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NOS

Nitric oxide synthases(NOSs) are a family of enzymes catalyzing the production of nitric oxide (NO) from L-arginine. NO is an important cellular signaling molecule. It helps modulate vascular tone, insulin secretion, airway tone, and peristalsis, and is involved in angiogenesis and neural development. It may function as a retrograde neurotransmitter. Nitric oxide is mediated in mammals by the calcium-calmodulin controlled isoenzymes eNOS (endothelial NOS) and nNOS (neuronal NOS).

Micheliolide
T568868370-47-8
Micheliolide(MCL) is a sesquiterpene lactone which inhibits various inflammatory response.
  • $39
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Cindunistat
T69356364067-22-1In house
Cindunistat (free base) is an orally available selective iNOS inhibitor for the study of arthritis.
  • $258
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Banoxantrone dihydrochloride
T10459252979-56-9In house
Banoxantrone dihydrochloride (AQ4N dihydrochloride) is a novel hypoxic cytotoxin that selectively kills hypoxic cells through an iNOS-dependent mechanism.
  • $72
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GW274150
T11518L210354-22-6In house
GW274150 is an orally active, selective and potent dual inhibitor of NADPH-dependent human nitric oxide synthase (iNOS) (Kd=40 nM) and rat inducible nitric oxide synthase (iNOS).GW274150 has a low activity against endothelial nitric oxide synthase (eNOS) and neuronal nitric oxide synthase (nNOS) in humans and rats. GW274150 showed protective effects in an inflammatory model of acute lung injury.
  • $32
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Cannabigerol
TN146525654-31-3
Cannabigerol is a high affinity α±2-adrenergic receptor agonist, moderate affinity 5-HT1A receptor antagonist, and low affinity CB1 receptor antagonist ; also binds to the CB2 receptor; it can relieve interocular pressure, which may be of benefit in the treatment of glaucoma.
  • $148
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Diphenyleneiodonium chloride
T71914673-26-1
Diphenyleneiodonium chloride (DPI)(DPI) is an irreversible inhibitor of iNOS and eNOS (IC50 values of 50 nM and 0.3 μM, respectively),and displays broad-spectrum bactericidal activity.
  • $38
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Negletein
T2S084329550-13-8
1. Negletein (7-O-Methylbaicalein) has anti-inflammatory and immunomodulatory activities via inhibition of TNF-α, iNOS and IL-1β. 2. Negletein as a neuroprotectant enhances the action of nerve growth factor and induces neurite outgrowth in PC12 cells. 3. Negletein shows a comparable redox-active potential, and it (50 μM, 4 h) can activate Nrf2. 4. Negletein shows significant antimicrobial activity. 5. Negletein has anti-hypoxia activity, it can significantly prolong the survival time of hypoxic mice.6. Negletein has anti- Alzheimer's disease activity, it inhibits the iron-dependent formation of ROS and also blocks the iron-induced oligomerization of amyloid beta 42 in vitro. 7. Negletein (IC50: 3.89 + - 0.39 microM) exhibits potent inhibitory activity against nuclear factor of activated T cells (NFAT) transcription factor.
  • $128
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NOS1-IN-1
T37696357965-99-2
NOS1-IN-1(nNOS Inhibitor I) is a potent, selective and cell permeable nNOS inhibitor (Ki: 120 nM).NOS1-IN-1 has a Ki value of 39 μM for eNOS and 325 μM for iNOS.NOS1-IN-1 can be used for the study of neurological disorders such as cerebral palsy.
  • $106
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Hydrangenol
TN4234480-47-7In house
Hydrangenol is a natural product and can be isolated from Hydrangea serrata leaves. Hydrangenol is an antiphotoaging compound with oral activity. Hydrangenol can reduce MMP and inflammatory cytokine expression and increase moisturizing factors and antioxidant genes level, result in preventing wrinkle formation.
  • $139
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L-NAME hydrochloride
T657051298-62-5
L-NAME hydrochloride (L-NAME HCl), a cell-permeable NO synthase inhibitor, displays Ki values of 4.4 μM, 15 nM, and 39 nM, for iNOS (mouse) , nNOS (bovine) , and eNOS (human), respectively.
