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-18729A
    L-NAME hydrochloride
    		Inhibitor 99.89%
    L-NAME hydrochloride inhibits NOS with an IC50 of 70 μM. L-NAME is a precursor to NOS inhibitor L-NOARG which has an IC50 value of 1.4 μM. L-NAME hydrochloride requires hydrolysis of the methyl ester by cellular esterases to become a fully functional inhibitor. L-NAME hydrochloride can be used to induce hypertension and preeclampsia models.
    L-NAME hydrochloride
  • HY-13683
    Mifepristone
    		Inhibitor 99.88%
    Mifepristone (RU486) is a progesterone receptor (PR) and glucocorticoid receptor (GR) antagonist with IC50s of 0.2 nM and 2.6 nM in in vitro assay.
    Mifepristone
  • HY-N0455
    L-Arginine
    		Activator 99.89%
    L-Arginine ((S)-(+)-Arginine) is the substrate for the endothelial nitric oxide synthase (eNOS) to generate NO. L-Arginine is transported into vascular smooth muscle cells by the cationic amino acid transporter family of proteins where it is metabolized to nitric oxide (NO), polyamines, or L-proline. L-Arginine is a potent vasodilator, and can be used to induce experimental acute pancreatitis.
    L-Arginine
  • HY-100573
    Necrosulfonamide
    		Inhibitor 98.61%
    Necrosulfonamide is a MLKL and Gasdermin D (GSDMD) inhibitor, capable of separately inhibiting necroptosis and pyroptosis of cells. Necrosulfonamide does not affect the activation of upstream signals, but specifically inhibits the downstream executor oligomerization step. Necrosulfonamide reduces the expression of the key kinases NLRP3 and caspase-1 involved in necroptosis and pyroptosis, activate the Nrf2 pathway and the downstream antioxidant enzymes, and also downregulates a variety of inflammatory factors. Necrosulfonamide plays significant roles in various diseases such as neurodegenerative diseases (such as Parkinson’s disease), tissue damage and ischemia-reperfusion injury, inflammatory bowel disease, osteoarthritis and fracture repair, and hair loss by regulating two important programmed necrosis pathways.
    Necrosulfonamide
  • HY-P1956
    Human serum albumin
    		Inhibitor 99.9%
    Human serum albumin (HSA) is the most abundant protein in plasma and is a major determinant of plasma oncotic pressure. Human serum albumin exhibits antioxidant, anticoagulant, anti-inflammatory, anti-platelet aggregation activities as well as colloid osmotic action. Human serum albumin can block the inhibitory effect of GML on human T cells, providing protective function for T cells. Human serum albumin 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, NF-κB, and peroxynitrite (ONOO−) in the vascular wall, contributing to the reduction of blood pressure.
    This product is recombinant Human Serum Albumin expressed in a microbial expression system.
    Human serum albumin
  • HY-W011592
    N-Phthaloyl-L-glutamic acid
    N-Phthaloyl-L-glutamic acid is an orally active anti-inflammatory agent. N-Phthaloyl-L-glutamic acid inhibits Lipopolysaccharides (HY-D1056) (LPS)-induced nitric oxide production in murine spleen cells. N-Phthaloyl-L-glutamic acid does not exhibit significant cytotoxicity in vitro against tumor cells and BALB/c mice spleen cell culture. N-Phthaloyl-L-glutamic acid can be used for the research of inflammation.
    N-Phthaloyl-L-glutamic acid
  • HY-N1192
    Sutherlandin trans-p-coumarate
    		Inhibitor
    Sutherlandin trans-p-coumarate is a selective γ-hydroxynitrile glycoside compound with moderate inhibitory activity on nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages (56.9% inhibition at a concentration of 25 μg/mL). Sutherlandin trans-p-coumarate can be naturally extracted from the dried aerial parts of Sorbaria sorbifolia (a plant of the genus Sorbaria in the Rosaceae family).
    Sutherlandin trans-p-coumarate
  • HY-P11380
    Capa-2
    		Activator
    Capa-2 is a neuropeptide. Capa-2 activates calcium ion influx, stimulates the production of NO, activates soluble guanylate cyclase (sGC), increases intracellular cGMP, and drives ion and fluid secretion. Capa-2 can be used in studies of diuresis.
    Capa-2
  • HY-107632
    GYY4137
    		Inhibitor 98.08%
    GY4137 is a sustained-release H2S donor possessing vasodilatory, antihypertensive, and anti-inflammatory activities. GY4137 can inhibit cell growth, induce apoptosis, and cause cell cycle arrest by blocking the STAT3 pathway, demonstrating potent anticancer activity.
