NOS

Inhibitory Selectivity

NOS Products

All (19) NOS Inhibitors (15) NOS Antagonists (1) NOS Agonists (1)

Catalog No.	Information	Product Use Citations	Product Validations
S2877	L-NAME HCl L-NAME is a nonselective inhibitor of nitric oxide synthetases (NOS) for nNOS (bovine), eNOS (human), and iNOS (murine), with K_i of 15 nM, 39 nM and 4.4 μM, respectively.	Cell Biosci , 2020, 20;10:43 J Vasc Res, 2020, 6:1-11 Life Sci, 2019, 222:195-202	(C) HOSS1 cells were grown in soft agar, in the presence or absence of L-NAME (10 mM), and treated as indicated with drugs, as indicated, for 6 h and 12 h. Cells were subjected to electrophoresis and stained. The tail moments of cells were measured and presented below each image (n = 4, ± SEM) *P < 0.05 less than corresponding value in vehicle-treated cells.
S9208	Ginsenoside Rb3 Ginsenoside Rb3, extracted from the plant Panax ginseng, plays important roles in cardiovascular diseases, including myocardial ischemia-reperfusion (I/R) injury. Ginsenoside Rb3 (0.1-10 μM) is tested for inhibition of tumor necrosis factor-α (TNF)-induced nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) luciferase reporter activity using a human kidney 293T cell-based assay. Ginsenoside Rb3 shows the significant activity with an IC50 of 8.2 μM. Ginsenoside Rb3 also inhibits the induction of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) messenger Ribonucleic acid (mRNA) in a dose-dependent manner after HepG2 cells have been treated with TNF-α (10 ng/mL).
S8639	Diphenyleneiodonium chloride (DPI) Diphenyleneiodonium chloride (DPI) is an inhibitor of NADPH oxidase and also a potent, irreversible, and time-, temperature-dependent iNOS/eNOS inhibitor. Diphenyleneiodonium chloride (DPI) also functions as a TRPA1 activator and selectively inhibits intracellular reactive oxygen species (ROS).	Theranostics, 2020, 10(15):6743-6757 Clin Exp Allergy, 2020, 50(2):198-212 Int J Biochem Cell Biol, 2020, 121:105703
S8337	1400W 2HCl 1400W (N-(3-(Aminomethyl)benzyl)acetamidine) is a slow, tight binding, and highly selective inhibitor of inducible nitric-oxide synthase(iNOS).	IUBMB Life, 2019, 10.1002/iub.2032 Nitric Oxide, 2019, 85:1-9 Nat Commun, 2018, 9(1):873
S3261^New	Myrislignan Myrislignan, a lignan isolated from Myristica fragrans Houtt, possesses anti-inflammatory activities. Myrislignan inhibits interleukin-6 (IL-6) and tumour necrosis factor-α (TNF-α). Myrislignan significantly inhibits the expressions of inducible NO synthase (iNOS) and cyclooxygenase-2 (COX-2) dose-dependently in LPS-stimulated macrophage cells. Myrislignan inhibits the NF-κB signalling pathway activation.
S3304^New	Stylopine (Trahydocoptisine) Stylopine reduces nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor-alpha (TNF-alpha) and interleukin-1beta (IL-1beta), and the IL-6 production and cyclooxygenase-2 (COX-2) activity caused by the LPS stimulation. Stylopine is a major component of the leaf of Chelidonium majus L.
S3292^New	Falcarindiol Falcarindiol (FAD, (3R,8S)-Falcarindiol, FaDOH) is a natural polyacetylene compound found rich in many plants of the Umbelliferae family. Falcarindiol suppresses LPS-stimulated expression of inducible nitric oxide synthase (iNOS), tumor necrosis factor alpha (TNFα), interleukin-6 (IL-6), and interleukin-1 beta (IL-1β). Falcarindiol attenuates the LPS-induced activation of JNK, ERK, STAT1, and STAT3 signaling molecules.
S4962	Agmatine sulfate Agmatine sulfate is a bioactive metabolite of the arginine amino acid. It has been shown to increase nitric oxide, reduce blood sugar levels and even increase growth hormone levels.
