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-101238
    Agmatine sulfate
    Inhibitor ≥98.0%
    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
  • HY-B1142
    Lipoamide
    99.58%
    Lipoamide ((±)-α-Lipoamide) is a monocarboxylic acid derivative of a neutral amide, formed by the condensation of the carboxyl group of lipoic acid and ammonia. Lipoamide protects against oxidative stress-mediated neuronal cell damage and also acts as a coenzyme to transfer acetyl groups and hydrogen during pyruvate deacylation. Lipoamide also stimulates mitochondrial biogenesis in adipocytes through the endothelial NO synthase-cGMP-protein kinase G signaling pathway.
    Lipoamide
  • HY-17003
    Saquinavir mesylate
    Inhibitor 99.84%
    Saquinavir (Ro 31-8959) mesylate is an orally active HIV protease inhibitor that can be used in the research of AIDS. Saquinavir mesylate also has anti-inflammatory activity and can induce apoptosis of human red blood cells.
    Saquinavir mesylate
  • HY-N0455AS8
    L-Arginine-13C6,15N4 hydrochloride
    Activator 99.30%
    L-Arginine-13C6,15N4 (hydrochloride) is the 13C- 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>13</sup>C<sub>6</sub>,<sup>15</sup>N<sub>4</sub> hydrochloride
  • HY-N0396
    Harpagoside
    Inhibitor 99.88%
    Harpagoside can be obtained by Harpagophytum procumbens, which has anti-inflammatory, anti-cancer, protective activity, and efficacy. Harpagoside has an inhibitory effect on COX-1 and COX-2 active, and suppresses NO production. Harpagoside inhibits HepG2 cell lipid polysaccharide, which is a protein that is expressed horizontally and selectively, and has anti-inflammatory and latent pain effects. Harpagoside has the ability to protect the body, and has a degenerative effect on the β-oxidation (Aβ).
    Harpagoside
  • HY-102015
    6-Biopterin
    99.04%
    6-Biopterin (L-Biopterin), a pterin derivative, is a NO synthase cofactor.
    6-Biopterin
  • HY-B1409
    Isosorbide dinitrate
    Activator 99.89%
    Isosorbide dinitrate (ISDN) is an NO donor that prevents LV remodeling and degradation of cardiac function following myocardial infarction (MI).
    Isosorbide dinitrate
  • HY-N0591
    Dehydrocostus Lactone
    Inhibitor 99.97%
    Dehydrocostus Lactone ((-)-Dehydrocostus lactone) is a natural sesquiterpene that can be isolated from Saussurea lappa. Dehydrocostus Lactone has multiple activities such as anti-inflammatory, antibacterial, anti-tumor, and immunomodulatory effects. Dehydrocostus Lactone has an MIC of 2 µg/mL against Mycobacterium tuberculosis. Dehydrocostus Lactone can also inhibit the killing activity of cytotoxic T lymphocytes and induce apoptosis in tumor cells.
    Dehydrocostus Lactone
  • HY-B0679
    Lubiprostone
    Inhibitor ≥98.0%
    Lubiprostone (SPI-0211) increases intestinal fluid secretion through generation of CIC-2/CFTR and activation of cAMP signaling pathway. Lubiprostone inhibits myeloperoxidase (MPO) activity, downregulates Indomethacin (HY-14397)-induced iNOS and TNFα expression. Lubiprostone can be used for chronic constipation research.
    Lubiprostone
  • HY-N0635
    Prim-O-glucosylcimifugin
    Inhibitor 99.94%
    Prim-O-glucosylcimifugin exerts anti-inflammatory effects through the inhibition of iNOS and COX-2 expression by through regulating JAK2/STAT3 signaling.
    Prim-O-glucosylcimifugin
  • HY-D0145
    7-Ethoxyresorufin
    Inhibitor 99.61%
    7-Ethoxyresorufin (Resorufin ethyl ether) is a fluorometric substrate and competitive inhibitor of cytochrome P450, especially CYP1A1. 7-Ethoxyresorufin also inhibits NO synthase.
    7-Ethoxyresorufin
  • HY-N6607
    Tryptanthrin
    Inhibitor 99.89%
    Tryptanthrin is an indole quinazoline that could be an alkaloid from indigo-bearing plants. Tryptanthrin is a potent and orally active cellular Leukotriene (LT) biosynthesis inhibitor. Tryptanthrin has anticancer activity. Tryptanthrin suppresses the expression levels of NOS1, COX-2, and NF-κB and regulates the expression levels of IL-2, IL-10, and TNF-α.
    Tryptanthrin
  • HY-N0217
    Benzoylaconine
    Inhibitor 99.92%
    Benzoylaconine (Benzoylaconitine) is an orally active monoester alkaloid found in the traditional Chinese medicine Aconitum carmichaelii. Benzoylaconine is an ACE2 agonist (EC50: 1.5 μM) with antihypertensive and anti-heart failure effects. Benzoylaconine inhibits TLR-induced MAPK and NF-κB pathways to exert anti-inflammatory effects. Benzoylaconine upregulates the protein levels of P-gp, MRP2, and has anti-tumor effects.
    Benzoylaconine
  • HY-N3007
    Naringenin chalcone
    Inhibitor 99.29%
    Naringenin chalcone is an orally active intermediate in flavonol biosynthesis. Naringenin chalcone induces Apoptosis. Naringenin chalcone inhibits the production of MCP-1 and NO. Naringenin chalcone exhibits anticancer activity against glioblastoma. Naringenin chalcone has anti-inflammatory and anti-allergic properties.
    Naringenin chalcone
  • HY-N6602
    α-Solanine
    Inhibitor 99.89%
    α-solanine, a bioactive component and one of the major steroidal glycoalkaloids in Solanum nigrum, has been observed to inhibit growth and induce apoptosis in cancer cells.
    α-Solanine
  • 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-79457
    S-Methylisothiourea sulfate
    Inhibitor 99.94%
    S-Methylisothiourea sulfate is a potent, selective and competitive inhibitor of inducible nitric oxide synthase (iNOS). S-Methylisothiourea sulfate exerts beneficial effects in rodent models of septic shock.
    S-Methylisothiourea sulfate
  • HY-P0117
    Tat-NR2B9c
    Inhibitor 99.97%
    Tat-NR2B9c (Tat-NR2Bct; NA-1) 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 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 also inhibits neuronal nitric oxide synthase (nNOS)/PSD-95 interaction, and possesses neuroprotective efficacy.
    Tat-NR2B9c
  • HY-N0455AS6
    L-Arginine-13C6 hydrochloride
    Activator 99.00%
    L-Arginine-13C6 (hydrochloride) is the 13C-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>13</sup>C<sub>6</sub> hydrochloride
  • HY-N1382
    Asperuloside
    Inhibitor 99.69%
    Asperuloside is an iridoid isolated from Hedyotis diffusa, with anti-inflammatory activity. Asperuloside inhibits inducible nitric oxide synthase (iNOS), suppresses NF-κB and MAPK signaling pathways.
    Asperuloside
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