. Estetrol can be used in contraception and menopausal hormone research.
    Estetrol
  • HY-N0268
    Irisflorentin
    		Inhibitor 99.76%
    Irisflorentin, a naturally occurring isoflavone, is an abundant active constituent in Belamcanda chinensis. Irisflorentin markedly reduces the transcriptional and translational levels of inducible nitric oxide synthase (iNOS) as well as the production of NO. Anti-inflammatory activity.
    Irisflorentin
  • HY-N0455AS1
    L-Arginine-15N4 hydrochloride
    		Activator 99.85%
    L-Arginine-15N4 (hydrochloride) is the 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[1].
    L-Arginine-<sup>15</sup>N<sub>4</sub> hydrochloride
  • HY-W016412
    Coenzyme Q0
    		Inhibitor 99.88%
    Coenzyme Q0 (CoQ0) is a potent, oral active ubiquinone compound can be derived from Antrodia cinnamomea. Coenzyme Q0 induces apoptosis and autophagy, suppresses of HER-2/AKT/mTOR signaling to potentiate the apoptosis and autophagy mechanisms. Coenzyme Q0 regulates NFκB/AP-1 activation and enhances Nrf2 stabilization in attenuation of inflammation and redox imbalance. Coenzyme Q0 has anti-angiogenic activity through downregulation of MMP-9/NF-κB and upregulation of HO-1 signaling.
    Coenzyme Q0
  • HY-N0721
    Neoandrographolide
    		Modulator 99.65%
    Neoandrographolide is a diterpenoid compound isolated from Andrographis paniculata. Neoandrographolide inhibits osteoclasts differentiation and bone resorption through inhibition of MAPK/NF-κB/PI3K/AKT/GSK3β/PPAR/CAMK signaling pathway. Neoandrographolide inhibits apoptosis in rat embryonic ventricular cardiomyocytes. Neoandrographolide inhibits iNOS and the generation of ROS, activates eNOS, exhibiting anti-inflammatory and hypolipidemic activity.
    Neoandrographolide
  • HY-N0455B
    L-Arginine (L-glutamate)
    		≥98.0%
    L-Arginine L-glutamate ((S)-(+)-Arginine L-glutamate) is the nitrogen donor for synthesis of nitric oxide. L-Arginine L-glutamate can be used for upper gastrointestinal hypofunction or dysfunction like functional dyspepsia research.
    L-Arginine (L-glutamate)
  • HY-112868B
    ABH hydrochloride
    		Activator 99.83%
    ABH (hydrochloride) is an orally active arginase inhibitor (Ki = 8.5 nM). ABH hydrochloride promotes NO production and reduces the expression of inflammatory response-related molecules (ICAM-1, VCAM-1, MCP-1). ABH hydrochloride improves erectile function, reduces lung damage, promotes wound healing, reduces arterial blood pressure, and improves vascular fibrosis.
    ABH hydrochloride
  • HY-D0958
    Methylene blue hydrate
    		Inhibitor
    Methylene blue (Basic Blue 9) hydrate is a guanylyl cyclase (sGC), monoamine oxidase A (MAO-A) and NO synthase (NOS) inhibitor. Methylene blue is a vasopressor and is often used as a dye in several medical procedures. Methylene blue hydrate through the nitric oxide syntase/guanylate cyclase signalling pathway to reduce prepulse inhibition. Methylene blue hydrate is a REDOX cycling compound and able to cross the blood-brain barrier. Methylene blue hydrate is a Tau aggregation inhibitor. Methylene blue hydrate reduces cerebral edema, attenuated microglial activation and reduced neuroinflammation.
    Methylene blue hydrate
  • HY-Y0078
    Cinnamyl Alcohol
    		Inhibitor 99.80%
    Cinnamyl Alcohol is an active component from chestnut flower, inhibits increased PPARγ expression, with anti-obesity activity.
    Cinnamyl Alcohol
  • HY-111804
    3',4'-Dihydroxyflavonol
    		Activator 99.33%
    3',4'-Dihydroxyflavonol (DiOHF) is an effective antioxidant, which reduces superoxide and improves nitric oxide (NO) function in diabetic rat mesenteric arteries.
    3',4'-Dihydroxyflavonol
  • HY-N0023
    Cistanoside A
    		Inhibitor 99.39%
    Cistanoside A is a phenylethanoid isolated from Cistanche deserticola, reduces NO accumulation, but shows no effect on iNOS mRNA, iNOS protein levels or iNOS activity. Anti-inflammatory effect.
    Cistanoside A
  • HY-134216
    MAHMA NONOate
    MAHMA NONOate is a NO donor. MAHMA NONOate effectively inhibits platelet aggregation induced by either collagen or ADP.
    MAHMA NONOate
  • HY-12119
    GW274150
    		Inhibitor ≥98.0%
    GW274150 is a potent, selective, orally active and NADPH-dependent inhibitor of human inducible nitric oxide synthase (iNOS) (IC50=2.19 μM; Kd=40 nM) and rat iNOS (ED50=1.15 μM). GW274150 also displays less potency for both humans or rats endothelial NOS (eNOS) and neuronal NOS (nNOS). GW274150 exerts a protective role in an acute model of lung injury inflammation.
    GW274150
  • HY-N0041
    Ginsenoside Rb3
    		Inhibitor 99.12%
    Ginsenoside Rb3 is extracted from steamed Panax ginseng C. A. Meyer. Ginsenoside Rb3 exhibits inhibitory effect on TNFα-induced NF-κB transcriptional activity with an IC50 of 8.2 μM in 293T cell lines. Ginsenoside Rb3 also inhibits the induction of COX-2 and iNOS mRNA.
    Ginsenoside Rb3
  • HY-102062
    Nω-Propyl-L-arginine
    		Inhibitor 98.62%
    Nω-Propyl-L-arginine (N-omega-Propyl-L-arginine) is a potent, competitive, and highly selective inhibitor of neuronal nitric oxide synthase (nNOS), with a Ki of 57 nM. Nω-Propyl-L-arginine displays a 149-fold selectivity for nNOS over endothelial NOS (eNOS).
    Nω-Propyl-L-arginine
  • HY-136341
    7,8-Dihydroneopterin
    		Activator 99.79%
    7,8-Dihydroneopterin, an inflammation marker, induces cellular apoptosis in astrocytes and neurons via enhancement of nitric oxide synthase (iNOS) expression. 7,8-Dihydroneopterin can be used in the research of neurodegenerative diseases.
    7,8-Dihydroneopterin
Cat. No. Product Name / Synonyms Application Reactivity
NO Synthase Isoform Comparison

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