S9029	Prim-o-glucosylcimifugin Prim-O-glucosylcimifugin is a major constituent in Radix Saposhnikovia that has been long used for the treatment of pyrexia, rheumatism, and cancer in traditional Chinese medicine. It shows potential anticancer activity. Prim-O-glucosylcimifugin downregulates the mRNA and protein expression inducible NO synthase (iNOS) and cyclooxygenase 2 (COX-2) in LPS-activated RAW 264.7 macrophages in a concentration-dependent manner.
S3931	Ginsenoside Rd Ginsenoside Rd, a minor ginseng saponin, has several pharmacological activities such as immunosuppressive activity, anti-inflammatory activity, immunological adjuvant, anti-cancer activity and wound-healing activity. Ginsenoside Rd inhibits TNFα-induced NF-κB transcriptional activity with an IC50 of 12.05±0.82 μM in HepG2 cells. Ginsenoside Rd inhibits expression of COX-2 and iNOS mRNA. Ginsenoside Rd also inhibits Ca2+ influx. Ginsenoside Rd inhibits CYP2D6, CYP1A2, CYP3A4, and CYP2C9, with IC50s of 58.0±4.5 μM, 78.4±5.3 μM, 81.7±2.6 μM, and 85.1±9.1 μM, respectively.
S9374	2',5'-Dihydroxyacetophenone 2',5'-Dihydroxyacetophenone is a mixture of dihydroxyacetophenone isomers is used in food flavouring. 2',5'-Dihydroxyacetophenone significantly inhibits NO production via the suppression of iNOS expression. 2',5'-Dihydroxyacetophenone significantly decreases levels of the pro-inflammatory cytokines TNF-α and IL-6 by blocking the ERK1/2 and NF-κB signaling pathways.
S3899	Hederagenin Hederagenin (Caulosapogenin, Hederagenol, Hederagenic acid, Astrantiagenin E) is a highly water insoluble triterpenoid compound that can be found in various plants including Hedera helix and Chenopodium quinoa. It exhibits a variety of biological activities, including potent antitumor properties both in vitro and in vivo.
S9502	Madecassic acid Madecassic acid, a natural triterpene first isolated from C. asiatica, has diverse anti-inflammatory and anti-diabetic effects, blocking NF-κB activation in macrophages and causing by iNOS, COX-2, TNF-alpha, IL-1beta and IL-6 inhibition.
S4548	Aminoguanidine hydrochloride Aminoguanidine is a diamine oxidase and nitric oxide synthase inhibitor. It acts to reduce levels of advanced glycation end products (AGEs) through interacting with 3-deoxyglucosone.	Am J Cancer Res, 2020, 10(5):1400-1415 Acta Biomater, 2018, 73:470-487 Front Immunol, 2018, 9:2283
S5542	7-Nitroindazole 7-Nitroindazole, a heterocyclic compound, acts as a selective inhibitor for neuronal nitric oxide synthase showing a 10-fold selectivity for neuronal NOS.
S6850^New	NE 52-QQ57 NE 52-QQ57 is a selective, and orally available antagonist of G-protein coupled receptor 4 (GPR4) with IC50 of 0.07 μM. NE 52-QQ57 effectively blocks GPR4-mediated cAMP accumulation with IC50 of 26.8 nM in HEK293 cells. The antagonism of GPR4 with NE 52-QQ57 significantly inhibits the AGE-induced increased expression of several key inflammatory cytokines and signaling molecules, including tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, IL-6, inducible nitric oxide synthase (iNOS), nitric oxide (NO), cyclooxygenase 2 (COX2), and prostaglandin E2 (PGE2).
S5229	Isosorbide dinitrate Isosorbide Dinitrate (ISDN) is the dinitrate salt form of isosorbide, an organic nitrate with vasodilator activity. Isosorbide Dinitrate is a medication used for heart failure, esophageal spasms, and to treat and prevent chest pain from not enough blood flow to the heart. Isosorbide Dinitrate can converte to nitric oxide (NO), an active intermediate compound which activates the enzyme guanylate cyclase (atrial natriuretic peptide receptor A).
S5577	6-Biopterin 6-Biopterin is a natural product that has been considered as a growth factor for some insects.
S3174	L-Arginine HCl (L-Arg) L-Arginine is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis.	J Cell Mol Med, 2018, 10.1111/jcmm.13532 J Cell Mol Med, 2018, 22(4):2378-2389

