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-N2237R
    Piceatannol 3'-O-glucoside (Standard)
    		Activator
    Piceatannol 3'-O-glucoside (Standard) is the analytical standard of Piceatannol 3'-O-glucoside. This product is intended for research and analytical applications. Piceatannol 3'-O-glucoside, an active component of Rhubarb, activates endothelial nitric oxide (NO) synthase through inhibition of arginase activity with IC50s of 11.22 μM and 11.06 μM against arginase I and arginase II, respectively.
    Piceatannol 3'-O-glucoside (Standard)
  • HY-N1330
    Rubranol
    		Inhibitor
    Rubranol is an inhibitor of NO Synthase. Rubranol inhibits LPS-induced NO production in activated macrophages with 74% inhibition.
    Rubranol
  • HY-N9086A
    (rac)-Poriol
    		Ligand
    (rac)-Poriol (5,7,4'-Trihydroxy-6-methylflavanone) exhibits antioxidant activity, and scavenges free radical DPPH with an IC50 of 0.18 µg/mL. (rac)-Poriol inhibits the LPS (HY-D1056)-induced NO generation in RAW264.7 (98.35% inhibition rate at 10 μM), and exhibits anti-inflammatory activity. (rac)-Poriol exhibits good binding affinity with iNOS, COX-1, COX-2, TNF-α, and IL-1β.
    (rac)-Poriol
  • HY-N0761AR
    trans-Isoferulic acid (Standard)
    		Inhibitor
    trans-Isoferulic acid (Standard) is the analytical standard of trans-Isoferulic acid. This product is intended for research and analytical applications. trans-Isoferulic acid (trans-3-Hydroxy-4-methoxycinnamic acid) is an aromatic acid isolated from the roots of Clematis florida var. plena. trans-Isoferulic acid exhibits anti-inflammatory activity.trans-isoferulic acid suppresses NO and PGE2 production through the induction of Nrf2-dependent heme oxygenase-1 (HO-1).
    trans-Isoferulic acid (Standard)
  • HY-141411B
    (R)-Zevaquenabant
    		Antagonist
    (R)-Zevaquenabant ((R)-MRI-1867) is the enantiomer of Zevaquenabant (HY-141411A). Zevaquenabant ((S)-MRI-1867) is a peripherally restricted, orally bioavailable dual cannabinoid CB1 receptor and inducible NOS antagonist. Zevaquenabant ameliorates obesity-induced chronic kidney disease (CKD).
    (R)-Zevaquenabant
  • HY-N6968R
    α-Humulene (Standard)
    		Inhibitor
    α-Humulene (Standard) is the analytical standard of α-Humulene. This product is intended for research and analytical applications. 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 (Standard)
  • HY-N13706
    3β,15α-Dihydroxy-7,11,23-trioxo-lanost-8-dien-26-oic acid
    		Inhibitor
    3β,15α-Dihydroxy-7,11,23-trioxo-lanost-8-dien-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 6.50 μM, making it a potential candidate for anti-inflammatory research.
    3β,15α-Dihydroxy-7,11,23-trioxo-lanost-8-dien-26-oic acid
  • HY-N15272
    Artocarpesin
    		Inhibitor
    Artocarpesin is a flavonoid compound. Artocarpesin has inhibitory effects on methicillin-resistant Staphylococcus aureus (MRSA). Artocarpesin inhibits the production of NO, PGE2 and ROS by inhibiting COX-2 and iNOS expression, and plays an anti-inflammatory role. In addition, Artocarpesin inhibits platelet aggregation by inhibiting cyclic nucleotides and MAPKs, which can be used in the study of cardiovascular diseases.
    Artocarpesin
  • HY-101410A
    SDMA (p-hydroxyazobenzene-p′-sulfonate)
    		Inhibitor
    SDMA p-hydroxyazobenzene-p′-sulfonate is the p-hydroxyazobenzene-p′-sulfonate salt form of SDMA (HY-101410). SDMA p-hydroxyazobenzene-p′-sulfonate is an endogenous inhibitor of nitric oxide synthase (NO synthase) activity. SDMA p-hydroxyazobenzene-p′-sulfonate is an activator for NF-κB, and promotes the expression of IL-6 and TNF-α. SDMA p-hydroxyazobenzene-p′-sulfonate is stable in serum and plasma, and can be used as a kidney biomarker of hepatic and renal dysfunction.
