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-W007524R
    2-Aminoquinoline (Standard)
    2-Aminoquinoline (2-Quinolinamine) is a promising compound as bioavailable nNOS inhibitor but suffers from low human nNOS inhibition, low selectivity versus human eNOS, and significant binding to other CNS targets. 2-Aminoquinoline exhibits antiviral activity against the vaccinia virus. 2-Aminoquinoline has the potential for the research of antineurodegenerative agents.
    2-Aminoquinoline (Standard)
  • HY-151241
    Sinomenine N-oxide
    		Inhibitor ≥99.0%
    Sinomenine N-oxide has anti-angiogenic, anti-inflammatory and anti-rheumatic effects. Sinomenine N-oxide is also a NO production inhibitor, with an IC50 value of 23.04 μM.
    Sinomenine N-oxide
  • HY-120221
    SE 175
    		Inducer
    SE 175 is an organic nitrate compound that acts as an NO donor in vivo following reductive transformation of the nitrate group to nitric oxide. SE 175 stimulates endothelial soluble guanylate cyclase and induces aortic vasorelaxation with an EC50 of 0.20 µM.
    SE 175
  • HY-N12494
    Diplacol
    		Inhibitor
    Diplacol is a geranylated flavanone that can be isolated from paulownia trees (Paulownia coreana UYEKI). Diplacol has anti-inflammatory activity. Diplacol inhibits NO production in LPS-stimulated Raw264.7 cells with an IC50 value of 4.53 μM.
    Diplacol
  • HY-107632G
    GYY4137 (GMP)
    		Inhibitor
    GYY4137 (GMP) is the GMP-grade version of GYY4137 (HY-107632). Small molecules of GMP grade can be used as adjuvant reagents in cell therapy. GYY4137 (GMP) is a sustained-release H2S donor possessing vasodilatory, antihypertensive, and anti-inflammatory activities. GYY4137 (GMP) can inhibit cell growth, induce apoptosis, and cause cell cycle arrest by blocking the STAT3 pathway, demonstrating potent anticancer activity.
    GYY4137 (GMP)
  • HY-N15571
    Hedopeptolide
    		Inhibitor
    Hedopeptolide can be found in the marine cyanobacteria Okeania sp. Hedopeptolide inhibits LSP-induced NO production in RAW264.7 cells (IC50: 4 μM). Hedopeptolide exhibits anti-inflammatory activity.
    Hedopeptolide
  • HY-115889
    L-NAPNA
    		Inhibitor
    L-NAPNA is a nitric oxide synthase (NOS) inhibitor with an IC50 of 1.4 μM. L-NAPNA exhibits analgesic effects by inhibiting formalin-induced paw licking behavior in mice (ED50 of 57.2 mg/kg) and suppressing acetic acid-induced abdominal writhing in mice (ED50 of 25 mg/kg). L-NAPNA can be used in research related to central nervous system diseases.
    L-NAPNA
  • HY-102062R
    Nω-Propyl-L-arginine (Standard)
    		Inhibitor
    Nω-Propyl-L-arginine (Standard) is the analytical standard of Nω-Propyl-L-arginine (HY-102062). This product is intended for research and analytical applications. Nω-Propyl-L-arginine (N-omega-Propyl-L-arginine) is a potent, competitive, and highly selective inhibitor of neuronal nitric oxide synthase (nNOS), with a Ki of 57 nM. Nω-Propyl-L-arginine displays a 149-fold selectivity for nNOS over endothelial NOS (eNOS).
    Nω-Propyl-L-arginine (Standard)
  • HY-Y0078S
    Cinnamyl Alcohol-d5
    		Inhibitor
    Cinnamyl Alcohol-d5 is deuterated labeled Cinnamyl Alcohole (HY-Y0045). Cinnamyl Alcohol is an active component from chestnut flower, inhibits increased PPARγ expression, exhibits anti-obesity, antioxidant and anti-inflammatory activities.
    Cinnamyl Alcohol-d<sub>5</sub>
  • HY-177406
    VR11 aptamer
    		Inhibitor
    VR11 aptamer is a DNA-based TNF-α inhibitor with a KD of 7.0 nM. VR11 aptamer prevents TNFα-induced apoptosis and NO production. VR11 aptamer has non-immunogenicity and does not raise immune responses when injected intraperitoneally into C57BL/6 mice model. VR11 aptamer can be used for inflammatory diseases research.
    VR11 aptamer
  • HY-130325
    α-Guanidinoglutaric acid
    		Inhibitor 98%
    α-Guanidinoglutaric acid is a guanidino compound first found in cobaltinduced epileptogenic focus tissue in the cerebral cortex of cats. α-Guanidinoglutaric acid induces epileptic seizures in rats after intraventricular administration.