Catalog No.	Information	Product Use Citations	Product Validations
S2877	L-NAME HCl L-NAME is a nonselective inhibitor of nitric oxide synthetases (NOS) for nNOS (bovine), eNOS (human), and iNOS (murine), with K_i of 15 nM, 39 nM and 4.4 μM, respectively.	Cell Biosci , 2020, 20;10:43 J Vasc Res, 2020, 6:1-11 Life Sci, 2019, 222:195-202	(C) HOSS1 cells were grown in soft agar, in the presence or absence of L-NAME (10 mM), and treated as indicated with drugs, as indicated, for 6 h and 12 h. Cells were subjected to electrophoresis and stained. The tail moments of cells were measured and presented below each image (n = 4, ± SEM) *P < 0.05 less than corresponding value in vehicle-treated cells.
S9208	Ginsenoside Rb3 Ginsenoside Rb3, extracted from the plant Panax ginseng, plays important roles in cardiovascular diseases, including myocardial ischemia-reperfusion (I/R) injury. Ginsenoside Rb3 (0.1-10 μM) is tested for inhibition of tumor necrosis factor-α (TNF)-induced nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) luciferase reporter activity using a human kidney 293T cell-based assay. Ginsenoside Rb3 shows the significant activity with an IC50 of 8.2 μM. Ginsenoside Rb3 also inhibits the induction of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) messenger Ribonucleic acid (mRNA) in a dose-dependent manner after HepG2 cells have been treated with TNF-α (10 ng/mL).
S8639	Diphenyleneiodonium chloride (DPI) Diphenyleneiodonium chloride (DPI) is an inhibitor of NADPH oxidase and also a potent, irreversible, and time-, temperature-dependent iNOS/eNOS inhibitor. Diphenyleneiodonium chloride (DPI) also functions as a TRPA1 activator and selectively inhibits intracellular reactive oxygen species (ROS).	Theranostics, 2020, 10(15):6743-6757 Clin Exp Allergy, 2020, 50(2):198-212 Int J Biochem Cell Biol, 2020, 121:105703
S8337	1400W 2HCl 1400W (N-(3-(Aminomethyl)benzyl)acetamidine) is a slow, tight binding, and highly selective inhibitor of inducible nitric-oxide synthase(iNOS).	IUBMB Life, 2019, 10.1002/iub.2032 Nitric Oxide, 2019, 85:1-9 Nat Commun, 2018, 9(1):873
S3261^New	Myrislignan Myrislignan, a lignan isolated from Myristica fragrans Houtt, possesses anti-inflammatory activities. Myrislignan inhibits interleukin-6 (IL-6) and tumour necrosis factor-α (TNF-α). Myrislignan significantly inhibits the expressions of inducible NO synthase (iNOS) and cyclooxygenase-2 (COX-2) dose-dependently in LPS-stimulated macrophage cells. Myrislignan inhibits the NF-κB signalling pathway activation.
S3304^New	Stylopine (Trahydocoptisine) Stylopine reduces nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor-alpha (TNF-alpha) and interleukin-1beta (IL-1beta), and the IL-6 production and cyclooxygenase-2 (COX-2) activity caused by the LPS stimulation. Stylopine is a major component of the leaf of Chelidonium majus L.
S3292^New	Falcarindiol Falcarindiol (FAD, (3R,8S)-Falcarindiol, FaDOH) is a natural polyacetylene compound found rich in many plants of the Umbelliferae family. Falcarindiol suppresses LPS-stimulated expression of inducible nitric oxide synthase (iNOS), tumor necrosis factor alpha (TNFα), interleukin-6 (IL-6), and interleukin-1 beta (IL-1β). Falcarindiol attenuates the LPS-induced activation of JNK, ERK, STAT1, and STAT3 signaling molecules.
S4962	Agmatine sulfate Agmatine sulfate is a bioactive metabolite of the arginine amino acid. It has been shown to increase nitric oxide, reduce blood sugar levels and even increase growth hormone levels.
S9029	Prim-o-glucosylcimifugin Prim-O-glucosylcimifugin is a major constituent in Radix Saposhnikovia that has been long used for the treatment of pyrexia, rheumatism, and cancer in traditional Chinese medicine. It shows potential anticancer activity. Prim-O-glucosylcimifugin downregulates the mRNA and protein expression inducible NO synthase (iNOS) and cyclooxygenase 2 (COX-2) in LPS-activated RAW 264.7 macrophages in a concentration-dependent manner.
S3931	Ginsenoside Rd Ginsenoside Rd, a minor ginseng saponin, has several pharmacological activities such as immunosuppressive activity, anti-inflammatory activity, immunological adjuvant, anti-cancer activity and wound-healing activity. Ginsenoside Rd inhibits TNFα-induced NF-κB transcriptional activity with an IC50 of 12.05±0.82 μM in HepG2 cells. Ginsenoside Rd inhibits expression of COX-2 and iNOS mRNA. Ginsenoside Rd also inhibits Ca2+ influx. Ginsenoside Rd inhibits CYP2D6, CYP1A2, CYP3A4, and CYP2C9, with IC50s of 58.0±4.5 μM, 78.4±5.3 μM, 81.7±2.6 μM, and 85.1±9.1 μM, respectively.
S9374	2',5'-Dihydroxyacetophenone 2',5'-Dihydroxyacetophenone is a mixture of dihydroxyacetophenone isomers is used in food flavouring. 2',5'-Dihydroxyacetophenone significantly inhibits NO production via the suppression of iNOS expression. 2',5'-Dihydroxyacetophenone significantly decreases levels of the pro-inflammatory cytokines TNF-α and IL-6 by blocking the ERK1/2 and NF-κB signaling pathways.
S3899	Hederagenin Hederagenin (Caulosapogenin, Hederagenol, Hederagenic acid, Astrantiagenin E) is a highly water insoluble triterpenoid compound that can be found in various plants including Hedera helix and Chenopodium quinoa. It exhibits a variety of biological activities, including potent antitumor properties both in vitro and in vivo.
S9502	Madecassic acid Madecassic acid, a natural triterpene first isolated from C. asiatica, has diverse anti-inflammatory and anti-diabetic effects, blocking NF-κB activation in macrophages and causing by iNOS, COX-2, TNF-alpha, IL-1beta and IL-6 inhibition.
S4548	Aminoguanidine hydrochloride Aminoguanidine is a diamine oxidase and nitric oxide synthase inhibitor. It acts to reduce levels of advanced glycation end products (AGEs) through interacting with 3-deoxyglucosone.	Am J Cancer Res, 2020, 10(5):1400-1415 Acta Biomater, 2018, 73:470-487 Front Immunol, 2018, 9:2283
S5542	7-Nitroindazole 7-Nitroindazole, a heterocyclic compound, acts as a selective inhibitor for neuronal nitric oxide synthase showing a 10-fold selectivity for neuronal NOS.

