2. Signaling Pathways
  3. Immunology/Inflammation
  4. NO Synthase
  5. nNOS Isoform

nNOS

Nitric oxide synthase (neuronal) (nNOS), also known as NOS1, is a synthase that catalyze the production of nitric oxide (NO) from L-arginine. nNOS constitutes the predominant source of NO in neurons and localizes to synaptic spines. Additionally, nNOS is also present in skeletal muscle, cardiac muscle and smooth muscle, where NO controls blood flow and muscle contractility. nNOS is primarily found in the nervous system and is necessary for neuronal signaling. Monomer of nNOS is inactive,dimer is its active form and the dimerization requires tetrahydrobiopterin (BH4), heme and L-arginine binding.

nNOS Related Products (29):

Cat. No. Product Name Effect Purity
  • HY-18732A
    L-NMMA acetate
    		Inhibitor 99.0%
    L-NMMA acetate is a nitric oxide synthase inhibitor of all NOS isoforms including NOS1, NOS2, and NOS3. The Ki values for nNOS (rat), eNOS (human), and iNOS (mouse) are approximately 0.18, 0.4, and 6 μM, respectively.
  • 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.
  • HY-100986
    L-NIO dihydrochloride
    		Inhibitor 99.17%
    L-NIO dihydrochloride is a potent, non-selective and NADPH-dependent nitric oxide synthase (NOS) inhibitor, with Kis of 1.7, 3.9, 3.9 μM for neuronal (nNOS), endothelial (eNOS), and inducible (iNOS), respectively. L-NIO dihydrochloride induces a consistentfocal ischemic infarctin rats.
  • HY-P0117
    Tat-NR2B9c
    		Inhibitor 99.89%
    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.
  • HY-69019
    7-Nitroindazole
    		Inhibitor 99.09%
    7-Nitroindazole is a selective and BBB-penetrable inhibitor of nitric oxide synthase (NOS) (IC50 = 0.47 μM in mouse cerebellum). 7-Nitroindazole does not affect blood pressure or endothelium-dependent relaxation while inhibiting nNOS in experimental animals. 7-Nitroindazole has anti-injurious and neuroprotective properties, and can be studied in research for neurological diseases such as Parkinson’s disease.
  • HY-181545A
    nNOS-IN-2 trihydrochloride
    		Inhibitor
    nNOS-IN-2 trihydrochloride is a blood-brain barrier-permeable nitric oxide synthase (nNOS) inhibitor. nNOS-IN-2 trihydrochloride exhibits Ki values of 1.7 nM and 2.3 nM against human and rat nNOS, respectively, and shows high selectivity for human eNOS and iNOS. nNOS-IN-2 trihydrochloride also effectively reduces PD-L1 expression in human melanoma cells under both basal conditions and IFN-γ exposure. nNOS-IN-2 trihydrochloride can be used for the study of melanoma and related signaling pathways.
  • HY-182519
    HMN-1180
    		Inhibitor
    HMN-1180 is a selective, competitive neuronal nitric oxide synthase (nNOS) inhibitor with a Ki value of 5.4 μM against rat nNOS. HMN-1180 exerts no significant effect on endothelial nitric oxide synthase (eNOS) or inducible nitric oxide synthase (iNOS). HMN-1180 inhibits nitric oxide production. HMN-1180 can be used for the study of nNOS-related neuronal functional physiology.
  • HY-19230
    DY-9760e
    		Inhibitor
    DY-9760e is a calmodulin (CaM) inhibitor. DY-9760e selectively inhibits the activity of various calmodulin-dependent enzymes by antagonizing the Ca²⁺/CaM complex, exhibiting the strongest inhibitory activity against nNOS, CaM kinase II, and calcineurin (Ki: 0.9, 1.4, and 2.0 μM, respectively). DY-9760e inhibits excessive nitric oxide production and protein tyrosine nitration, as well as the activation of calpain and caspase-3. DY-9760e reduces infarct size, improves cardiac function, and inhibits oxidative stress and cell death. DY-9760e can be used in research on the treatment of myocardial infarction, cerebral ischemia, and other diseases.
  • HY-B0503
    2-Thiouracil
    		Inhibitor 99.91%
    2-Thiouracil (Thiouracil) is a selective neuronal nitric oxide synthase (nNOS) inhibitor with a Ki value of 20 μM. 2-Thiouracil antagonizes BH4-induced nNOS dimerization. 2-Thiouracil is also an antithyroid compound and a highly specific melanoma detector. 2-Thiouracil stimulates the growth of pea and corn root segments.
  • HY-B1478
    Dimaprit dihydrochloride
    		Inhibitor 99.91%
    Dimaprit dihydrochloride is a selective histamine H2 receptor agonist, it also inhibits nNOS with an IC50 of 49 μM. Dimaprit dihydrochloride can stimulate gastric acid secretion.
  • 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.
  • 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.
  • 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.
  • HY-W022047
    nNOS-IN-1
    		Inhibitor 99.53%
    nNOS-IN-1(Compound 14) is an inhibitor for nitric oxide synthases (NOS), that exhibits inhibitory activities against neuroal, inducible and endothelial NOS, with IC50s of 2.5, 5.7 and 13 μM, respectively.
  • HY-130452
    NOS1-IN-1
    		Inhibitor
    NOS1-IN-1 is a selective and cell-permeable nNOS inhibitor with a Ki of 120 nM. NOS1-IN-1 exhibits 2617-fold and 325-fold selectivity over eNOS (Ki=39 μM) and iNOS (Ki=325 μM) , respectively. NOS1-IN-1 can be used for the research of neurological disease, including cerebral palsy (CP).
  • 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.
  • 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.
  • HY-P0184
    Camstatin
    		Inhibitor
    Camstatin, a functionally active 25-residue fragment of PEP-19's IQ motif, binds calmodulin and inhibits neuronal nitric oxide (NO) synthase.
  • HY-W484263
    hnNOS-IN-3
    		Inhibitor 98.60%
    hnNOS-IN-3 (compound 39) is a selective nNOS inhibitor, with a Ki of 0.32 μM. The nNOS binding of hnNOS-IN-3 is competitive with L-arginine. The selectivity of hnNOS-IN-3 for nNOS versus iNOS (Ki=37 μM) and eNOS (Ki=9.4 μM) is 115-fold and 29-fold, respectively.
  • HY-14343
    KLYP961
    		Inhibitor
    KLYP961 is a selective and orally active dual inhibitor of inducible and neuronal NO synthase (IC50 = 50-400 nM). KLYP961 can inhibit endotoxin-evoked plasma nitrates increases and attenuate pain behaviors in a mouse formalin model. KLYP961 can attenuate carrageenin-induced edema and inflammatory hyperalgesia and writhing response elicited by Phenylbenzoquinone (HY-W275039). KLYP961 can be used for the research of neurological disease.
Cat. No. Product Name / Synonyms Application Reactivity