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-N15507
    Harzianoside A
    		Inhibitor
    Harzianoside A is a diterpene aminoglycoside compound discovered from Trichoderma sp. SCSIOW21. Harzianoside A has the activity of inhibiting the production of NO and can be used in the research of the anti-inflammatory field.
    Harzianoside A
  • HY-N9092
    Geranyl ferulate
    		Inhibitor
    Geranyl ferulate ((E)-geranylferulic acid), isolated from Zingiber officinale, exhibits inhibitory effect on the production of nitric oxide (NO).
    Geranyl ferulate
  • HY-146167
    iNOS/PGE2-IN-1
    		Inhibitor
    iNOS/PGE2-IN-1 (compound 4a), an iNOS/PGE2 inhibitor, is a potent anti-inflammatory agent. iNOS/PGE2-IN-1 can inhibit LPS-induced NO production. iNOS/PGE2-IN-1 possesses low ulcerogenic liabilities.
    iNOS/PGE2-IN-1
  • HY-116885
    Thunalbene
    		Inhibitor
    Thunalbene is a stilbene derivative isolated from Thunia alba. Thunalbene has a weak inhibitory effect on nitric oxide production and is not cytotoxic.
    Thunalbene
  • HY-N11996
    Aloenin aglycone
    Aloenin aglycone (compound 13) is an NF-κB inhibitor that can be isolated from aloe exudate. Aloenin aglycone inhibits TNFα-induced NF-κB transcriptional activity (IC50: 18.7 μM). Aloenin aglycone (10 μM) also reduced inducible nitric oxide synthase (iNOS) and intercellular adhesion molecule 1 (ICAM-1) gene expression after treatment of HepG2 cells with 10 ng/mL TNFα.
    Aloenin aglycone
  • HY-N2838
    Alismol
    		Inhibitor
    Alismol is a natural sesquiterpene. Alismol shows promising inhibitory effects on INF-γ-induced nitric oxide production in murine macrophage RAW264.7 cells.
    Alismol
  • HY-P2307A
    Tat-NR2Baa TFA
    Tat-NR2BAA TFA is the control peptide of Tat-NR2B9c (HY-P0117), inactive. The sequence of Tat-NR2BAA TFA 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 TFA
  • HY-N15651
    Asperflavin
    		Inhibitor
    Asperflavin is an anti-inflammatory compound that can be produced by the marine fungus Eurotium amstelodami. Asperflavin inhibits the production of NO, PGE2, and proinflammatory cytokines, as well as the expression of inducible NOS (iNOS) in RAW 264.7 cells treated with LPS (HY-D1056). Asperflavin can be used in the study of inflammatory diseases.
    Asperflavin
  • HY-N0997
    (6E)-1,7-Bis(4-hydroxyphenyl)-6-hepten-3-one
    		Inhibitor
    (6E)-1,7-Bis(4-hydroxyphenyl)-6-hepten-3-one (compound7) is a nature product isolated from rhizomes of Curcuma kwangsiensis. (6E)-1,7-Bis(4-hydroxyphenyl)-6-hepten-3-one has inhibitory effect on NO production induced by LPS in macrophages with an IC50 value of 8.93 μM.
    (6E)-1,7-Bis(4-hydroxyphenyl)-6-hepten-3-one
  • HY-N9046
    Citroside A
    		Inhibitor
    Citroside A is a megastigmane sesquiterpenoid with cytotoxic and anti-inflammatory activities. Citroside A displays potential effects against NO production with an IC50 of 34.25 μM. Citroside A exhibits pronounced cytotoxicity against SGC-7901 and HeLa cells with IC50 values of 27.52 μM and 29.51 μM, respectively.
    Citroside A
  • HY-125740R
    Malvidin-3-glucoside chloride (Standard)
    		Inhibitor
    Malvidin-3-glucoside (Malvidin-3-O-glucoside; Oenin) chloride (Standard) is the analytical standard of Malvidin-3-glucoside chloride (HY-125740). This product is intended for research and analytical applications. Malvidin-3-glucoside chloride is an orally active inhibitor of the NF-κB pathway, which blocks inflammatory responses induced by TNF-α, reduces IκB-α degradation and p65 nuclear translocation, and upregulates endothelial nitric oxide synthase eNOS to increase NO production. Malvidin-3-glucoside chloride exerts anti-inflammatory and antioxidant effects by inhibiting pro-inflammatory molecules such as MCP-1, ICAM-1, and IL-6, and regulating intestinal microorganisms and metabolites, while protecting endothelial cells and improving intestinal microecological dysbiosis under inflammatory conditions. Malvidin-3-glucoside chloride can be used to study chronic inflammatory-related diseases such as atherosclerosis and inflammatory bowel disease, and has the potential to prevent vascular inflammation and improve intestinal health.
