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-114203
    Eckol
    		Inhibitor
    Eckol is a potent hMAO-A (Mixed) and hMAO-B (non-competitive) inhibitor with IC50s of 7.20 and 83.44 μM, respectively. Eckol shows stimulatory effects in maize and can be used as a plant biostimulant. Eckol also shows antiallergic and antiviral effects.
    Eckol
  • HY-158695
    Dual AChE-MAO B-IN-4
    		Inhibitor
    Dual AChE-MAO B-IN-4 (compound 7) is a dual AChE/MAO-B inhibitor, with IC50 values ​​of 261 nM and 15 nM, respectively. Dual AChE-MAO B-IN-4 protects against oxidative damage induced by H2O2 and 6-OHDA in SH-SY5Y cells. Dual AChE-MAO B-IN-4 can penetrate the central nervous system in a cell model that mimics the blood-brain barrier. Dual AChE-MAO B-IN-4 can be used in the study of neurological diseases such as Alzheimer's disease (AD).
    Dual AChE-MAO B-IN-4
  • HY-B0534S
    Moclobemide-d8
    		Inhibitor
    Moclobemide-d8 (Ro111163-d8) is the deuterium labeled Moclobemide. Moclobemide (Ro111163) is a brain-penetrant and reversible monoamine oxidase (MAO-A) inhibitor with an IC50 of 6.061 μM for hMAO-A.Moclobemide up-regulates proliferation of hippocampal progenitor cells in chronically stressed mice.
    Moclobemide-d<sub>8</sub>
  • HY-144757
    LSD1-IN-16
    		Inhibitor
    LSD1-IN-16 (compound 4b) is a potent LSD1 inhibitor. LSD1-IN-16 can inhibit LSD1-CoREST, MAO-A and MAO-B, with IC50 values of 0.015, 0.024, and 0.366 μM, respectively. LSD1-IN-16 displays cell growth arrest in prostate cancer LNCaP cells, with an IC50 of 15.2 μM.
    LSD1-IN-16
  • HY-114915
    PSB-1434
    		Inhibitor 98.05%
    PSB-1434 is a selective monoamine oxidase B (MAO-B) inhibitor with an IC50 of 1.59 nM. PSB-1434 shows >6000-fold selective for MAO-B than MAO-A.
    PSB-1434
  • 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
Cat. No. Product Name / Synonyms Application Reactivity
Monoamine Oxidase Isoform Comparison

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