Catalog No.	Information	Product Use Citations	Product Validations
S6850^New	NE 52-QQ57 NE 52-QQ57 is a selective, and orally available antagonist of G-protein coupled receptor 4 (GPR4) with IC50 of 0.07 μM. NE 52-QQ57 effectively blocks GPR4-mediated cAMP accumulation with IC50 of 26.8 nM in HEK293 cells. The antagonism of GPR4 with NE 52-QQ57 significantly inhibits the AGE-induced increased expression of several key inflammatory cytokines and signaling molecules, including tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, IL-6, inducible nitric oxide synthase (iNOS), nitric oxide (NO), cyclooxygenase 2 (COX2), and prostaglandin E2 (PGE2).

Catalog No.

Information

Product Use Citations

Product Validations

S6850^New

NE 52-QQ57

NE 52-QQ57 is a selective, and orally available antagonist of G-protein coupled receptor 4 (GPR4) with IC50 of 0.07 μM. NE 52-QQ57 effectively blocks GPR4-mediated cAMP accumulation with IC50 of 26.8 nM in HEK293 cells. The antagonism of GPR4 with NE 52-QQ57 significantly inhibits the AGE-induced increased expression of several key inflammatory cytokines and signaling molecules, including tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, IL-6, inducible nitric oxide synthase (iNOS), nitric oxide (NO), cyclooxygenase 2 (COX2), and prostaglandin E2 (PGE2).

Catalog No.	Information	Product Use Citations	Product Validations
S5229	Isosorbide dinitrate Isosorbide Dinitrate (ISDN) is the dinitrate salt form of isosorbide, an organic nitrate with vasodilator activity. Isosorbide Dinitrate is a medication used for heart failure, esophageal spasms, and to treat and prevent chest pain from not enough blood flow to the heart. Isosorbide Dinitrate can converte to nitric oxide (NO), an active intermediate compound which activates the enzyme guanylate cyclase (atrial natriuretic peptide receptor A).

Catalog No.

Information

Product Use Citations

Product Validations

S5229

Isosorbide dinitrate

Isosorbide Dinitrate (ISDN) is the dinitrate salt form of isosorbide, an organic nitrate with vasodilator activity. Isosorbide Dinitrate is a medication used for heart failure, esophageal spasms, and to treat and prevent chest pain from not enough blood flow to the heart. Isosorbide Dinitrate can converte to nitric oxide (NO), an active intermediate compound which activates the enzyme guanylate cyclase (atrial natriuretic peptide receptor A).

Catalog No.	Information	Product Use Citations	Product Validations
S5577	6-Biopterin 6-Biopterin is a natural product that has been considered as a growth factor for some insects.
S3174	L-Arginine HCl (L-Arg) L-Arginine is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis.	J Cell Mol Med, 2018, 10.1111/jcmm.13532 J Cell Mol Med, 2018, 22(4):2378-2389

Catalog No.

Information

Product Use Citations

Product Validations

S5577