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-174419
    TFSeB
    		Inhibitor
    TFSeB is an orally active neuroprotective agent. TFSeB can reduce Streptozotocin (STZ) (HY-13753) induced MAO-B and AChE activity. TFSeB exerts neuroprotective effects by increasing the expression of BCL-2, BDNF, NRF2, and decreasing the expression of BAX. TFSeB can reduce lipid peroxidation (TBARS) and reactive oxygen species (ROS) levels. TFSeB can reduce neuroinflammation. TFSeB can be used for research on Alzheimer’s disease.
    TFSeB
  • HY-139647
    (+)-Cinchonaminone
    		Inhibitor
    (+)-Cinchonaminone shows monoamine oxidase (MAO) inhibitory activity.
    (+)-Cinchonaminone
  • HY-155123
    Antioxidant agent-13
    		Inhibitor
    Antioxidant agent-13 (Compound 5f) is an antioxidant agent. Antioxidant agent-13 inhibits DPPH and FRAP with IC50s of 80.33 and 85.69 μM. Antioxidant agent-13 also inhibits LOX and XO enzymes with IC50s of 16.85 and 23.01 μM.
    Antioxidant agent-13
  • HY-172461
    MAO-IN-6
    		Inhibitor
    MAO-IN-6 (Compound 3f) is a BBB permeable and reversible MAO-B inhibitor with an IC50 of 0.09 μM. MAO-IN-6 also exhibits certain inhibitory activities against AChE and BChE, with IC50 values of 4.48 μM and 17.03 μM, respectively. MAO-IN-6 has low cytotoxicity and can be used in the research of Alzheimer's disease.
    MAO-IN-6
  • HY-152109
    AChE/MAO-IN-1
    		Inhibitor
    AChE/MAO-IN-1 (Compound D28) is a potent AChE, MAO-A and MAO-B inhibitor with IC50s of 0.0248, 0.0409 and 0.1108 μM against human AChE, MAO-B and MAO-A, respectively.
    AChE/MAO-IN-1
  • HY-179126
    BChE/MAO-A-IN-1
    		Inhibitor
    BChE/MAO-A-IN-1 (compound 7j) is a BChE/MAO-A inhibitor. BChE/MAO-A-IN-1 exhibits inhibitory activity against BChE (IC50 = 0.03 nM) and MAO-A (IC50 = 0.32 nM), while also having inhibitory effects on MAO-B. BChE/MAO-A-IN-1 has good anti glycation, antioxidant activity, and low cytotoxicity. BChE/MAO-A-IN-1 can be used in the research of diabetes and Alzheimer's disease.
    BChE/MAO-A-IN-1
  • HY-162061
    ChEs/MAOs-IN-1
    		Inhibitor
    ChEs/MAOs-IN-1 (Compound 4i) is a dual inhibitor of cholinesterases (ChEs) and monoamine oxidases (MAOs).ChEs/MAOs-IN-1 has IC50 values of 0.048 μM, 0.89 μM, 3.58 μM, and 0.095 μM for AChE, BChE, MAO-B and MAO-B respectively. ChEs/MAOs-IN-1 can be used in the study of neurodegenerative diseases.
    ChEs/MAOs-IN-1
  • HY-146691
    hMAO-B-IN-2
    		Inhibitor
    hMAO-B-IN-2 (compound 6j) is an orally active, potent, selective and BBB penetrated and competitive reversible hMAO-B inhibitor, with an IC50 of 4 nM. hMAO-B-IN-2 shows low toxicity and good neuroprotective effects in SH-SY5Y cell. hMAO-B-IN-2 can be used for alzheimer’s disease research. hMAO-B-IN-2 is a click chemistry reagent, itcontains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    hMAO-B-IN-2
  • HY-151208
    MAO-B-IN-16
    		Inhibitor
    MAO-B-IN-16 is a selective monoamine oxidase B (MAO-B) inhibitor, with an IC50 of 1.55 µM. MAO-B-IN-16 can be used in the study of central nervous disorders, such as parkinson's disease.
    MAO-B-IN-16
  • HY-N8315
    Echitovenidine
    		Inhibitor
    Echitovenidine is an alkaloid that can be isolated from Alstonia yunnanensis. Echitovenidine is an inhibitor of monoamine oxidase (MAO).
    Echitovenidine
  • HY-175524
    BChE/MAO-B-IN-2
    		Inhibitor
    BChE/MAO-B-IN-2 is a dual inhibitor of BChE (IC50 = 0.05 μM, Ki = 0.01 μM) and MAO-B (IC50 = 0.45 μM, Ki = 0.08 μM) with good blood-brain barrier permeability. BChE/MAO-B-IN-2 exhibits antioxidant activity, including DPPH radical scavenging, CUPRAC copper ion reduction, and superoxide anion scavenging. BChE/MAO-B-IN-2 can be used for the study of Alzheimer's disease (AD).
