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-14536A
    Methylene blue (purity≥70%)
    Inhibitor
    Methylene blue (purity≥70%) is a guanylyl cyclase (sGC), monoamine oxidase A (MAO-A) and NO synthase (NOS) inhibitor. Methylene blue (purity≥70%) is a vasopressor and is often used as a dye in several medical procedures. Methylene blue (purity≥70%) through the nitric oxide syntase/guanylate cyclase signalling pathway to reduce prepulse inhibition. Methylene blue (purity≥70%) is a REDOX cycling compound and able to cross the blood-brain barrier. Methylene blue (purity≥70%) is a Tau aggregation inhibitor. Methylene blue reduces cerebral edema, attenuated microglial activation and reduced neuroinflammation.
    Methylene blue (purity≥70%)
  • HY-169402
    PDE1-IN-9
    Inhibitor
    PDE1-IN-9 (Compound 7a) is a selective inhibitor for phosphodiesterase 1 (PDE1), that inhibits PDE1C with an IC50 of 11 nM. PDE1-IN-9 reduces mRNA expression of IL-1β, IL-6, TNF-α and iNOS, inhibits the production of nitric oxide (NO) and reactive oxygen species (ROS). PDE1-IN-9 exhibits good metabolic stability in rat liver microsomes.
    PDE1-IN-9
  • HY-101316
    TRIM
    Inhibitor 99.90%
    TRIM is a potent nitric oxide synthase inhibitor. TRIM inhibits mouse cerebellar nNOS and rat lung iNOS in vitro with IC50 values of 28.2 and 27.0 µM, respectively. Antidepressant- and anxiolytic-like effects.
    TRIM
  • HY-P2307
    Tat-NR2Baa
    Tat-NR2BAA is the control peptide of Tat-NR2B9c (HY-P0117), inactive. The sequence of Tat-NR2BAA is similar to Tat-NR2B9c, but it has a double-point mutation in the COOH terminal tSXV motif, making it incapable of binding PSD-95. Tat-NR2B9c is a membrane-permeant peptide and disrupts PSD-95/NMDAR binding, correlate with uncoupling NR2B- and/or NR2A-type NMDARs from PSD-95.
    Tat-NR2Baa
  • HY-12383
    Pelubiprofen
    Inhibitor 99.27%
    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-W005963
    Methyl 5-hydroxypyridine-2-carboxylate
    Inhibitor 99.97%
    Methyl 5-hydroxypyridine-2-carboxylate is a phenolic acid that can found in the stems of Mahonia fortune. Methyl 5-hydroxypyridine-2-carboxylate exhibits NO inhibitory effects in vitro.
    Methyl 5-hydroxypyridine-2-carboxylate
  • HY-130579
    Vinyl-L-NIO hydrochloride
    Inhibitor
    Vinyl-L-NIO hydrochloride is a potent nitric oxide synthase (NOS) inhibitor. Vinyl-L-NIO hydrochloride inhibits the activity of NOS, reducing the production of nitric oxide.
    Vinyl-L-NIO hydrochloride
  • HY-115411A
    L-Hydroxy arginine dihydrochloride
    Substrate 99.27%
    L-Hydroxy arginine dihydrochloride is an intermediate in the catabolism of L-arginine, and is a substrate for NO synthase.
    L-Hydroxy arginine dihydrochloride
  • HY-111954
    (+)-Erinacin A
    Inhibitor 99.97%
    (+)-Erinacin A (Erinacine A) is a cyanoditerpenoid isolated from Hericium erinaceus with anticancer, anti-inflammatory and neuroprotective activities. (+)-Erinacin A can induce cancer cell death by activating extrinsic and intrinsic apoptosis pathways. (+)-Erinacin A can also inhibit the expression of NO synthase (iNOS) and the production of nitrotyrosine to exert inflammatory and neuroprotective effects, thereby reducing ischemic brain damage.
    (+)-Erinacin A
  • HY-107720
    ARL 17477
    Inhibitor 99.02%
    ARL-17477 is a dual inhibitor of NOS1and the autophagy-lysosomal system with anticancer activity and can inhibit tumor growth in KRAS-mutated cancers.
