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-158696
    BChE/MAO-B-IN-1
    		Inhibitor
    BChE/MAO-B-IN-1 (compound 7) is a dual BChE/MAO-B inhibitor with IC50 values ​​of 375 nM and 20 nM, respectively. BChE/MAO-B-IN-1 protects against oxidative damage induced by H2O2 and 6-OHDA in SH-SY5Y cells. BChE/MAO-B-IN-1 can penetrate the central nervous system in a cell model that mimics the blood-brain barrier. BChE/MAO-B-IN-1 can be used in the study of neurological diseases such as Alzheimer's disease (AD).
    BChE/MAO-B-IN-1
  • HY-170938
    AChE-IN-82
    		Inhibitor
    AChE-IN-82 (compound 49) is an acetylcholinesterase (AChE) inhibitor. AChE-IN-82 inhibits eeAChE, eqBChE, hMAO-A, hMAO-B, and BACE-1 with IC50s of 0.072, 9.81, 14.52, 0.024, 2.42 μM, respectively. AChE-IN-82 inhibits COX-1, COX-2 and 5-LOX with IC50s of 60.41, 0.187, 0.18 μM, respectively. AChE-IN-82 shows an excellent neuroprotective effect by significantly reducing oxidative stress induced by H2 O2.
    AChE-IN-82
  • HY-17447SA
    Tranylcypromine-d5 hydrochloride
    		Inhibitor
    Tranylcypromine-d5 (hydrochloride) is a deuterium labeled (rel)-Tranylcypromine hydrochloride. Tranylcypromine hydrochloride is an irreversible, nonselective monoamine oxidase (MAO) inhibitor used in the treatment of depression. Tranylcypromine hydrochloride is also a lysine-specific demethylase 1 (LSD1) inhibitor, suppresses lesion growth and improves generalized hyperalgesia in mouse with induced endometriosis.
    Tranylcypromine-d<sub>5</sub> hydrochloride
  • HY-155330A
    PZ-1922 free base
    		Inhibitor
    PZ-1922 free base is a BBB-penetrable 5-HT6R/5-HT3R antagonist (Ki: 17 nM, 0.45 nM for 5-HT6R/5-HT3R respectively). PZ-1922 free base reversibly inhibits MAO-B (pIC50: 8.93). PZ-1922 free base reverses Scopolamine (SCOP) (HY-N0296) induced memory deficits in the novel object recognition (NOR) test in rats. PZ-1922 free base prevents Aβ-induced memory decline in the T-maze test.
    PZ-1922 free base
  • HY-W010130R
    7-Hydroxy-3,4-dihydro-2(1H)-quinolinone (Standard)
    		Inhibitor
    7-Hydroxy-3,4-dihydro-2(1H)-quinolinone (Standard) is the analytical standard of 7-Hydroxy-3,4-dihydro-2(1H)-quinolinone. This product is intended for research and analytical applications. 7-?Hydroxy-?3,?4-?dihydro-?2(1H)?-?quinolinone (3,4-Dihydro-7-hydroxy-2(1H)-quinolinone) is a weak MAO-A inhibitor, with an IC50 of 183 μM, and has no effect on MAO-B.
    7-Hydroxy-3,4-dihydro-2(1H)-quinolinone (Standard)
  • HY-176245
    Illudinine
    		Inhibitor
    Illudinine, a sesquiterpenoid alkaloid, is a monoamine oxidase B (MAO-B) inhibitor with an IC50 of 18.3 μM. Illudinine can be used for research on neurological diseases.
    Illudinine
  • HY-146677
    5-HT6R/MAO-B modulator 1
    		Inhibitor
    5-HT6R/MAO-B modulator 1 (compound 48) is an antagonist of 5-HT6R at Gs signaling and an irreversible MAO-B inhibitor. 5-HT6R/MAO-B modulator 1 exhibits glioprotective properties. 5-HT6R/MAO-B modulator 1 can reverse Scopolamine-induced memory deficits. 5-HT6R/MAO-B modulator 1 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    5-HT6R/MAO-B modulator 1
  • HY-168169
    hMAO-B-IN-10
    		Inhibitor
    hMAO-B-IN-10 (compound 7) is an inhibitor of MAO-A/B with IC50 of 424.1 nM and 177.9 nM, respectively. hMAO-B-IN-10 exerts a certain neuroprotective effect in MPTP (HY-15608)-induced mouse PD model..
    hMAO-B-IN-10
  • HY-173336
    MAO-B-IN-42
    		Inhibitor
    MAO-B-IN-42 (Compound 4f) is a selective and reversible inhibitor of monoamine oxidase-B (MAO-B) with an IC50 value of 0.184 μM. MAO-B-IN-42 helps maintain the levels of neurotransmitters by blocking the oxidative deamination of monoamines catalyzed by MAO-B. MAO-B-IN-42 is promising for research of Parkinson's disease.
    MAO-B-IN-42
  • HY-154977
    ETAP
    		Inhibitor
    ETAP is a MAO-A and MAO-B inhibitor. ETAP has antidepressant-like effect. ETAP can be used for research of major depressive disorder.
    ETAP
  • HY-143499
    hMAO-B-IN-3
    hMAO-B-IN-3 (Compound 15) is a potent inhibitor of hMAO-B with an IC50 of 47.4 nM. hMAO-B-IN-3 is playing favourable agent-like properties and a broad safety window. hMAO-B-IN-3 is thus a suitable candidate for lead optimization and the development of multitarget-directed ligands.
    hMAO-B-IN-3
  • HY-159106
    MeSeI
    		Inhibitor
    MeSeI exhibits a weak inhibitory activity against monoamine oxidase MAO-A and MAO-B (IC50=198.8 µM). MeSeI regulates dopamine receptor D2 and norepinephrine receptor α2, β1, and exhibits antidepressant-like effect in mice. MeSeI is orally active.