    α-Guanidinoglutaric acid
  • HY-N2518R
    Agnuside (Standard)
    		Inhibitor
    Agnuside (Standard) is the analytical standard of Agnuside. This product is intended for research and analytical applications. Agnuside is used in the study of asthma, inflammation, and angiogenic diseases. Agnuside is an orally active compound that can be extracted from Vitex negundo.
    Agnuside (Standard)
  • HY-N13701
    3β,7β,15α-Trihydroxy-4-(hydroxymethyl)-11,23-dioxo-lanost-8-en-26-oic acid
    		Inhibitor
    3β,7β,15α-Trihydroxy-4-(hydroxymethyl)-11,23-dioxo-lanost-8-en-26-oic acid is a triterpene compound that can be found in Ganoderma lucidum, and it inhibits nitric oxide (NO) production in BV-2 microglial cells induced by lipopolysaccharide (LPS, HY-D1056), with an IC50 of 4.15 μM.
    3β,7β,15α-Trihydroxy-4-(hydroxymethyl)-11,23-dioxo-lanost-8-en-26-oic acid
  • HY-N6029R
    Dehydroevodiamine hydrochloride (Standard)
    Dehydroevodiamine hydrochloride is isolated from the leaves of Evodia rutaecarpa.
    Dehydroevodiamine hydrochloride (Standard)
  • HY-N0631R
    Cornuside (Standard)
    		Inhibitor
    Cornuside (Standard) is the analytical standard of Cornuside (HY-N0631). This product is intended for research and analytical applications. Cornuside is an iridoid glycoside with anti-allergic, anti-inflammatory, and neuroprotective activities. Cornuside exerts anti-allergic activity by downregulating the p38 MAPK, JNK, and NF-κB signaling pathways, and inhibits IgE-mediated histamine release from mast cells. Cornuside improves cognitive impairment in mice by inhibiting BACE1 activity (IC50 = 55.84 μg/mL) and enhancing ChAT activity. Cornuside inhibits LPS (HY-D1056)-induced inflammatory mediators, including iNOS, COX-2, PGE2, TNF-α, IL-6, and IL-1β, by suppressing NF-κB activation.
    Cornuside (Standard)
  • HY-B0531R
    Triflusal (Standard)
    		Modulator
    Triflusal (Standard) is the analytical standard of Triflusal (HY-B0531). This product is intended for research and analytical applications. Triflusal is an orally bioavailable, blood-brain barrier-permeable dual Cyclooxygenase-1 (COX-1)/cAMP phosphodiesterase inhibitor. Triflusal inhibits platelet aggregation, NF-κB activation, iNOS activity, and prostaglandin synthesis in ischaemic tissue. Triflusal stimulates neutrophil nitric oxide production, eNOS protein expression, and cNOS activity. Triflusal alleviates cerebral ischemic injury in rats and ameliorates pathological lesions and related gene expression in transgenic Alzheimer’s disease models. Triflusal can be used for the research of thromboembolic/ischemic cardiovascular and cerebrovascular diseases, and Alzheimer’s disease.
    Triflusal (Standard)
  • HY-B1581AR
    L-Canavanine sulfate (Standard)
    		Inhibitor
    L-Canavanine (sulfate) (Standard) is the analytical standard of L-Canavanine (sulfate). This product is intended for research and analytical applications. L-Canavanine sulfate is a selective inhibitor of inducible NO synthase.
    L-Canavanine sulfate (Standard)
  • HY-107690R
    DMPO (Standard)
    		Activator
    DMPO (Standard) is the analytical standard of DMPO. This product is intended for research and analytical applications. DMPO is a cell permeable hydrophillic spin trap agent for superoxide detection.
    DMPO (Standard)
  • HY-N10133
    Licoflavanone
    		Inhibitor
    Licoflavanone (3′-Prenylnaringenin) is a flavanone with antioxidant, anti-inflammatory and anticancer activities. Licoflavanone can be isolated from the leaf extract of Glycyrrhiza glabra. Licoflavanone downregulates the mTOR/PI3K/AKT signaling pathway to inhibit the proliferation, migration and invasion of cancer cells, while activates Bax, Bad and multiple caspase enzymes to induce apoptosis. Its anti-inflammatory effect is manifested by reducing the nuclear translocation of NF-κB, decreasing the phosphorylation levels of p38, JNK and ERK1/2, thereby inhibiting the expression of nitric oxide, proinflammatory cytokines, COX-2 and iNOS. Licoflavanone is used in studies on nasopharyngeal carcinoma and related mechanisms.
    Licoflavanone
  • HY-W095499
    Corydaldine
    		Inhibitor 98.20%
    Corydaldine is a alkaloid. Corydaldine inhibits the production of NO in the BV2 cell line when stimulated by LPS.[1]
    Corydaldine
Cat. No. Product Name / Synonyms Application Reactivity
NO Synthase Isoform Comparison

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