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-B0679R
    Lubiprostone (Standard)
    		Inhibitor
    Lubiprostone (Standard) is the analytical standard of Lubiprostone. This product is intended for research and analytical applications. Lubiprostone (SPI-0211) increases intestinal fluid secretion through generation of CIC-2/CFTR and activation of cAMP signaling pathway. Lubiprostone inhibits myeloperoxidase (MPO) activity, downregulates Indomethacin (HY-14397)-induced iNOS and TNFα expression. Lubiprostone can be used for chronic constipation research.
    Lubiprostone (Standard)
  • HY-122063
    FR260330
    		Inhibitor
    FR260330 is a selective, orally active inhibitor for inducible nitric oxide synthase (iNOS) through suppression of iNOS dimerization. FR260330 inhibits the NO accumulation in rat splenocytes and human DLD-110 cells, with IC50 of 27 and 10 nM. FR260330 ameliorates the Lipopolysaccharides (HY-D1056)-induced inflammatory diseases in rats model.
    FR260330
  • HY-N1500R
    Pulegone (Standard)
    		Inhibitor
    Pulegone (Standard) is the analytical standard of Pulegone (HY-N1500). This product is intended for research and analytical applications. Pulegone is a monoterpene ketone compound widely present in the essential oils of many plants. Pulegone can also be used as a bird repellent. Pulegone has multiple activities such as anti-inflammatory, antibacterial, antifungal, and anti-hyperalgesic effects. Pulegone is particularly effective against bacteria of the Salmonella species.
    Pulegone (Standard)
  • HY-N12087
    8-Deoxylactucin
    		Inhibitor
    8-Deoxylactucin is an orally active sesquiterpene lactone. 8-Deoxylactucin inhibits LPS (HY-D1056)-induced NO production in RAW264.7 macrophages with an IC50 value of 4.35 μM. 8-Deoxylactucin exerts anti-inflammatory effects by blocking the NF-κB pathway. 8-Deoxylactucin demonstrates hepatoprotective efficacy in LPS/D-galactosamine-induced acute hepatitis model of mice. 8-Deoxylactucin can be used for the study of inflammatory diseases and inflammatory liver injuries.
    8-Deoxylactucin
  • HY-W753779
    8-Hydroxygenistein
    		Inhibitor
    8-Hydroxygenistein (8-OHG) is an antioxidant that can effectively scavenge nitric oxide (NO) and superoxide anion (O₂⁻). 8-Hydroxygenistein belongs to ortho-dihydroxy isoflavones (ODI) and is abundantly present in dark soy sauce and light soy sauce. Its antioxidant activity is stronger than that of its parent compound genistein (HY-14596). The content of 8-Hydroxygenistein is positively correlated with the antioxidant capacity of soy sauce (r = 0.959), and it remains highly stable even after being heated in boiling water for 60 minutes. During the brewing and storage of soy sauce, 8-Hydroxygenistein effectively prevents oxidative damage, making it promising for use in food antioxidant research.
    8-Hydroxygenistein
  • HY-N0635R
    Prim-O-glucosylcimifugin (Standard)
    		Inhibitor
    Prim-O-glucosylcimifugin (Standard) is the analytical standard of Prim-O-glucosylcimifugin. This product is intended for research and analytical applications. Prim-O-glucosylcimifugin exerts anti-inflammatory effects through the inhibition of iNOS and COX-2 expression by through regulating JAK2/STAT3 signaling.
    Prim-O-glucosylcimifugin (Standard)
  • HY-N12224
    1-Heptadecanoyl-rac-glycerol
    		Inhibitor
    1-Heptadecanoyl-rac-glycerol (1-Heptadecanoin) is a glyceride compound with anti-inflammatory activity. 1-Heptadecanoyl-rac-glycerol inhibits the occurrence of inflammation by suppressing the expression of inducible nitric oxide synthase (iNOS) related to inflammation. 1-Heptadecanoyl-rac-glycerol can be used for research on diseases related to inflammation.
    1-Heptadecanoyl-rac-glycerol
  • HY-N3182A
    N-Methylnuciferine iodide
    		Inhibitor
    N-Methylnuciferine iodide, an alkaloid from Lotus Plumule, ameliorate lipopolysaccharide-induced depression-like behavior.
    N-Methylnuciferine iodide
  • HY-B1409R
    Isosorbide dinitrate (Standard)
    		Activator
    Isosorbide dinitrate (Standard) is the analytical standard of Isosorbide dinitrate. This product is intended for research and analytical applications. Isosorbide dinitrate (ISDN) is an NO donor that prevents LV remodeling and degradation of cardiac function following myocardial infarction (MI).
    Isosorbide dinitrate (Standard)
  • HY-U00432B
    S-MTC acetate
    		Inhibitor
    S-MTC acetate (S-Methyl-L-thiocitrulline acetate) acts as a powerful inhibitor of inducible nitric oxide synthase, favoring the inhibition of constitutive (neuronal) nitric oxide synthase over inducible (endothelial) nitric oxide synthase.
