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-118407
    LY56110
    		Inhibitor
    LY56110 is an orally active aromatase inhibitor. LY56110 inhibits P-450-dependent p-nitroanisole O-demethylation and ethylmorphine N-demethylation in hepatic microsomes isolated from rat, with the IC50 of 2.5 and 11 μΜ, respectively. LY56110 can be used for neurological disorder study.
    LY56110
  • HY-149611
    Lysyl hydroxylase 2-IN-2
    		Inhibitor
    Lysyl hydroxylase 2-IN-2 (compound 13) is a potent Lysyl hydroxylase 2 (LH2) inhibitor, with the IC50 of approximately 500 nM. Lysyl hydroxylase 2-IN-2 inhibits the migration in 344SQ WT cells, but not impedes the migration of the same cell line with an LH2 knockout cells.
    Lysyl hydroxylase 2-IN-2
  • HY-152671
    hMAO-B-IN-4
    		Inhibitor 99.70%
    hMAO-B-IN-4 (compound B10) is a selective, reversible and blood–brain barrier (BBB) penetrable human monoamine oxidase-B (hMAO-B) inhibitor with an IC50 value and a Ki value of 0.067 and 0.03 μM, respectively. hMAO-B-IN-4 inhibits hMAO-A with an IC50 value of 33.82 μM. hMAO-B-IN-4 can be used for Alzheimer’s disease (AD) and Parkinson’s disease (PD) research.
    hMAO-B-IN-4
  • HY-170573
    LOXL2-IN-1
    		Inhibitor
    LOX-IN-5 (compound 22) is a selective and orally active lysyl oxidase-like 2 (LOXL2) inhibitor with an IC50 of <300 nM. LOX-IN-5 possess anti-fibrosis properties.
    LOXL2-IN-1
  • HY-158732
    MAO-B-IN-33
    		Inhibitor
    MAO-B-IN-33 (compound C3) is a potent, reversible and selective monoamine oxidase-B (MAO-B) inhibitor with an IC50 of 0.021 μM and 26.805 μM for MAO-B and MAO-A, respectively. The selectivity of MAO-B-IN-33 is attributed to the steric clash arising from the residue differences between Phe208 (MAO-A) and Ile199 (MAO-B). MAO-B-IN-33 inhibits cerebral MAO-B activity and alleviates MPTP (HY-15608)-induced dopaminergic neuronal loss in the mouse. MAO-B-IN-33 has the potential for Parkinson's disease research.
    MAO-B-IN-33
  • 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-14536R
    Methylene Blue (Standard)
    		Inhibitor
    Methylene Blue (Standard) is the analytical standard of Methylene Blue. This product is intended for research and analytical applications. Methylene blue (Basic Blue 9) is a guanylyl cyclase (sGC), monoamine oxidase A (MAO-A) and NO synthase (NOS) inhibitor. Methylene blue is a vasopressor and is often used as a dye in several medical procedures. Methylene blue through the nitric oxide syntase/guanylate cyclase signalling pathway to reduce prepulse inhibition. Methylene blue is a REDOX cycling compound and able to cross the blood-brain barrier. Methylene blue is a Tau aggregation inhibitor. Methylene blue reduces cerebral edema, attenuated microglial activation and reduced neuroinflammation.
    Methylene Blue (Standard)
  • 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-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-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
Cat. No. Product Name / Synonyms Application Reactivity
Monoamine Oxidase Isoform Comparison

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