    GYY4137
  • HY-146245
    ODN 1826
    		Inducer 99.69%
    ODN 1826 is a class B CpG ODN (oligodeoxynucleotide) and TLR9 agonist. ODN 1826 induces NO and iNOS production and enhances Apoptosis. ODN 1826 enhances immune surveillance. ODN 1826 increases aortic atherosclerotic plaque size. ODN 1826 has antitumor activity against lung cancer, glioma and melanoma.
    ODN 1826
  • HY-10230
    Midostaurin
    		Activator 99.89%
    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
  • HY-107690
    DMPO
    		Activator 99.98%
    DMPO is a cell permeable hydrophillic spin trap agent for superoxide detection.
    DMPO
  • HY-146245C
    ODN 1826 sodium
    		Inducer 99.51%
    ODN 1826 sodium is a class B CpG ODN (oligodeoxynucleotide) and TLR9 agonist. ODN 1826 sodium induces NO and iNOS production and enhances Apoptosis. ODN 1826 sodium enhances immune surveillance. ODN 1826 sodium increases aortic atherosclerotic plaque size. ODN 1826 sodium has antitumor activity against lung cancer, glioma and melanoma.
    ODN 1826 sodium
  • HY-154629
    Sesame Oil
    		Inhibitor 98.2%
    Sesame Oil is a vegetable oil. Sesame Oil can be extracted from the seeds of Sesamum indicum L. Sesame Oil decreases NF-κB, aspartate aminotransferase, alanine aminotransferase, IL-1β, IL-4 and nitric oxide. Sesame Oil has antitumor activity against malignant melanoma. Sesame Oil has protective effects against liver damage caused by various agents such as Cisplatin (HY-17394) and Acetaminophen (HY-66005). Sesame Oil shows antinociceptive and anti-inflammatory activities.
    Sesame Oil
  • HY-100807
    Quinolinic acid
    		Activator 99.97%
    Quinolinic acid, an endogenous metabolite of tryptophan, is a N-methyl-D-aspartate receptor (NMDA receptor) agonist. Quinolinic acid increases glutamate efflux, induces the generation of ROS, activates nitric oxide synthase, produces excessive NO, leading to calcium ion influx and neuronal apoptosis.
    Quinolinic acid
  • HY-136278
    DETA NONOate
    		Activator 98.10%
    DETA NONOate (NOC 18) is an exogenous nitric oxide (NO) donor. DETA NONOate shows a slow release normal amounts of NO and long-acting.
    DETA NONOate
  • HY-121526
    S-Nitroso-N-acetyl-DL-penicillamine
    		Agonist 98.76%
    S-Nitroso-N-acetyl-DL-penicillamine (SNAP) is a nitric oxide donor and acts as a stable inhibitor of platelet aggregation.
    S-Nitroso-N-acetyl-DL-penicillamine
  • HY-18731
    1400W Dihydrochloride
    		Inhibitor 99.94%
    1400W dihydrochloride is the dihydrochloride form of 1400W (HY-18730). 1400W is a slow, tight binding, and highly selective inducible nitric-oxide synthase (iNOS) inhibitor, with a Kd value ≤ 7 nM. 1400W inhibits iNOS induction in microglial cells, and reduces generation of NO, thereby mitigating oxidative stress and neuronal cell apoptosis in the rat cerebral cortex, and improving the spatial memory dysfunction caused by acute hypobaric hypoxia-reoxygenation.
    1400W Dihydrochloride
  • HY-N1445
    Isoquercitrin
    		Inhibitor 99.64%
    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
  • HY-B1773A
    Sodium propionate
    		Inhibitor 99.0%
    Sodium propionate is an orally active short-chain fatty acid. Sodium propionate can be produced by intestinal bacteria from the metabolism of dietary fiber. Sodium propionate increases PPAR-γ, inhibits NF-κB activation, and reduces COX-2 expression and NO production. Sodium propionate also induces Apoptosis and Autophagy. Sodium propionate reduces HSV-1-induced keratitis. Sodium propionate has anticancer effects against glioblastoma. Sodium propionate exhibits neuroprotective, antioxidant, and anti-inflammatory activities. Sodium propionate can be used in the research of spinal cord injury and Alzheimer's disease.
    Sodium propionate
Cat. No. Product Name / Synonyms Application Reactivity
NO Synthase Isoform Comparison

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