    MeSeI
  • HY-14855BR
    Tedizolid phosphate (Standard)
    		Inhibitor
    Tedizolid (phosphate) (Standard) is the analytical standard of Tedizolid (phosphate). This product is intended for research and analytical applications. Tedizolid phosphate (TR-701FA) is a MAO-A and MAO-B inhibitor with activity against Gram-positive bacteria[1].
    Tedizolid phosphate (Standard)
  • HY-175523
    MAO-B-IN-48
    		Inhibitor
    MAO-B-IN-48 is a selective MAO-B inhibitor (IC50 = 0.09 μM, Ki = 0.02 μM). MAO-B-IN-48 exhibits inhibitory activity against hBChE (IC50 = 1.10 μM, Ki = 0.43 μM) and AChE (IC50 = 0.56 μM, Ki = 0.14 μM). MAO-B-IN-48 suppresses self-induced aggregation of toxic β-amyloid peptides and exerts antioxidant activity, including DPPH radical scavenging, CUPRAC copper ion reduction, and superoxide anion scavenging. MAO-B-IN-48 can be used for the study of Alzheimer's disease (AD).
    MAO-B-IN-48
  • HY-173138
    FCOB02
    		Ligand
    FCOB02 is a monoamine oxidase B (MAO-B) ligand. FCOB02 can be labeled as [18F]FCOB02, a 4-methylcoumarin-like targeting probe. [18F]FCOB02 has a high affinity for MAO-B with an IC50 of 10.68 nM. [18F]FCOB02 can be used in specific MAO-B imaging as well as quantitative analysis in vivo.
    FCOB02
  • HY-169156
    HDAC6-IN-49
    		Inhibitor
    HDAC6-IN-49 (Compound 3) is an inhibitor for HDAC with IC50 of 0.012 and 0.735 μM for HDAC6 and HDAC1. HDAC6-IN-49 also exhibits inhibitory activities against MAO-B, cholinesterase (ChE), histamine receptor (H3R) and serotonin 6 receptor (5-HT6R). HDAC6-IN-49 exhibits neuroprotective efficacy on SH-SY5Y cell. HDAC6-IN-49 improves cognitive function and locomotor ability in Drosophila Parkinson's disease models and in C. elegans Alzheimer's disease models.
    HDAC6-IN-49
  • HY-155577
    MAO A/HSP90-IN-1
    MAO A/HSP90-IN-1 (4-b) is a MAO A/HSP90 dual inhibitor with IC50 value of 1.77 μM and 0.019 μM in Glioblastoma (GBM) GL26 cells and HSP90α, respectively. MAO A/HSP90-IN-1 (4-b) can inhibit MAO A activity, HSP90 binding and the expression of HER2 and phospho-Akt to inhibit the growth of GBM, they also reduce PD-L1 expression, which inhibits T cell activation. MAO A/HSP90-IN-1 (4-b) have potential to inhibit tumor immune escape. MAO A/HSP90-IN-1 (4-b) can be used for brain tumor-related diseases research.
    MAO A/HSP90-IN-1
  • HY-W015490R
    1,4-Naphthoquinone (Standard)
    		Inhibitor
    1,4-Naphthoquinone is an inhibitor with broad-spectrum inhibitory activity targeting DNA polymerase, NF-κB and monoamine oxidase (MAO-A/B), with antibacterial and anti-biofilm efficacy. 1,4-Naphthoquinone is a competitive inhibitor of MAO-B (Ki=1.4 μM) and a non-competitive inhibitor of MAO-A (Ki=7.7 μM). 1,4-Naphthoquinone inhibits DNA polymerase pol α, β, γ, δ, ε, λ with IC50 ranging from 5.57-128 μM. 1,4-Naphthoquinone inhibits tumor cell proliferation, induces apoptosis and necrosis, and has anti-angiogenic and anti-inflammatory activities by inducing oxidative stress, depleting glutathione (GSH), inhibiting DNA polymerase-mediated DNA synthesis and blocking NF-κB nuclear translocation. 1,4-Naphthoquinone can be used in anti-bacterial , anti-tumor and anti-inflammatory studies, including inhibition of melanoma and colon cancer cell growth and endothelial cell function, as well as LPS-induced inflammation models.
    1,4-Naphthoquinone (Standard)
  • HY-N0918R
    Desmethoxyyangonin (Standard)
    		Inhibitor
    Desmethoxyyangonin (Standard) is one of the six major kavalactones found in the Piper methysticum (kava) plant. Desmethoxyyangonin (Standard) is a selective inhibitor of monoamine oxidase-B (MAO-B) (IC50: 0.123  µM). Desmethoxyyangonin (Standard) exerts anti-inflammatory effects by inhibiting Jak2/STAT3 and IKK signaling pathways. Desmethoxyyangonin (Standard) induces CYP3A23 expression and leads to skeletal muscle relaxation.
    Desmethoxyyangonin (Standard)
  • HY-40294R
    Indazole (Standard)
    		Inhibitor
    Indazole (Standard) is the analytical standard of Indazole. This product is intended for research and analytical applications. Indazole, also called isoindazole, a heterocyclic aromatic organic compound. Its derivatives display a broad variety of biological activities including anti-inflammatory, antibacterial, anti-HIV, antiarrhythmic, antifungal and antitumour properties. Indazole and its derivatives can be used for research of cancer, neurological disorders, cardiovascular diseases, gastrointestinal diseases.
    Indazole (Standard)
Cat. No. Product Name / Synonyms Application Reactivity
Monoamine Oxidase Isoform Comparison

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