2. Signaling Pathways
  3. Neuronal Signaling
  4. Monoamine Oxidase

Monoamine Oxidase

MAO

Monoamine Oxidase

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Monoamine oxidases (MAO) are a family of enzymes that catalyze the oxidation of monoamines. They are found bound to the outer membrane of mitochondria in most cell types in the body. They belong to the protein family of flavin-containing amine oxidoreductases. Monoamine oxidases catalyze the oxidative deamination of monoamines. Oxygen is used to remove an amine group from a molecule, resulting in the corresponding aldehyde and ammonia. Monoamine oxidases contain the covalently bound cofactor FAD and are, thus, classified as flavoproteins. Because of the vital role that MAOs play in the inactivation of neurotransmitters, MAO dysfunction is thought to be responsible for a number of psychiatric and neurological disorders. MAO-A inhibitors act as antidepressant and antianxiety agents, whereas MAO-B inhibitors are used alone or in combination to treat Alzheimer’sand Parkinson’s diseases.

Monoamine Oxidase Isoform Specific Products:

Monoamine Oxidase Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-163474
    MAO-B-IN-32
    		Inhibitor
    MAO-B-IN-32 is an inhibitor of MAO-B (IC50 = 16 nM).MAO-B-IN-32 increases dopamine concentration in the brain by inhibiting MAO-B activity.
    MAO-B-IN-32
  • HY-151562
    AChE/BuChE/MAO-B-IN-1
    		Inhibitor
    AChE/BuChE/MAO-B-IN-1 (compound 19) is an inhibitor of human acetyl- (hAChE), butyrylcholinesterase (hBuChE) and monoamine oxidase-B (hMAO-B) with IC50s of 4.8 μM, 13.7 μM, and 1.11 μM, respectively. AChE/BuChE/MAO-B-IN-1 also exhibits high affinity to both the σ1 and σ2 receptors with Ki values of 42.8 nM (human σ1 receptor) and 191 nM (rat σ2 receptor), respectively. AChE/BuChE/MAO-B-IN-1 can be used for Alzheimer’s disease research.
    AChE/BuChE/MAO-B-IN-1
  • HY-135265
    Moclobemide N-Oxide
    		Inhibitor
    Moclobemide N-Oxide (Ro 12-5637) is N-oxide metabolite of Moclobemide. Moclobemide N-Oxide retains certain MAO-A (monoamine oxidase) inhibitory activity, but is generally present in low concentrations. Moclobemide N-Oxide can be detected by UV absorption at 240 nm.
    Moclobemide N-Oxide
  • HY-144790
    AChE-IN-12
    		Inhibitor
    AChE-IN-12 is a potent and blood-brain barrier (BBB) penetrant acetylcholinesterase (AChE) with IC50s of 0.41 μM and 1.88 μM for rat AChE and electric eel AChE. AChE-IN-12 is also a good antioxidant (ORAC = 3.3 eq), selective metal chelator and huMAO-B inhibitor (IC50 = 8.8 μM). AChE-IN-12 has remarkable inhibition of self- and Cu2+-induced Aβ1-42 aggregation, as well as exhibits a good neuroprotective effect. AChE-IN-12 can be used for researching Alzheimer’s disease.
    AChE-IN-12
  • HY-151094
    FTEAA
    		Inhibitor
    FTEAA is a 4-styrylpiperidine inhibitor. FTEAA exhibits potent inhibitory effect towards both monoamine oxidase with IC50s of 0.52 μM (MAO-A), 1.02 μM (MAO-B), respectively. MAO inhibitors can be used for cardiovascular, neurological and oncological disorders research.
    FTEAA
  • HY-152114
    AChE/BChE/MAO-B-IN-4
    		Inhibitor
    AChE/BChE/MAO-B-IN-4, an indan-1-one derivative, is a potent MAO-B inhibitor with an IC50 of 0.0393 μM for human MAO-B. AChE/BChE/MAO-B-IN-4 is a potent AChE and BChE enzyme inhibitor, with IC50s of 0.0458 μM and 0.075 μM for human AChE and BChE enzyme, respectively. AChE/BChE/MAO-B-IN-4 shows significant antioxidant activity and prevent β-amyloid plaque aggregation. AChE/BChE/MAO-B-IN-4 has the potential for Alzheimer's disease (AD) research.
    AChE/BChE/MAO-B-IN-4
  • HY-155580
    MAO A/HSP90-IN-2
    		Inhibitor
    MAO A/HSP90-IN-2 (compound 4-C) is a dual inhibitor of HSP90and MAO A with the IC50 values of 0.016 and 4.58 μM, respectively. MAO A/HSP90-IN-2 increases HSP70 expression and reduces HER2 and phospho-Akt expression, and decreases IFN-γ induced PD-L1 expression in GL26 cells. MAO A/HSP90-IN-2 inhibits the growth of Temozolomide (HY-17364) -sensitive and -resistant GBM cells, colon cancer, leukemia, non-small cell lung and other cancers, and has potential to inhibit tumor immune escape[1].
    MAO A/HSP90-IN-2
  • HY-111016
    LJP 1586
    		Inhibitor
    LJP 1586 is an amine-based inhibitor of semicarbazide-sensitive amine oxidase (SSAO) activity. LJP 1586 is an orally active, potent and selective inhibitor of rodent and human SSAO activity, with IC50 values between 4 and 43 nM.
    LJP 1586
  • HY-115987
    MAO-B-IN-6
    		Inhibitor
    MAO-B-IN-6 is a potent, selective and orally active MAO-B inhibitor with an IC50 of 0.019 µM. MAO-B-IN-6 shows more efficacious than Safinamide in vitro and in vivo. MAO-B-IN-6 has the potential for the research of parkinson's disease (PD).
