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-N2406
    Dihydrocaffeic acid
    		Activator 99.65%
    Dihydrocaffeic acid is a microbial metabolite of flavonoids. Dihydrocaffeic acid scavenges intracellular ROS and increases nitric oxide synthase activity. Dihydrocaffeic acid reduces phosphorylation of MAPK p38 and prevent UVB-induced skin damage. Dihydrocaffeic acid has antioxidant, anti-inflammatory and anti-cartilage degradation activities.
    Dihydrocaffeic acid
  • HY-100986
    L-NIO dihydrochloride
    		Inhibitor
    L-NIO dihydrochloride is a potent, non-selective and NADPH-dependent nitric oxide synthase (NOS) inhibitor, with Kis of 1.7, 3.9, 3.9 μM for neuronal (nNOS), endothelial (eNOS), and inducible (iNOS), respectively. L-NIO dihydrochloride induces a consistentfocal ischemic infarctin rats.
    L-NIO dihydrochloride
  • HY-131898
    PTIO
    		Inhibitor 99.80%
    PTIO is a specific scavenger of NO and redox mediator. PTIO reacts with •NO to form the corresponding imino nitroxides and •NO2. PTIO enhances organic contaminants oxidation by permanganate.
    PTIO
  • HY-B2162A
    Chondroitin sulfate sodium (from shark cartilage)
    		99.52%
    Chondroitin sulfate sodium (from shark cartilage), one of five classes of glycosaminoglycans, has been widely used in the treatment of osteoarthritis. Chondroitin sulfate reduces inflammation mediators and the apoptotic process and is able to reduce protein production of inflammatory cytokines, iNOS and MMPs.
    Chondroitin sulfate sodium (from shark cartilage)
  • HY-13571A
    Beclometasone dipropionate
    		Inhibitor 99.89%
    Beclometasone dipropionate, the proagent of Beclometasone, is an orally active and potent glucocorticoid recepter agonist. Beclometasone dipropionate acts via a glucocorticoid receptor and suppresses inflammation and hyperproliferation. Beclometasone dipropionate can be used for asthma .
    Beclometasone dipropionate
  • HY-N6968
    α-Humulene
    		Inhibitor 98.53%
    α-Humulene is a main constituent of Tanacetum vulgare L. (Asteraceae) essential oil with anti-inflammation (IC50=15±2 μg/mL). α-Humulene inhibits COX-2 and iNOS expression.
    α-Humulene
  • HY-W074890
    Palmitoylglycine
    		Modulator 99.74%
    Palmitoylglycine (N-palmitoyl glycine), an endogenous lipid that acts as a modulator of calcium influx and nitric oxide () production in sensory neurons. Palmitoylglycine is linked to an increased risk of Background Brugada syndrome (BrS) and interacts with BrS-associated proteins, demonstrating moderate binding affinities for DCC, CR1, CTSB, NAAA, DEFB1, EPHA1, IGF1/IGFBP3/ALS, and LTA.
    Palmitoylglycine
  • HY-B0367
    Lornoxicam
    		Inhibitor 99.36%
    Lornoxicam (Chlortenoxicam) is an orally active oxycontin nonsteroidal anti-inflammatory drug (NSAID) with analgesic, anti-inflammatory, antipyretic and anticancer activities. Lornoxicam exhibits good inhibitory effects on both COX-1 and COX-2 (COX-1: IC50=0.005 μM; COX-2:IC50=0.008 μM) and inhibits the production of NO by iNOS (IC50=65 μM) and the proinflammatory cytokine IL-6 (IC50=54 μM). Lornoxicam also inhibits tumor cell proliferation and migration and induces tumor cell apoptosis. Lornoxicam can be used in the study of inflammatory pain, colorectal cancer and breast cancer.
    Lornoxicam
  • HY-Y0148
    10-Hydroxydecanoic acid
    		Inhibitor 98.77%
    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-69019
    7-Nitroindazole
    		Inhibitor 99.04%
    7-Nitroindazole is a selective and BBB-penatrable inhibitor of nitric oxide synthase (NOS). 7-Nitroindazole can inhibit the activity of central NOS with an IC50 of 0.47 μM in the cerebellum of mice. 7-Nitroindazole has anti-injurious and neuroprotective properties.