    S-MTC acetate
  • HY-N0859B
    Schisanchinin D
    		Modulator
    Schisanchinin D is an NO release inhibitor found in the fruits of Schisandra chinensis. Schisanchinin D can inhibit the release of nitric oxide (NO) by lipopolysaccharide (LPS)-activated microglia in primary murine BV2 microglia cells. Schisanchinin D is promising for research of neurodegenerative diseases such as Alzheimer's disease (AD).
    Schisanchinin D
  • HY-N2180R
    (+)-Eudesmin (Standard)
    		Inhibitor
    Pinoresinol dimethyl ether (Standard) is the analytical standard of Pinoresinol dimethyl ether (HY-N2180). This product is intended for research and analytical applications. Pinoresinol dimethyl ether ((+)-Eudesmin) is a non-phenolic furanoid lignin. Pinoresinol dimethyl ether can be isolated from Magnolia biondii. Pinoresinol dimethyl ether activates MAPK, PKC, and PKA upstream pathways and inhibits NO levels. Pinoresinol dimethyl ether has neuroprotective activity.
    (+)-Eudesmin (Standard)
  • HY-101251R
    AMT hydrochloride (Standard)
    		Inhibitor
    AMT (hydrochloride) (Standard) is the analytical standard of AMT (hydrochloride). This product is intended for research and analytical applications. AMT hydrochloride is a selective inhibitor of inducible NOS (iNOS) with Ki of 4.2 nM.
    AMT hydrochloride (Standard)
  • HY-N0721R
    Neoandrographolide (Standard)
    		Modulator
    Neoandrographolide (Standard) is the analytical standard of Neoandrographolide. This product is intended for research and analytical applications. 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 (Standard)
  • HY-N0396R
    Harpagoside (Standard)
    		Inhibitor
    Harpagoside (Standard) is the analytical standard of Harpagoside. This product is intended for research and analytical applications. 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 (Standard)
  • HY-18732AR
    L-NMMA acetate (Standard)
    		Inhibitor
    L-NMMA (acetate) (Standard) is the analytical standard of L-NMMA (acetate). This product is intended for research and analytical applications. L-NMMA acetate is a nitric oxide synthase inhibitor of all NOS isoforms including NOS1, NOS2, and NOS3. The Ki values for nNOS (rat), eNOS (human), and iNOS (mouse) are approximately 0.18, 0.4, and 6 μM, respectively.
    L-NMMA acetate (Standard)
  • HY-P990252
    Anti-Mouse Delta-like protein 4/DLL4 Antibody (HMD4-2)
    		Inhibitor
    Anti-Mouse Delta-like protein 4/DLL4 Antibody (HMD4-2) is an anti-mouse Delta-like protein 4/DLL4 IgG monoclonal antibody. Anti-Mouse Delta-like protein 4/DLL4 Antibody (HMD4-2) can reduce angiogenesis and density by blocking the DLL4-Notch signaling pathway. Anti-Mouse Delta-like protein 4/DLL4 Antibody (HMD4-2) reduces inflammatory response by decreasing NF-κB activity and pro-inflammatory factors (IL-1β, iNOS, IL-6) levels. Anti-Mouse Delta-like protein 4/DLL4 Antibody (HMD4-2) can inhibit Th17 cell differentiation and IL-17A production. Anti-Mouse Delta-like protein 4/DLL4 Antibody (HMD4-2) can reduce macrophage infiltration and alleviate insulin resistance. Anti-Mouse Delta-like protein 4/DLL4 Antibody (HMD4-2) can be used for researches on inflammation, metabolic conditions and cancer such as atherosclerosis, pancreatic cancer and asthma.
    Anti-Mouse Delta-like protein 4/DLL4 Antibody (HMD4-2)
  • HY-B0679S
    Lubiprostone-d7
    		Inhibitor
    Lubiprostone-d7 (RU-0211-d7) is the deuterium labeled Lubiprostone. Lubiprostone (SPI-0211) increases intestinal fluid secretion through generation of CIC-2/CFTR and activation of cAMP signaling pathway. Lubiprostone inhibits myeloperoxidase (MPO) activity, downregulates Indomethacin (HY-14397)-induced iNOS and TNFα expression. Lubiprostone can be used for chronic constipation research.
    Lubiprostone-d<sub>7</sub>
  • HY-172755
    NO-Rosa5 chloride
    NO-Rosa5 (chloride) is a photocontrollable NO donor. NO-Rosa5 (chloride) is made up of the fluorescent dye rosamie that functions as the light-harvesting group.
    NO-Rosa5 chloride
  • HY-17007S2
    Saquinavir-13C6
    		Inhibitor
    Saquinavir-13C6 (Ro 31-8959-13C6) is 13C labeled Saquinavir (HY-17007). Saquinavir (Ro 31-8959) is an orally active HIV protease inhibitor that can be used in the research of AIDS. Saquinavir also has anti-inflammatory activity and can induce apoptosis of human red blood cells.
    Saquinavir-<sup>13</sup>C<sub>6</sub>
Cat. No. Product Name / Synonyms Application Reactivity
NO Synthase Isoform Comparison

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