  • $46
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Demethyleneberberine
T4S080025459-91-0
Demethyleneberberine, which is composed of a potential antioxidant structure, could penetrate the membrane of mitochondria and accumulate in mitochondria either in vitro or in vivo.Demethyleneberberine suppresses CYP2E1, hypoxia inducible factor α, and inducible nitric oxide synthase, which contributes to oxidative stress and restored sirtuin 1 AMP-activated protein kinase peroxisome proliferator-activated receptor-γ coactivator-1α pathway-associated fatty acid oxidation in chronic ethanol-fed mice.
  • $61
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S-(2-aminoethyl) Isothiourea (dihydrobromide)
T754356-10-0
S-(2-aminoethyl) Isothiourea (dihydrobromide) is a non-selective inhibitor of all NOS isoforms. For human nNOS, eNOS, and iNOS, the Ki values are 1.8, 2.1, and 0.59 µM, respectively
  • $38
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Syringin
T3408118-34-3
Syringin (eleutheroside-b) is a compound with antitumor, antiproliferative, immunomodulatory and platelet aggregation inhibiting effects.
  • $45
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α-Humulene
TN13736753-98-6
α-Humulene (Alpha-caryophyllene) is extracted from S.officinalis essential oil.α-Humulene can inhibit tumor cell growth.α-Humulene also shows anti-inflammatory effects, probably by interfering with TNFalpha production and COX-2 and iNOS expression.
  • $74
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Tetrahydrobiopterin
T1705617528-72-2
Tetrahydrobiopterin (BH4) is a cofactor for aromatic amino acid hydroxylases and an essential cofactor for nitric oxide synthase (NOS), which is used in the study of endothelial dysfunction such as hypertension, hypercholesterolemia, and diabetes.
  • $40
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Tubuloside A
T5S0281112516-05-9
Tubuloside A ( 8.6 microM) can inhibit D-galactosamine-induced death of hepatocytes. Tubuloside A has NO radical-scavenging activity, which possibly contributes to its anti-inflammatory effects.Tubuloside A shows stronger free radical scavenging activitie
  • $36
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Friedelin
TN1650559-74-0
Friedelin possesses antioxidant, gastroprotective, anti-diarrhoeal, liver protective, anti-inflammatory, analgesic and antipyretic activities.
  • $81
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AVE-9488
T30219291756-32-6
AVE-9488 is a novel endothelial NO synthase (eNOS) enhancer that upregulates eNOS expression, induces NO production, and may ameliorate portal hypertension.
  • $293
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Regaloside B
TN2139114420-67-6
Regaloside B, a phenylpropanoid isolated from Lilium longiflorum, exhibits anti-inflammatory activity by inhibiting the expression of iNOS (inducible nitric oxide synthase) and COX-2 (cyclooxygenase-2).
  • $63
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Catalposide
TN36096736-85-2
Catalposide is a potent inducer of (HO)-1 isolated from Catalpa ovate G. Don (Bignoniaceae). Catalposide possesses antioxidant, anti-apoptotic, anti-microbial, anti-tumoral, and anti-inflammatory properties.
  • $228
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Ruscogenin
T6S1256472-11-7
1. Ruscogenin has anti-inflammatory activity, suppressed zymosan A-evoked peritoneal total leukocyte migration in mice in a dose-dependent manner, 2. Ruscogenin inhibited adhesion of leukocytes to a human umbilical vein endothelial cell line (ECV34) injured by tumor necrosis factor-alpha (TNF-alpha) in a concentration-dependent manner. 3. Ruscogenin significantly attenuate LPS-induced acute lung injury via inhibiting expressions of TF and iNOS and NF-kappa B p65 activation.
  • $36
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L-NMMA acetate
T1569753308-83-1
L-NMMA acetate (Tilarginine acetate) is an inhibitor of nitric oxide synthase of all NOS isoforms (i.e. NOS1, NOS2, and NOS3). The Ki values are 0.18, 0.4, and 6 µM for nNOS, eNOS, and iNOS, respectively.
  • $34
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Pelargonidin chloride
TN1058134-04-3
Pelargonidin chloride shows protective effect against CTN-induced oxidative stress in HepG2 cells and up-regulated the activity of detoxification enzyme levels through Keap1 Nrf2 signaling pathway.
