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-118060
    Dipeptide 2
    Activator 98.12%
    Dipeptide 2 (N-Valyltryptophan) is an orally active, competitive angiotensin-converting enzyme (ACE) inhibitory peptide with an IC50 of 10.50 μM. Dipeptide 2 reduces intracellular Calcium ions. Dipeptide 2 significantly increases the content of NO, inhibits the production of ET-1, and induces the phosphorylation of eNOS. Dipeptide 2 decreases the systolic and diastolic blood pressure of spontaneously hypertensive rats.
    Dipeptide 2
  • HY-N7976
    Quercetin 3-O-neohesperidoside
    Inhibitor 99.79%
    Quercetin 3-O-neohesperidoside is a flavonol diglycoside with NO production inhibitory activity and anti-inflammatory activity. Quercetin 3-O-neohesperidoside targets activated macrophages to block NO production, with an IC50 of 55 μM. Quercetin 3-O-neohesperidoside can be used in the research of inflammatory diseases.
    Quercetin 3-O-neohesperidoside
  • 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-116474
    Viridicatol
    Inhibitor 99.93%
    Viridicatol is a quinolone alkaloid with anti-inflammatory, antibacterial, antifungal, osteogenic and chondrogenic activities. Viridicatol reduces the phosphorylation levels of ERK, JNK, p38 and STAT6; inhibits MMP-2, MMP-9, NF-κB signaling pathway and PTP1B; downregulates genes related to mast cell activation; and binds to SHN3 to activate the Wnt/SHN3 signaling pathway. Viridicatol inhibits the expression of pro-inflammatory mediators and cytokines, and promotes osteogenic/chondrogenic differentiation. Viridicatol can be used in studies related to fibrosarcoma, allergy, bacterial infection, fungal infection and osteoporosis.
    Viridicatol
  • HY-N6029
    Dehydroevodiamine hydrochloride
    99.80%
    Dehydroevodiamine hydrochloride is isolated from the leaves of Evodia rutaecarpa.
    Dehydroevodiamine hydrochloride
  • HY-N1401
    20(R)-Ginsenoside Rh2
    Inhibitor 99.84%
    20(R)-Ginsenoside Rh2 is an orally active protopanaxadiol-type saponin with multiple biological activities. 20(R)-Ginsenoside Rh2 exerts a significant inhibitory effect on non-small cell lung cancer and liver cancer by inducing cell cycle arrest and promoting apoptosis. 20(R)-Ginsenoside Rh2 exerts anti-γ-herpesvirus effects by inhibiting viral DNA replication. 20(R)-Ginsenoside Rh2 inhibits inflammatory mediators by reducing the levels of NO, PGE2, and ROS; it can delay skin photoaging by reducing ROS and inhibiting MMP-9/2 activity. 20(R)-Ginsenoside Rh2 accelerates the recovery after muscle injury by activating the Akt1/PKB signaling pathway. 20(R)-Ginsenoside Rh2 can inhibit osteoclast formation and exert an anti-osteoporosis effect.
    20(R)-Ginsenoside Rh2
  • HY-U00432A
    S-MTC dihydrochloride
    Inhibitor 99.00%
    S-MTC (S-Methyl-L-thiocitrulline) dihydrochloride is a selective type I nitric oxide synthase (NOS) inhibitor.
    S-MTC dihydrochloride
  • HY-P0117A
    Tat-NR2B9c TFA
    Inhibitor 99.66%
    Tat-NR2B9c TFA (Tat-NR2Bct TFA) is a postsynaptic density-95 (PSD-95) inhibitor, with EC50 values of 6.7 nM and 670 nM for PSD-95d2 (PSD-95 PDZ domain 2) and PSD-95d1, respectively. Tat-NR2B9c TFA disrupts the PSD-95/NMDAR interaction, inhibiting NR2A and NR2B binding to PSD-95 with IC50 values of 0.5 μM and 8 μM, respectively. Tat-NR2B9c TFA also inhibits neuronal nitric oxide synthase (nNOS)/PSD-95 interaction, and possesses neuroprotective efficacy.
    Tat-NR2B9c TFA
  • HY-N1198
    Strictosamide
    Inhibitor 99.94%
    Strictosamide is a compound that can be isolated from Nauclea officinalis. Strictosamide has various activities such as anti-inflammatory, analgesic, anti-Plasmodium, antifungal, and promoting wound healing.
    Strictosamide
  • HY-12383
    Pelubiprofen
    Inhibitor 98.46%
    Pelubiprofen is an orally active anti-inflammatory agent that inhibits COX enzyme activity (with IC50 values of 10.66 and 2.88 μM for COX-1 and COX-2, respectively). Pelubiprofen has significant anti-inflammatory and analgesic effects.
    Pelubiprofen
  • HY-W011849
    Phenyl β-D-glucopyranoside
    Inhibitor 99.85%
    Phenyl β-D-glucopyranoside is a component isolated from Phellodendron amurense, which has anti-inflammatory and anti-tumor activities. Phenyl β-D-glucopyranoside inhibits nitric oxide (NO) production, and the expression of iNOS and COX-2. Phenyl β-D-glucopyranoside also inhibits the nuclear translocation of NF-κB. Phenyl β-D-glucopyranoside inhibits the expression of pro-inflammatory cytokines and related genes.
    Phenyl β-D-glucopyranoside
  • HY-101175
    3-Bromo-7-nitroindazole
    Inhibitor 99.78%
    3-Bromo-7-nitroindazole is a potent and selective inhibitor of neuronal nitric oxide synthase (nNOS). 3-Bromo-7-nitroindazole affects the intercellular messenger nitric oxide (NO) synthesis throughout the body and brain. 3-Bromo-7-nitroindazole can be used for the researches of metabolic and neurological disease, such as diabetes, stroke and depression.
