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-181041
    Multitarget AD-IN-5
    		Inhibitor
    Multitarget AD-IN-5 (Compound 20), 9-Aminoacridine (HY-B1422) derivative, is a neuroprotective agent. Multitarget AD-IN-5 shows IC50 values of 0.614, 0.448, 3.73 and 1.55 μM for hAChE, hBChE, hMAO-A and hMAO-B. Multitarget AD-IN-5 can reduce length and diameter of Aβ42 fibers, and decrease the number of fibers per unit area. Multitarget AD-IN-5 can be used for research of Alzheimer's disease.
    Multitarget AD-IN-5
  • HY-145845
    HDAC1/MAO-B-IN-1
    		Inhibitor
    HDAC1/MAO-B-IN-1 is a potent, selective and cross the blood-brain barrier HDAC1/MAO-B inhibitor with IC50 values of 21.4 nM and 99.0 nM for HDAC1 and MAO-B, respectively. HDAC1/MAO-B-IN-1 has the potential for the research of Alzheimer’s disease.
    HDAC1/MAO-B-IN-1
  • HY-143329
    MAO-B-IN-3
    		Inhibitor
    MAO-B-IN-3 is a reversible and selective MAO-B inhibitor (IC50=96 nM). MAO-B-IN-3 also binds to 5-HT6R with Ki value of 696 nM. MAO-B-IN-3 can be used for research of in Alzheimer's disease.
    MAO-B-IN-3
  • HY-117514
    5-LOX-IN-7
    		Inhibitor
    5-LOX-IN-7 (compound 18) is a potent LOX inhibitor. 5-LOX-IN-7 has the potential for the research of inflammatory and allergic diseases and certain cancer.
    5-LOX-IN-7
  • HY-115986
    MAO-B-IN-5
    		Inhibitor
    MAO-B-IN-5 is a potent, selective and orally active MAO-B inhibitor with an IC50 of 0.204 µM. MAO-B-IN-5 has the potential for the research of Parkinson's disease (PD).
    MAO-B-IN-5
  • HY-180783
    AChE/BChE/MAO-A-IN-1
    		Inhibitor
    AChE/BChE/MAO-A-IN-1 (Compound 5c) is a multi-target inhibitor with IC₅₀ values for AChE, BChE, and MAO-A of 78.7, 22.63, and 0.84 μM respectively. AChE/BChE/MAO-A-IN-1 can be used for the research of Alzheimer's disease.
    AChE/BChE/MAO-A-IN-1
  • HY-178149
    MAO-A/B-IN-5
    		Inhibitor
    MAO-A/B-IN-5 is an orally active MAO-A (IC50 = 73.88 μM) and MAO-B (IC50 = 91.08 μM) inhibitor. MAO-A/B-IN-5 reverses Sodium nitroprusside (SNP) (HY-B0564)-induced cerebral lipid peroxidation (IC50 = 130.2 μM) and protein carbonylation (IC50 = 229.8 μM). MAO-A/B-IN-5 shows dose-dependent and time-dependent antidepressant-like efficacy in mice. MAO-A/B-IN-5 can be used for the study of depressive disorder.
    MAO-A/B-IN-5
  • HY-163415
    MAO-IN-5
    		Inhibitor
    MAO-IN-5 (Compound ZINC000016952895) is a monoamine oxidase (MAO) inhibitor. According to the prediction of Swiss ADME, MAO-IN-5 can inhibit the CYP enzyme family, has blood-brain barrier (BBB) permeability, and has a high gastrointestinal absorption rate. MAO-IN-5 can be used in the study of neurological diseases.
    MAO-IN-5
  • HY-157090
    AChE/MAO-B-IN-6
    		Inhibitor
    AChE/MAO-B-IN-6 (compound 3a) is a dual inhibitor of AChE and h-MAO-B with potential to inhibit Alzheimer's disease.
    AChE/MAO-B-IN-6
  • HY-16731
    Sembragiline
    		Inhibitor
    Sembragiline (EVT 302) is a potent, selective and reversible monoamine oxidase B (MAO-B) inhibitor. Sembragiline reduces the metabolism of dopamine and other amine neurotransmitters by inhibiting the activity of the MAO-B enzyme, thereby potentially increasing the concentration of these neurotransmitters in the brain. Inhibition of the MAO-B enzyme also reduces the formation of toxic reactive oxygen species (ROS) that play a role in the pathological process of AD. Sembragiline has good oral activity and blood-brain barrier permeability. Sembragiline can be used in studies of AD, especially in patients with AD who show increased MAO-B activity.