    BChE/MAO-B-IN-2
  • HY-N1638
    1-Methyl-2-undecyl-4(1H)-quinolone
    		Inhibitor
    1-Methyl-2-undecyl-4(1H)-quinolone is a potent, irreversible and selective inhibitor of type B monoamine oxidase (MAO-B). 1-Methyl-2-undecyl-4(1H)-quinolone shows a selective inhibition of MAO-B activity with the IC50 and Ki values of 15.3 μM and 9.91 μM, respectively, but did not inhibit type A MAO (MAO-A) activity. Methyl-2-undecyl-4(1H)-quinolone, as a quinolone alkaloid, is isolated from fresh leaves and fruits of Evodia rutaecarpa HOOK. f. et THOMS.
    1-Methyl-2-undecyl-4(1H)-quinolone
  • HY-149515
    MAO-IN-3
    		Inhibitor
    MAO-IN-3 (Compound 5) is a reversible and competitive MAO inhibitor (Ki: 0.6 and 0.2 μM for MAO A and MAO B). MAO-IN-3 inhibits LN-229 glioblastoma cell proliferation with an IC50 of 0.8 μM. MAO-IN-3 can be used for cancer research.
    MAO-IN-3
  • HY-183798
    BChE/MAO-B-IN-6
    		Inhibitor
    BChE/MAO-B-IN-6 is a dual inhibitor with inhibitory activity against both butyrylcholinesterase (BChE) and monoamine oxidase B (MAO B), with an IC50 of 557 nM against BChE and an IC50 of 142 nM against MAO B. BChE/MAO-B-IN-6 reduces IL-6 release from stimulated microglia and antagonizes 6-hydroxydopamine (HY-B1081) toxicity in neuroblastoma cells. BChE/MAO-B-IN-6 can be used in the research of neurodegenerative diseases.
    BChE/MAO-B-IN-6
  • HY-144756
    LSD1-IN-15
    		Inhibitor
    LSD1-IN-15 (compound 1b) is a potent LSD1 inhibitor. LSD1-IN-15 can inhibit LSD1-CoREST, MAO-A and MAO-B, with IC50 values of 0.149, 0.028, and 0.327 μM, respectively. LSD1-IN-15 displays cell growth arrest in prostate cancer LNCaP cells, with an IC50 of 9.9 μM.
    LSD1-IN-15
  • HY-157089
    AChE/MAO-B-IN-5
    		Inhibitor
    AChE/MAO-B-IN-5 is a dual inhibitor of AChE and MAO-B. AChE/MAO-B-IN-5 can used in study Alzheimer’s disease.
    AChE/MAO-B-IN-5
  • HY-155137
    CHBO4
    CHBO4 is a potent, reversible, competitive, and selective hMAO-B inhibitor with an IC50 value of 0.031 μM in CHBO subseries and an Ki value of 0.010 ± 0.005 μM. CHBO4 reduce cell damage by scavenging intracellular reactive oxygen species (ROS). CHBO4 can be used for Parkinson's Disease (PD) research.
    CHBO4
  • HY-146762
    MAO-B-IN-7
    		Inhibitor
    MAO-B-IN-7 is a potent and blood-brain barrier permeable MAO-B and AChE inhibitor with IC50s of 41 nM, 87 nM and 0.3 μM for human AChE, electric eel AChE and MAO-B, respectively. MAO-B-IN-7 can effectively alleviate oxidative stress and neuroinflammatory damage.
    MAO-B-IN-7
  • HY-131660
    MAO-B-IN-54
    		Inhibitor
    MAO-B-IN-54 is a selective, reversible and competitiv monoamine oxidase B (MAOB) inhibitor with a human IC50 of 0.052 μM and a Ki of 0.028 μM. MAO-B-IN-54 shows weak activity MAOA. MAO-B-IN-54 occupies both the entrance and substrate cavity of MAOB, forming hydrophobic and hydrogen bonding interactions. MAO-B-IN-54 inhibits Aβ aggregation and ROS production. MAO-B-IN-54 can be used for the research of Alzheimer’s disease.
    MAO-B-IN-54
  • HY-184026
    MAO-B-IN-58
    		Inhibitor
    MAO-B-IN-58 (Compound 2e) is a reversible, selective MAO-B inhibitor with an IC50 of 170 nM against rat MAO-B. MAO-B-IN-58 is applicable for the research of Parkinson's disease and Alzheimer's disease.
    MAO-B-IN-58
Cat. No. Product Name / Synonyms Application Reactivity
Monoamine Oxidase Isoform Comparison

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