  • $98
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Carboxyebselen
T39020153871-75-1
Carboxyebselen (HOOC-Ebs) is an endothelial nitric oxide synthase (eNOS) inhibitor that is potent and selective.
  • $97
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Sinapyl alcohol
TN2440537-33-7
Technical grade is a natural from Magnolia sieboldii
  • $47
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Aminoguanidine hydrochloride
T03581937-19-5
Aminoguanidine hydrochloride (Hydrazinecarboximidamide) is a diamine oxidase and NO synthase inhibitor, used in the treatment of diabetic nephropathy.
  • $36
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Tirucallol
TN1006514-46-5
Tirucallol is an antiinflammatory agent isolated from Euphorbia lactea.Tirucallol exerts a topical anti-inflammatory effect in vivo, via a mechanism of action related to the neutrophil migration.
  • $89
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Cnidicin
TN151614348-21-1
Cnidicin has anti-allergic and anti-inflammatory activity, it inhibits the degranulation of mast cell and the NO generation in RAW 264.7 cells(IC50 value, 7.5 microM). Cnidicin exhibits a significant inhibition on the proliferation of cultured human tumor
  • $153
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AICAR phosphate
T14149681006-28-0
AICAR phosphate (Acadesine phosphate) is an AMPK activator and inhibitor of autophagy, YAP, and mitophagy. It serves as an adenosine analog, regulating glucose and lipid metabolism, and inhibiting the production of pro-inflammatory cytokines and iNOS.
  • $49
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Soyasaponin Ab
TN2232118194-13-1
Soyasaponin Ab may represent a viable candidate for effective vaccine adjuvant, TLR4 receptor dependent pathway may be involved in immune stimulatory effects of soyasaponin Ab.
  • $46
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Myricetin 3-O-galactoside
TN196215648-86-9
Myricetin 3-O-galactoside (Myricetin 3-O-beta-D-galactopyranoside) can inhibit xanthine oxidase (xanthine oxidase; XO) activity, lipid peroxidation and scavenging free radicals. Myricetin 3-O-galactoside has many effects, including cytotoxicity, anti-oxidation, anti-genotoxicity, anti-infectivity, anti-inflammatory and antioxidant activities, and its main effect is to inhibit the synthesis of inducible nitric oxide synthase (iNOS). The IC50 of Myricetin 3-O-galactoside inhibited lipid peroxidation was 160 μg mL.
  • $172
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Neotuberostemonine
T4953143120-46-1
Neotuberostemonine (NTS) is one of the main antitussive alkaloids in the root of Stemona tuberosa Lour, it has a significant protective effect on bleomycin (BLM)-induced pulmonary fibrosis through suppressing the recruitment and M2 polarization of macroph
  • $47
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Miconazole
T034422916-47-8
Miconazole (R18134) is an imidazole antifungal agent used both topically and via intravenous infusion.
  • $39
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Neoandrographolide
T388427215-14-1
Neoandrographolide (Neoandrographiside) has potent hypolipidemic effect and protects the cardiovascular without significant liver damage.Neoandrographolide has anti-inflammatory effect, might result from inhibition of iNOS and COX-2 expression through inhibiting p38 MAPKs activation.Neoandrographolide as chemosensitizer in S-Jurkat and X chromosome-linked inhibitor of apoptosis protein (XIAP)-overexpressing Jurkat cells, a model for chemoresistance.
  • $68
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Ac2-26 ammonium
T78371
Ac2-26 ammonium is an Annexin-A1 (AnxA1) N-terminal derived peptide with anti-inflammatory activity and alleviates liver ischemia-reperfusion injury in mice by regulating IL-22 IL-22R1 STAT3 signaling and eNOS pathways.
  • $52
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3,4-O-Isopropylidene-shikimic acid
TN1238183075-03-8
3,4-O-Isopropylidene-shikimic acid (3,4-O-Isopropylidene shikimic acid) exhibits significant anti-inflammatory, anti-thrombosis, antioxidant, and analgesic effects, and provides protective benefits against trinitrobenzenesulfonic acid-induced experimental colitis in rats, likely because of its antioxidant properties.