    7-Nitroindazole
  • HY-N2908
    Atraric acid
    		Inhibitor 99.94%
    Atraric acid (Methyl atrarate) is a specific androgen receptor (AR) antagonist with anti-inflammatory and anticancer effects. Atraric acid represses the expression of the endogenous prostate specific antigen gene in both LNCaP and C4-2 cells. Atraric acid can also inhibit the synthesis of NO and cytokine, and suppress the MAPK-NFκB signaling pathway. Atraric acid can be used to research prostate diseases and inflammatory diseases.
    Atraric acid
  • HY-P1956A
    Human serum albumin (Cell culture grade, Endotoxin<0.125 EU/mg)
    		Inhibitor 99.4%
    Human serum albumin (Cell culture grade, Endotoxin<0.125 EU/mg) (HSA) is the most abundant protein in plasma and is a major determinant of plasma oncotic pressure. Human serum albumin (Cell culture grade, Endotoxin<0.125 EU/mg) exhibits antioxidant, anticoagulant, anti-inflammatory, anti-platelet aggregation activities as well as colloid osmotic action. Human serum albumin (Cell culture grade, Endotoxin<0.125 EU/mg) can block the inhibitory effect of GML on human T cells, providing protective function for T cells. Human serum albumin (Cell culture grade, Endotoxin<0.125 EU/mg) 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, iNOS, and peroxynitrite (ONOO−) in the vascular wall, contributing to the reduction of blood pressure.
    Human serum albumin (Cell culture grade, Endotoxin<0.125 EU/mg)
  • HY-NP135
    Oxidized low density lipoprotein (Human)
    		Inhibitor ≥98.0%
    Oxidized low density lipoprotein (Human) (Human ox-LDL) is involved in atherogenesis. Oxidized low density lipoprotein (Human) induces endothelial dysfunction via cytoplasmic adapter protein TRAF3IP2. Oxidized low density lipoprotein (Human) can stimulate the activation of endothelial cells and the production of adhesion molecules, and inhibits eNOS activity and NO production. Oxidized low density lipoprotein (Human) can activate NLRP3 inflammasome in macrophages.
    Oxidized low density lipoprotein (Human)
  • HY-N7688
    Regaloside B
    		Inhibitor 99.94%
    Regaloside B is a phenylpropanoid isolated from Lilium longiflorum. Regaloside B can inhibit the expression of iNOS and COX-2. Regaloside B has anti-inflammatory activity.
    Regaloside B
  • HY-13683R
    Mifepristone (Standard)
    		Inhibitor 98.49%
    Mifepristone (Standard) is the analytical standard of Mifepristone. This product is intended for research and analytical applications. 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 (Standard)
  • 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-147972
    NF-κB/MAPK-IN-1
    		Inhibitor 98.42%
    NF-κB/MAPK-IN-1 (compound 11a) is a potent inhibitor of NF-κB and MAPK pathway. NF-κB/MAPK-IN-1 shows inhibitory activity against NO production, with an IC50 of 6.96 µM. NF-κB/MAPK-IN-1 suppresses LPS-induced iNOS, COX-2, ERΚ and P38 signaling activation. NF-κB/MAPK-IN-1 can prevent LPS induced inflammatory response in macrophages. NF-κB/MAPK-IN-1 can be used for rheumatoid arthritis (RA) research.
    NF-κB/MAPK-IN-1
  • HY-131697
    FeTPPS
    		Inhibitor ≥99.0%
    FeTPPS, a 5,10,15,20-tetrakis (4-sulfonatophenyl) porphyrin iron III chloride peroxynitrite decomposition catalyst, possesses evident neuroprotective effects in a experimental model of spinal cord damage. FeTPPS acts as a peroxynitrite scavenger and anti-nitrating agent in vivo. FeTPPS reduces nitric oxide (NO) production and apoptosis process.
    FeTPPS
  • HY-159062
    Goji Extract
    		Activator
    Goji Extract is a natural product with anti-aging, antioxidant, and neuroprotective effects. The antioxidant effect of Goji Extract has a positive impact on erectile dysfunction and can be used in research to improve erectile function.
    Goji Extract
  • 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
Cat. No. Product Name / Synonyms Application Reactivity
NO Synthase Isoform Comparison

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