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-N0152
    Myricitrin
    Inhibitor 99.76%
    Myricitrin, a naturally occurring flavonoid, is an orally active nitric oxide (NO) and PKC inhibitor. Myricitrin has central nervous system activity, including anxiolytic-like action. Myricitrin possesses antioxidant, anti-inflammatory, antifibrotic and anti-malarial effects.
    Myricitrin
  • 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-N0455AS1
    L-Arginine-15N4 hydrochloride
    Activator 99.94%
    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.
    L-Arginine-<sup>15</sup>N<sub>4</sub> hydrochloride
  • HY-69019
    7-Nitroindazole
    Inhibitor 99.09%
    7-Nitroindazole is a selective and BBB-penetrable inhibitor of nitric oxide synthase (NOS) (IC50 = 0.47 μM in mouse cerebellum). 7-Nitroindazole does not affect blood pressure or endothelium-dependent relaxation while inhibiting nNOS in experimental animals. 7-Nitroindazole has anti-injurious and neuroprotective properties, and can be studied in research for neurological diseases such as Parkinson’s disease.
    7-Nitroindazole
  • HY-W016412
    Coenzyme Q0
    Inhibitor 99.79%
    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-N1363
    Royal Jelly acid
    Inhibitor 99.95%
    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-N0041
    Ginsenoside Rb3
    Inhibitor 99.87%
    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-Y1267D
    Magnesium sulfate, for cell culture
    99.0%
    Magnesium sulfate, for cell culture is a bioreagent. 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, for cell culture
  • HY-N0589
    Dehydrodiisoeugenol
    Inhibitor 99.98%
    Dehydrodiisoeugenol is an orally active anti-inflammatory and anti-tumor agent. Dehydrodiisoeugenol inhibits the proliferation of colorectal cancer cells, and induces apoptosis, autophagy, endoplasmic reticulum stress and cell cycle arrest. Dehydrodiisoeugenol also exerts anti-inflammatory effects by inhibiting the activation of NF-κB and the expression of COX-2. Dehydrodiisoeugenol can be used in the research related to colorectal cancer, inflammatory diseases and ulcerative colitis.
    Dehydrodiisoeugenol
  • HY-12119
    GW274150
    Inhibitor 98.42%
    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-121705
    Propionyl-L-carnitine
    Activator
    Propionyl-L-carnitine is an orally active L-carnitine derivative. Propionyl-L-carnitine has a high affinity for muscle L-carnitine transferase. Propionyl-L-carnitine increases Apoptosis, Bax, and reduces NF-κB, VCAM-1, MCP-1, and survivin. Propionyl-L-carnitine activates Src kinase, Akt, induces p-AMPK and nitric oxide synthesis. Propionyl-L-carnitine alleviates cardiovascular disease, obesity, and colitis.
    Propionyl-L-carnitine
  • HY-B1715
    Oxiracetam
    Inhibitor 99.86%
    Oxiracetam (ISF2522) is an orally active and a BBB-penetrable 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-128754
    Monoolein
    Inhibitor 99.91%
    Monoolein is a biocompatible lipid molecule that can be used as a carrier for bone repair. Monoolein exhibits anti-inflammatory activity by inhibiting the immune response induced by LPS (HY-D1056). It exerts its anti-inflammatory effects by reducing the production of immune response factors such as IL-12 p40, IL-6, and TNF-α, and inhibiting the generation of NO. Monoolein can be used in drug delivery and research in the field of inflammatory diseases .
    Monoolein
  • HY-15731
    Estetrol
    Activator 99.76%
    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-N0721
    Neoandrographolide
    Modulator 99.41%
    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-Y0148
    10-Hydroxydecanoic acid
    Inhibitor 99.77%
    10-Hydroxydecanoic acid (10-HDAA) is a saturated fatty acid derived from 10-hydroxy-trans-2-decenoic acid, which can be isolated from royal jelly. 10-Hydroxydecanoic acid exhibits various biological activities, including anti-inflammatory, insecticidal, anti-malarial, and anti-Leishmania properties, as well as enhancing antigen-specific immune responses. The anti-inflammatory effects of 10-Hydroxydecanoic acid are primarily mediated by inhibiting the activation of NF-κB and the translation of interferon regulatory factor 1 (IRF-1), which reduces the production of interleukin 6 (IL-6) and nitric oxide (NO) in inflammatory cells. Additionally, 10-Hydroxydecanoic acid alleviates neuroinflammatory responses through the p53-autophagy pathway and the p53-NLRP3 pathway. Finally, 10-Hydroxydecanoic acid enhances antigen-specific immune responses by promoting the effective uptake of antigens by microfold cells.
    10-Hydroxydecanoic acid
  • HY-N5112B
    β,β-Dimethylacrylshikonin
    MDM2 Inhibitor 99.30%
    β,β-Dimethylacrylshikonin (Isoarnebin I) is a naphthoquinone derivative that can be isolated from Lithospermum erythrorhizon Sieb. et Zucc. β,β-Dimethylacrylshikonin promotes angiogenesis by inducing eNOS, VEGF and HIF-1α expression through the PI3K-dependent pathway. β,β-Dimethylacrylshikonin inhibits Notch-1 activation. β,β-Dimethylacrylshikonin inhibtis tumor cell proliferation, induces tumor cell apoptosis, and inhibits tumor growth.
    β,β-Dimethylacrylshikonin
  • HY-B1092
    Gluconate Calcium
    Inhibitor 98.0%
    Gluconate (D-Gluconic acid) Calcium is an orally active glucose derivative. Gluconate Calcium reduces nitric oxide and inflammatory cytokines (IL-1β and IL-6). Gluconate Calcium inhibits ERK phosphorylation. Gluconate Calcium has antioxidant and antiplatelet activation activities. Gluconate Calcium has antitumor activity against colorectal cancer. Gluconate Calcium improves osteoarthritis, intestinal damage and acute lung injury.
    Gluconate Calcium
  • HY-W040045
    Callistephin chloride
    Inhibitor 98.31%
    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.
    Callistephin chloride
  • HY-121615
    α-Phellandrene
    Activator
    α-Phellandrene (alpha-Phellandrene) is an orally active monoterpenoid and insecticide. α-Phellandrene can be isolated from plant essential oils. α-Phellandrene induces Apoptosis and Autophagy. α-Phellandrene promotes cAMP signaling pathway and increases NO production. α-Phellandrene has anti-inflammatory and anticancer (sarcoma) activities. α-Phellandrene shows insecticidal activity against Lucilia cuprina L3. α-Phellandrene reduces mechanical hyperalgesia.
    α-Phellandrene
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