    3-Bromo-7-nitroindazole
  • HY-W003969
    Aminopicoline
    Inhibitor 99.99%
    Aminopicoline (Ascensil) is a potent and non-selective inhibitor of nitric oxide synthase (NOS) isoenzymes (iNOS, nNOS, eNOS). Aminopicoline competes with arginine at the substrate-binding site of nitric oxide synthase, reduces cellular nitric oxide production, inhibits the elevation of plasma nitrate, increases mean arterial pressure at high doses, and also serves as a basis for radiolabeled ligands to localize nitric oxide synthase binding sites. Aminopicoline can be used in the research of diseases associated with septic shock, joint inflammation, intestinal inflammation, and CNS inflammation.
    Aminopicoline
  • HY-N2736
    3′,4′,7-Trihydroxyflavone
    Inhibitor 99.04%
    3′,4′,7-Trihydroxyflavone is an orally active inhibitor of OXA-48 (IC50 = 1.89 μM) and COX-1 (IC50 = 36.37 μM). 3′,4′,7-Trihydroxyflavone exhibits antioxidant and anti-inflammatory properties, inhibiting the release of inflammatory cytokines such as IL-6, IL-8, and TNF-α. 3′,4′,7-Trihydroxyflavone inhibits H2O2-induced neuronal apoptosis and ROS accumulation, and exerts anti-neuroinflammatory effects by suppressing the JNK-STAT1 pathway. 3′,4′,7-Trihydroxyflavone exhibits antimicrobial and antibiotic-modifying activities against multidrug-resistant Gram-negative enteric bacteria. 3′,4′,7-Trihydroxyflavone inhibits RANKL-induced osteoclast formation via NFATc1. 3′,4′,7-Trihydroxyflavone activates the CREB-BDNF axis and restores scopolamine (HY-N0296)-induced memory deficits in mice.
    3′,4′,7-Trihydroxyflavone
  • HY-B1773AS3
    Sodium propionate-13C3
    Inhibitor 99.45%
    Sodium propionate-13C-3 is the 13C-labeled Propionate sodium (HY-B1773A). 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-<sup>13</sup>C<sub>3</sub>
  • HY-N2300
    Kuwanon A
    Inhibitor 99.69%
    Kuwanon A is a flavone derivative isolated from the root barks of the mulberry tree (Morus alba L.); inhibits nitric oxide production with an IC50 of 10.5 μM.
    Kuwanon A
  • HY-NP192
    Sericin
    Inhibitor
    Sericin is an orally active globular protein produced by silkworm cocoons. Sericin inhibits the expression of COX2, iNOS, TLR4, MAPK and NF-κB; reduces the levels of IL-18, IL-1 and CCL2; antagonizes the activity of AChE; and downregulates the expression of Bcl-2. Sericin enhances the PI3K/AKT-mediated insulin signaling pathway. Sericin inhibits the activity of tyrosinase (Tyrosinase), scavenges ROS, chelates metal ions, and increases the levels of antioxidant enzymes. Sericin induces apoptosis and arrests the cell cycle. Sericin exhibits antibacterial, moisturizing, cardioprotective and anticoagulant properties. Sericin can be used in research related to type 2 diabetes, hyperlipidemia, obesity, Alzheimer's disease, colon cancer, peripheral nerve injury and ischemic myocardial infarction.
    Sericin
  • HY-107586
    Demethylasterriquinone B1
    Activator 98.10%
    Demethylasterriquinone B1 (DAQ B1; L-783281) is an orally active insulin receptor (insulin receptor) agonist and AKT activator. By activating AKT, Demethylasterriquinone B1 upregulates the expression and activity of eNOS to increase NO production, while downregulating the expression of the NADPH oxidase subunit p22phox to reduce oxidative stress and improve vascular endothelial dysfunction in hypertensive rats. Demethylasterriquinone B1 combind with an AKT inhibitor targets the insulin signaling pathway to activate two antiviral pathways, RNA interference and JAK/STAT, in mosquitoes, thereby reducing Zika virus infection.
    Demethylasterriquinone B1
  • HY-102062A
    Nω-Propyl-L-arginine hydrochloride
    Inhibitor 99.88%
    Nω-Propyl-L-arginine (N-omega-Propyl-L-arginine) hydrochloride is a potent, competitive, and highly selective inhibitor of neuronal nitric oxide synthase (nNOS), with a Ki of 57 nM. Nω-Propyl-L-arginine hydrochloride displays a 149-fold selectivity for nNOS over endothelial NOS (eNOS).
    Nω-Propyl-L-arginine hydrochloride
  • HY-N0385
    Gomisin J
    Activator 99.97%
    Gomisin J is a Schisandra chinensis-derived lignan that can inhibit multiple targets such as eNOS, AMPK (LKB1, CaMKIIβ), fetuin-A, NF-κB, Nrf2/HO-1, and can pass through the blood-brain barrier. Gomisin J increases NO bioavailability by activating eNOS, regulates lipid metabolism by activating the AMPK pathway, inhibits fetuin-A and NF-κB to exert anti-inflammatory effects, and activates Nrf2/HO-1 to enhance antioxidant capacity. Gomisin J has the activities of anti-hypertension, regulating liver lipid metabolism, and reducing cerebral ischemia-reperfusion injury, and can be used for research on hypertension, non-alcoholic fatty liver disease, cerebral ischemia-reperfusion injury, etc.
    Gomisin J
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