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-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-N15496
    Fusaproliferin
    Inhibitor
    Fusaproliferin is a sesterterpene mycotoxin isolated from Fusarium solani. Fusaproliferin reverse Lipopolysaccharides (HY-D1056) stimulation and the NF-κB and MAPKs signaling pathways contribute to the anti-inflammatory process. Fusaproliferin exhibits affinity for the TLR4 protein with KD values of 28.6 μM. Fusaproliferin shows cytotoxicity against pancreatic cancer cell with rapid and sub-micromolar IC50.
    Fusaproliferin
  • 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-101304
    S-Isopropylisothiourea hydrobromide
    Inhibitor ≥98.0%
    S-Isopropylisothiourea (IPTU) hydrobromide is a potent and selective inhibitor of Nitric Oxide Synthase (NOS). S-Isopropylisothiourea (IPTU) hydrobromide is used in the research for hemorrhagic shock.
    S-Isopropylisothiourea hydrobromide
  • HY-101238R
    Agmatine sulfate (Standard)
    Inhibitor
    Agmatine (sulfate) (Standard) is the analytical standard of Agmatine (sulfate). This product is intended for research and analytical applications. 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 (Standard)
  • HY-N2180R
    Pinoresinol dimethyl ether (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.
    Pinoresinol dimethyl ether (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-N1445R
    Isoquercitrin (Standard)
    Inhibitor
    Isoquercetin (Standard) is the analytical standard of Isoquercetin. This product is intended for research and analytical applications. Isoquercetin (Quercetin 3-glucoside) is a naturally occurring polyphenol that has antioxidant, anti-proliferative, and anti-inflammatory properties. Isoquercetin alleviates ethanol-induced hepatotoxicity, oxidative stress, and inflammatory responses via the Nrf2/ARE antioxidant signaling pathway. Isoquercetin regulates the expression of nitric oxide synthase 2 (NO2) via modulating the nuclear factor-κB (NF-κB) transcription regulation system. Isoquercetin has high bioavailability and low toxicity, is a promising candidate agent to prevent birth defects in diabetic pregnancies.
    Isoquercitrin (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-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>
  • HY-N8012
    Multinoside A
    Inhibitor
    Multinoside A (compound 6) is an antioxidant with DPPH free radical scavenging activity (IC50=54.3 μg/mL). Multinoside A can also downregulate COX-2 expression (IC50=9.6 μg/mL) and inhibit NO production (IC50=43.9 μg/mL).
    Multinoside A
  • HY-149671
    Anti-inflammatory agent 63
    Inhibitor
    Anti-inflammatory agent 63 is an anti-inflammatory agent that shows optimal inhibitory activity (EC50 = 5.33±0.57 μM) against the production of nitric oxide (NO) induced by lipopolysaccharide (LPS) in RAW264.7 cells.
    Anti-inflammatory agent 63
  • HY-107744R
    Nalmefene (Standard)
    Inhibitor
    Nalmefene (Standard) is the analytical standard of Nalmefene. This product is intended for research and analytical applications. Nalmefene is a long acting opioid (MOR and DOR antagonist), and a partial KOR agonist. Nalmefene is used for opioid overdose and alcohol dependence.
    Nalmefene (Standard)
  • HY-N15334
    Tricrozarin A
    Inhibitor
    Tricrozarin A is a Naphthazarin (HY-N7526) derivative, which is found in fresh bulbs of Tritonia crocosmaeflora. Tricrozarin A exhibits antimicrobial activity against gram-positive bacteria, fungi, and yeast.
    Tricrozarin A
  • HY-10230R
    Midostaurin (Standard)
    Activator
    Midostaurin (Standard) is the analytical standard of Midostaurin. This product is intended for research and analytical applications. Midostaurin (PKC412; CGP 41251) is an orally active, reversible multi-targeted protein kinase inhibitor. Midostaurin inhibits PKCα/β/γ, Syk, Flk-1, Akt, PKA, c-Kit, c-Fgr, c-Src, FLT3, PDFRβ and VEGFR1/2 with IC50s ranging from 22-500 nM. Midostaurin also upregulates endothelial nitric oxide synthase (eNOS) gene expression. Midostaurin shows powerful anticancer effects.
    Midostaurin (Standard)
Cat. No. Product Name / Synonyms Application Reactivity

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