    SDMA (p-hydroxyazobenzene-p′-sulfonate)
  • HY-133198
    Valeriandoid B
    		Inhibitor
    Valeriandoid B is a Iridoids product that can be isolated from the herbs of Valeriana jatamansi.
    Valeriandoid B
  • HY-N0577R
    Apiin (Standard)
    		Inhibitor
    Apiin (Standard) is the analytical standard of Apiin. This product is intended for research and analytical applications. Apiin, a major constituent of Apium graveolens leaves with anti-inflammatory properties. Apiin shows significant inhibitory activity on nitrite (NO) production (IC50 = 0.08 mg/mL) in-vitro and iNOS expression (IC50 = 0.049 mg/ mL) in LPS-activated J774.A1 cells.
    Apiin (Standard)
  • HY-N12317
    Multiflorin B
    Multiflorin B (compound 5) is a kind of kaempferol glycoside. Multiflorin B can be isolated from the root of the fern Neocheiropteris palmatopedata. Multiflorin B inhibits nitric oxide production at a concentration of 20 μg/ml with an inhibition of 52%.
    Multiflorin B
  • HY-155224
    Sulpho NONOate
    		Control
    Sulpho NONOate (Sulfi/NO) does not produce NO at physiological pH. Sulpho NONOate can be used in the experiments about other NO-donor regents as a negative control.
    Sulpho NONOate
  • HY-N0455AS9
    L-Arginine-15N4,d7 hydrochloride
    		Activator
    L-Arginine-15N4,d7 (hydrochloride) is the deuterium and 15N-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-<sup>15</sup>N<sub>4</sub>,d<sub>7</sub> hydrochloride
  • HY-W003969R
    Aminopicoline (Standard)
    		Inhibitor
    Aminopicoline (Standard) is the analytical standard of Aminopicoline. This product is intended for research and analytical applications. Aminopicoline (Ascensil) is a potent and nonselective inhibitor of NO synthase (NOS) isoenzymes (iNOS, nNOS, eNOS).
    Aminopicoline (Standard)
  • HY-107969R
    Haloperidol decanoate (Standard)
    Haloperidol decanoate (Standard) is the analytical standard of Haloperidol decanoate. This product is intended for research and analytical applications. Haloperidol decanoate is a depot preparation of haloperidol, a commonly used butyrophenone derivative with antipsychotic activity. Haloperidol decanoate can increase the striatal D2 receptor in rat. Haloperidol decanoate can improve conditions of psychoses (mainly schizophrenia). Haloperidol decanoate can lead to increased accumulation of the dopamine metabolites homo-vanillic acid. Haloperidol decanoate can reduce intestinal transport, increase gastric emptying and reduce acid output in rat model.
    Haloperidol decanoate (Standard)
  • HY-N0268R
    Irisflorentin (Standard)
    		Inhibitor
    Irisflorentin (Standard) is the analytical standard of Irisflorentin. This product is intended for research and analytical applications. Irisflorentin, a naturally occurring isoflavone, is an abundant active constituent in Belamcanda chinensis. Irisflorentin markedly reduces the transcriptional and translational levels of inducible nitric oxide synthase (iNOS) as well as the production of NO. Anti-inflammatory activity.
    Irisflorentin (Standard)
  • HY-18732C
    L-NMMA hydrochloride
    		Antagonist
    L-NMMA (Tilarginine) hydrochloride competitively antagonizes L-arginine, and thus inhibits production of nitric oxide (NO). L-NMMA hydrochloride is utilized as NO synthase antagonist in experimental settings.
    L-NMMA hydrochloride
  • HY-131898R
    PTIO (Standard)
    		Inhibitor
    PTIO (Standard) is the analytical standard of PTIO. This product is intended for research and analytical applications. 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 (Standard)
  • HY-18731R
    1400W Dihydrochloride (Standard)
    		Inhibitor
    1400W (Dihydrochloride) (Standard) is the analytical standard of 1400W (Dihydrochloride). This product is intended for research and analytical applications. 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 (Standard)
Cat. No. Product Name / Synonyms Application Reactivity
NO Synthase Isoform Comparison

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