    Malvidin-3-glucoside chloride (Standard)
  • HY-N6602R
    α-Solanine (Standard)
    		Inhibitor
    α-Solanine (Standard) is the analytical standard of α-Solanine. This product is intended for research and analytical applications. 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 (Standard)
  • HY-N2715
    6-Methoxynaringenin
    		Inhibitor
    6-Methoxynaringenin is a natural flavonoid that inhibits NO production with an IC50 of 25.8 μM.
    6-Methoxynaringenin
  • HY-P10385
    SPSB2-iNOS inhibitory cyclic peptide-3
    SPSB2-iNOS inhibitory cyclic peptide-3 (Compound CP3) is an inhibitor for the interaction of SPRY domain and SOCS-box protein 2 (SPSB2) and iNOS, through binding SPSB2 on iNOS site with KD of 7 nM.
    SPSB2-iNOS inhibitory cyclic peptide-3
  • HY-128754R
    Monoolein (Standard)
    		Inhibitor
    Monoolein is a biocompatible lipid molecule that can be used as a carrier for bone repair. Monoolein exhibits anti-inflammatory activity by inhibiting the immune response induced by LPS (HY-D1056). It exerts its anti-inflammatory effects by reducing the production of immune response factors such as IL-12 p40, IL-6, and TNF-α, and inhibiting the generation of NO. Monoolein can be used in drug delivery and research in the field of inflammatory diseases .
    Monoolein (Standard)
  • HY-169103
    Neuroprotective agent 5
    		Inhibitor
    Neuroprotective agent 5 (compound 28) is a brain permeabilizing agent with anti-neuritis, anti-oxidative damage and neuroprotective effects. Neuroprotective agent 5 exhibits a potent NO inhibitory effect (EC50=0.49 μM), inhibits the release of proinflammatory factors PGE2 and TNF-α, downregulates the expression of iNOS and COX-2 proteins, and promotes the polarization of BV-2 cells from the proinflammatory M1 phenotype to the anti-inflammatory M2 phenotype. In addition, Neuroprotective agent 5 can also inhibit acetylcholinesterase (AChE) activity and Aβ42 aggregation in a dose-dependent manner. Neuroprotective agent 5 can be used for the study of Alzheimer's disease.
    Neuroprotective agent 5
  • HY-163888
    NO-IN-1
    		Inhibitor
    NO-IN-1 (Compound 7a) inhibits the production of NO (IC50 = 3.13 μΜ). NO-IN-1 has anti-inflammatory effects. NO-IN-1 downregulates the expression of COX-2 and iNOS by inhibiting the NF-κB signaling pathway.
    NO-IN-1
  • HY-115916
    NOS-IN-2
    		Inhibitor
    NOS-IN-2 (Compound 4i) is a potent, selective, imidamide derived NOS inhibitor with an IC50 against iNOS of 20 µM, without inhibiting eNOS. NOS-IN-2 has little toxicity and can be used for studying inflammatory disorders.
    NOS-IN-2
  • HY-N2406R
    Dihydrocaffeic acid (Standard)
    		Activator
    Ditalimfos (Standard) is the analytical standard of Ditalimfos. This product is intended for research and analytical applications. Ditalimfos is an organophosphate fungicide. Ditalimfos is mainly used in agriculture to control fungal diseases of crops. Ditalimfos can be used for fungal resistance studies and risk assessment of residues in the environment.
    Dihydrocaffeic acid (Standard)
  • HY-N15504
    Cycloneroside C
    		Inhibitor
    Cycloneroside C is a novel sesquiterpene aminoglycoside compound discovered from the deep - sea - sediment fungus Trichoderma sp. SCSIOW21. Cycloneroside C has the activity of inhibiting the production of NO. In the experiment with macrophage RAW 264.7 cells, its IC50 value for inhibiting the production of NO is 57.1 μM. Cycloneroside C can be used in the research of the anti - inflammatory field.
    Cycloneroside C
Cat. No. Product Name / Synonyms Application Reactivity
NO Synthase Isoform Comparison

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