    MAO-B-IN-6
  • HY-161674
    Monoamine Oxidase B inhibitor 4
    		Inhibitor
    Monoamine Oxidase B inhibitor 4 (compound 1l) is a selective inhibitor of human monoamine oxidase-B (hMAO-B) (IC50=8.3 nM). Monoamine Oxidase B inhibitor 4 also has anti-neuroinflammatory and low neurotoxicity. Monoamine Oxidase B inhibitor 4 can inhibit the release of NO, TNF-α and IL-1β stimulated by LPS and Aβ1-42, and can also attenuate Aβ(1-42)-induced cytotoxicity.
    Monoamine Oxidase B inhibitor 4
  • HY-130205
    Milacemide hydrochloride
    		Inhibitor
    Milacemide hydrochloride (CP 1552 S), a glycinamide derivative, is an orally active MAO-B inhibitor with anticonvulsant activity. Milacemide hydrochloride reduces the levels of dihydroxyphenylacetic acid and homovanilic acid, but increases the levels of dopamine and serotonin in the caudate nucleus. Milacemide hydrochloride is promising for research of Alzheimer's disease.
    Milacemide hydrochloride
  • HY-161240
    MAO-B-IN-30
    		Inhibitor 98.53%
    MAO-B-IN-30 (compound IS7) is a potent, selective and cross the blood-brain barrier MAO-B inhibitor with IC50 values of 19.176, 0.082 µM for MAO-A and MAO-B, respectively. MAO-B-IN-30 shows antiproliferative activity and non-cytotoxic. MAO-B-IN-30 reduces TNF-alpha, IL-6, NF-kB levels. MAO-B-IN-30 has the potential for the research of Parkinson's disease.
    MAO-B-IN-30
  • HY-176271
    MAO-B-IN-45
    		Inhibitor
    MAO-B-IN-45 is a dual inhibitor of ferroptosis and MAO-B. MAO-B-IN-45 shows selectivity towards MAO-B with an IC50 of 87.47 nM and selectivity exceeding 229-fold for MAO-B over MAO-A. MAO-B-IN-45 has excellent antiferroptosis activity through modulation of the iron metabolic pathway and GSH-GPX4 axis in vitro. MAO-B-IN-45 improves cognitive and behavioral impairments in 3×Tg (APP/Tau/Ps1) AD mouse and significantly reduced the levels of ferritin heavy chain 1 (FTH1), APP, and Tau phosphorylation (p-Tau) proteins in the brain.
    MAO-B-IN-45
  • HY-143330
    MAO-B-IN-4
    		Inhibitor
    MAO-B-IN-4 (Compound 26) is an orally active and reversible MAO-B inhibitor with an IC50 of 9 nM. MAO-B-IN-4 has good metabolic stability, safety profile and brain permeability. MAO-B-IN-4 shows antidepressant activity in rats and mice. MAO-B-IN-4 can be used in studies related to Alzheimer's disease.
    MAO-B-IN-4
  • HY-162573
    Monoamine Oxidase B inhibitor 5
    		Inhibitor
    Monoamine Oxidase B inhibitor 5 (Compound 16d) is a selective and reversible inhibitor for monoamine oxidase B (hMAO-B) with an IC50 of 67.3 nM and a Ki of 82.5 nM. Monoamine Oxidase B inhibitor 5 exhibits good pharmacokinetic characters and weak toxicity in rats model. Monoamine Oxidase B inhibitor 5 alleviates MPTP-induced (HY-15608) motor impairment in Parkinson’s mouse model. Monoamine Oxidase B inhibitor 5 is blood-brain barrier (BBB) penetrate.
    Monoamine Oxidase B inhibitor 5
  • HY-149408
    MAOA-IN-1
    		Inhibitor
    MAOA-IN-1 (compound 15) is an orally active MAOA inhibitor with cytotoxicity against prostate cancer cells. MAOA-IN-1 has Caco-2 permeability and lower CNS permeability. MAOA-IN-1 can be further used in the research of anti-cancer and anti-inflammatory indications.
    MAOA-IN-1
  • HY-119395
    Kynuramine
    Kynuramine is an endogenous amine that serves as a fluorescent substrate and probe for plasma amine oxidase.
    Kynuramine
  • HY-70057S1
    Safinamide-d4-1
    		Inhibitor
    Safinamide-d4-1 is deuterium labeled Safinamide. Safinamide is a potent, selective, and reversible monoamine oxidase B (MAO-B) inhibitor (IC50=0.098 μM) over MAO-A (IC50=580 μM). Safinamide also blocks sodium channels and modulates glutamate (Glu) release, showing a greater affinity at depolarized (IC50=8?μM) than at resting (IC50=262?μM) potentials. Safinamide has neuroprotective and neurorescuing effects and can be used for the study of parkinson disease, ischemia stroke etc.al.
    Safinamide-d<sub>4</sub>-1
  • HY-163618
    DHMQ
    DHMQ is a NIR fluorescent probe that binds to the propylamino group of monoamine oxidase A (MAO-A). DHMQ tracks MAO-A activity in real-time by using fluorescence imaging on mice and cells.
    DHMQ
  • HY-170798
    Monoamine Oxidase B inhibitor 6
    		Inhibitor
    Monoamine Oxidase B inhibitor 6 (Compound BT5) is a BBB-penetrable, highly selective, reversible and competitive MAO-B inhibitor, with an IC50 of 0.11 μM. Monoamine Oxidase B inhibitor 6 has antioxidant and neuroprotective effects and can be used in the research of neurodegenerative diseases.
    Monoamine Oxidase B inhibitor 6
Cat. No. Product Name / Synonyms Application Reactivity
Monoamine Oxidase Isoform Comparison

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