    Sembragiline
  • HY-149978
    LSD1-IN-26
    		Inhibitor
    LSD1-IN-26 (compound 12u) is a potent LSD1 inhibitor, with an IC50 of 25.3 nM. LSD1-IN-26 also inhibits MAO-A (IC50=1234.57 nM) and MAO-B (IC50=3819.27 nM). LSD1-IN-26 significantly induces apoptosis in MGC-803 cells. LSD1-IN-26 can be used for gastric cancer research.
    LSD1-IN-26
  • HY-103477
    MAO-B-IN-51
    		Inhibitor
    MAO-B-IN-51 (Compound 8f) is a selective, blood-brain-barrier permeable, orally active MAO-B inhibitor with an IC50 of 48．9 nM (MDS). MAO-B-IN-51 enhances long-term memory.
    MAO-B-IN-51
  • HY-151885
    Dual AChE-MAO B-IN-3
    		Inhibitor
    Dual AChE-MAO B-IN-3 (compound C10) is a potent dual AChE/MAO-B inhibitior, with IC50 values of 0.58 and 0.41 μM, respectively. Dual AChE-MAO B-IN-3 is a dual-binding inhibitor bound to both the catalytic anionic site and peripheral anionic site of AChE. Dual AChE-MAO B-IN-3 can be used for Alzheimer’s disease (AD) research.
    Dual AChE-MAO B-IN-3
  • HY-143438
    2-PAT
    		Inhibitor
    2-PAT, an analogue of Rasagiline and Selegiline, a reversible MAO-A inhibitor with an IC50 of 0.721 µM. 2-PAT is an inactivator of MAO-B with an IC50 of 14.6 µM. 2-PAT has the potential for Parkinson’s disease and depression research.
    2-PAT
  • HY-162303
    C175-0062
    		Inhibitor
    C175-0062 is a monoamine oxidase B (MAO-B) inhibitor. C175-0062 can be used for the research of neurodegenerative disorders, including Parkinson's disease (PD), Alzheimer’s disease (AD), and amyotrophic lateral sclerosis (ALS).
    C175-0062
  • HY-101392R
    Harmane (Standard)
    		Inhibitor
    Harmane (Standard) is the analytical standard of Harmane. This product is intended for research and analytical applications. Harmane, a β-Carboline alkaloid (BCA), is a potent neurotoxin that causes severe action tremors and psychiatric manifestations. Harmane shows 1000-fold selectivity for I1-Imidazoline receptor (IC50=30 nM) over α2-adrenoceptor (IC50=18 μM). Harmane is also a potent and selective inhibitor of monoamine oxidase (MAO) (IC50s=0.5 and 5 μM for human MAO A/B, respectively). Harmane exhibits comutagenic effect.
    Harmane (Standard)
  • HY-106741
    Bazinaprine
    		Inhibitor
    Bazinaprine (SR 95191), a derivative of Minaprine (HY-B0884), is an orally active inhibitor of type A monoamine oxidase (MAO). Bazinaprine can be used for research of depression.
    Bazinaprine
  • HY-12723R
    Apomorphine (Standard)
    		Inhibitor
    Apomorphine ((-)-Apomorphine) (Standard) is the analytical standard of Apomorphine (HY-12723). This product is intended for research and analytical applications. Apomorphine is a potent dopamine receptor agonist. Apomorphine also inhibit MAO-A and MAO-B. Apomorphine exerts neuroprotective effect and can relax rat corpus cavernosum. Apomorphine can inhibit ROS production, DNA fragmentation and inibit JNK and ERK1/2 phosphorylation. Apomorphine can enhance degradation of intracellular Aβ40 and Aβ42, reduces tau protein levels and inhibit MMP-9 expression. Apomorphine is a highly potent radical scavenger and iron chelator. Apomorphine can be used for the researches of dementia, parkinson's disease, alzheimer disease, breast carcinoma, and erectile dysfunction.
    Apomorphine (Standard)
  • HY-162830
    5-LOX/MAOs-IN-1
    		Inhibitor
    5-LOX/MAOs-IN-1 (compound 3) is a 5-LOX/MAOs inhibitor and a potent free radical scavenger with antioxidant properties. 5-LOX/MAOs-IN-1 also showed neuroprotective activity in oxidative stress-damaged cell models and can activate the neurogenesis microenvironment of adult mouse neural stem cells. 5-LOX/MAOs-IN-1 can be used for the study of neurodegenerative diseases.
    5-LOX/MAOs-IN-1
  • HY-163031
    MAO-B-IN-28
    		Inhibitor
    MAO-B-IN-28 (compound 10e) is a potent hMAO-B inhibitor with an IC50 of 1.9±0.5 nM. MAO-B-IN-28 can be used as a candidate for neurodegenerative diseases research.
    MAO-B-IN-28
Cat. No. Product Name / Synonyms Application Reactivity
Monoamine Oxidase Isoform Comparison

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