  • $68
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1400W dihydrochloride
T3491214358-33-5
1400W dihydrochloride (N-(3-(Aminomethyl)benzyl)acetamidine) is a highly effective and specific inhibitor of inducible NOS2 (iNOS).
  • $43
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MEG hemisulfate
T219673979-00-8In house
MEG hemisulfate (Mercaptoethylguanidine hemisulfate) acts as a highly potent and selective suppressor of inducible NO synthase (iNOS), demonstrating EC50 values of 11.5 μM for iNOS, 110 μM for ecNOS, and 60 μM for bNOS in tissue homogenates. It is notably effective as a peroxynitrite scavenger and blocks peroxynitrite-triggered oxidative mechanisms. Furthermore, this compound offers protective benefits across various experimental inflammation prototypes, such as ischemia reperfusion injury, hemorrhagic shock, periodontitis, inflammatory bowel disease, and both endotoxic and septic shock.
  • $30
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Flavone
T2876525-82-6
Flavone (2-Phenyl-4-chromone) have effects on CYP (P450) activity which are enzymes that metabolize most drugs in the body.
  • $42
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Cyclo(L-Pro-L-Val)
T1251202854-40-2
Cyclo(L-Pro-L-Val), a 2,5-diketopiperazine extracted from the fruits of Mycobacterium chiliolyticum AZ2 and Mycobacterium leprae, possesses anti-inflammatory activity and virulence activity against phytopathogenic microorganisms (e.g., R. fascians LMG 3605) and inhibits Gram-positive plant pathogens.Cyclo(L-Pro-L-Val) significantly inhibited IKKα phosphorylation and IκBα and NF-κB activation as well as iNOS and COX-2 activation in a concentration Cyclo(L-Pro-L-Val) significantly inhibited the phosphorylation of IKKα, IKKβ, IκBα, and NF-κB, as well as the activation of iNOS and COX-2 in a concentration-dependent manner, and is a potential therapeutic agent for the treatment of inflammation-related diseases.
  • $39
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Dexamethasone acetate
T09471177-87-3
Dexamethasone acetate (NSC 39471) is the acetate salt form of Dexamethasone, a synthetic adrenal corticosteroid with potent anti-inflammatory properties. In addition to binding to specific nuclear steroid receptors, dexamethasone also interferes with NF-kB activation and apoptotic pathways. This agent lacks the salt-retaining properties of other related adrenal hormones.
  • $45
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EX-A5758
T9955308277-46-5
EX-A5758 is a novel putative small molecule nNOS-NOS1AP inhibitor, suppressing inflammatory nociception and chemotherapy-induced neuropathic pain and synergizes with paclitaxel to reduce tumor cell viability.
  • $33
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S-Methylisothiourea sulfate
T22419867-44-7
S-Methylisothiourea sulfate ((S)-Methylisothiourea sulfate) is a potent and selective inhibitor of iNOS and exerts beneficial effects in rodent models of septic shock[1].
  • $33
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NOS-IN-1 
T21700165383-72-2In house
NOS-IN-1 (2-Imino-4-methylpiperidine acetate) is a potent and orally active inhibitor of NO synthase (NOS) isoforms. NOS-IN-1 exhibits IC50s of 0.1 μM, 0.2 μM, and 1.1μM for human iNOS (hiNOS), hnNOS and heNOS, respectively.
  • $59
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Isolinderalactone
T8213957-66-4
Isolinderalactone shows anti-inflammatory and anticancer capacity, and it exhibits moderate iNOS inhibitory activity, with the IC50 value of 0.30 uM.
  • $80
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EIT hydrobromide
T227611071-37-0
EIT hydrobromide (S-Ethylisothiourea hydrobromide) is an iNOS inhibitor.
  • $29
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TRIM
T1991625371-96-4
TRIM (1-(2-Trifluoromethylphenyl)imidazole) is an inhibitor of nNOS.
  • $33
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L-NIL
T1180553774-63-3
L-NIL is a selective nitric oxide synthase (iNOS) inhibitor that reverses burn-induced activation of glycogen synthase kinase-3β in rat skeletal muscle and may slow the progression of squamous cell carcinoma lung.
  • $29
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