    ARL 17477
  • HY-N11058
    Damnacanthol
    Inhibitor 99.76%
    Damnacanthol is a natural product that can be isolated from Damnacanthus major. Damnacanthol has anti-15-lipoxygenase activity and can inhibit nitric oxide production in LPS-activated macrophages RAW 264.7 cells.
    Damnacanthol
  • HY-124996
    (Rac)-ZLc-002
    Inhibitor 98.96%
    (Rac)-ZLc-002, an inhibitor of nNOS interaction with nitric oxide synthase 1 adaptor protein (NOS1AP), suppresses inflammatory nociception and chemotherapy-induced neuropathic pain and synergizes with Paclitaxel (HY-B0015) to reduce tumor cell viability.
    (Rac)-ZLc-002
  • HY-135224
    1,4-PBIT dihydrobromide
    Inhibitor ≥98.0%
    1,4-PBIT (1,4-PB-ITU) dihydrobromide (compound 46) is a potent nitric oxide synthases (NOS) inhibitor, with Ki values of 7.6 nM, 360 nM, and 16 nM for the inducible (iNOS), endothelial (eNOS), and neuronal (nNOS) isozymes, respectively.
    1,4-PBIT dihydrobromide
  • HY-N2106
    Dehydroevodiamine
    Inhibitor 99.93%
    Dehydroevodiamine is a major bioactive quinazoline alkaloid isolated from Evodiae Fructus, has an antiarrhythmic effect in guinea-pig ventricular myocytes. Dehydroevodiamine inhibits LPS-induced iNOS, COX-2, prostaglandin E2 (PGE2) and nuclear factor-kappa B (NF-κB) expression in murine macrophage cells.
    Dehydroevodiamine
  • HY-N0278A
    (Rac)-Anemonin
    Inhibitor 98.19%
    (Rac)-Anemonin ((Rac)-Pulsatilla camphor) is the diastereoisomer of Anemonin (HY-N0278). Anemonin (Pulsatilla camphor), a selective iNOS inhibitor, is also a PKC-θ inhibitor. Anemonin can significantly inhibit the translation or protein stability of PKC-θ protein. Anemonin also ameliorates dextran sodium sulfate-induced acute ulcerative colitis (UC) in mice. Anemonin can be used in the research of inflammation-related diseases.
    (Rac)-Anemonin
  • HY-N3915
    Futoquinol
    Inhibitor
    Futoquinol is a neolignan isolated from the dried aerial parts of Piper kadsura (Piperaceae). Futoquinol potently inhibits NO production in microglia cells. Futoquinol has anti-neuroinflammatory activities.
    Futoquinol
  • HY-N6878
    Cauloside D
    99.69%
    Cauloside D is a triterpene glycoside isolated from Caulophyllum robustum Max. Cauloside D exerts anti-inflammatory effects through the inhibition of expression of iNOS and proinflammatory cytokines.
    Cauloside D
  • HY-N10913
    Chloranthalactone B
    Inhibitor
    Chloranthalactone B, a lindenane-type sesquiterpenoid, is a nature product that could be isolated from Chinese medicinal herb Sarcandra glabra. Chloranthalactone B inhibits the production of inflammatory mediators by inhibiting the AP-1 and p38 MAPK pathways.
    Chloranthalactone B
  • HY-13683S
    Mifepristone-d3
    Inhibitor
    Mifepristone-d3 is the deuterium labeled Mifepristone. 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-d<sub>3</sub>
  • HY-146066A
    (R)-α7 nAchR-JAK2-STAT3 agonist 1
    Agonist 99.59%
    (R)-α7 nAchR-JAK2-STAT3 agonist 1 is the R-enantiomer of α7 nAchR-JAK2-STAT3 agonist 1 (HY-146066). α7 nAchR-JAK2-STAT3 agonist 1 is a potent α7 nAchR-JAK2-STAT3 agonist, with an IC50 value of 0.32 μM for nitric oxide (NO). α7 nAchR-JAK2-STAT3 agonist 1 effectively suppresses the expression of iNOS, IL-1β, and IL-6 in murine RAW264.7 macrophages. α7 nAchR-JAK2-STAT3 agonist 1 can inhibit LPS-induced NO release, NF-κB activation and cytokine production. α7 nAchR-JAK2-STAT3 can be used for researching sepsis.
    (R)-α7 nAchR-JAK2-STAT3 agonist 1
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