1. Signaling Pathways
  2. Neuronal Signaling
  3. Monoamine Oxidase

Monoamine Oxidase

MAO

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.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-D0004R
    Azure B (Standard)
    Inhibitor
    Azure B (Standard) is the analytical standard of Azure B. This product is intended for research and analytical applications. Azure B is a cationic dye and the major metabolite of Methylene blue. Azure B is used in making Azure eosin stains for blood smear staining. Azure B is a high-potency, selective and reversible inhibitor of monoamine oxidases (MAO)-A, with IC50s of 11 and 968 nM for recombinant human MAO-A and MAO-B, respectively. Azure B possesses significant antidepressant-like effects.
    Azure B (Standard)
  • HY-108048
    Desoxypeganine
    Inhibitor
    Desoxypeganine (Deoxypeganine), an alkaloid, is a potent and orally active cholinesterase (BChE and AChE) and selective MAO-A inhibitor, with IC50 values of 2, 17, and 2 μM, respectively. Desoxypeganine can be used for alcohol abuse research.
    Desoxypeganine
  • 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-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-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-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
  • HY-149527
    MAO-B-IN-23
    Inhibitor
    MAO-B-IN-23 (Compound 11f) is a reversible and competitive MAO-B inhibitor (IC50: 1.44 μM, Ki: 0.51 μM).
    MAO-B-IN-23
  • HY-B1111S
    Amitraz-d6
    Inhibitor
    Amitraz-d6 (BTS-27419-d6) is the deuterium labeled Amitraz. Amitraz is a non-systemic acaricide and insecticide, with alpha-adrenergic agonist activity, interaction with octopamine receptors of the central nervous system and inhibition of monoamine oxidases and prostaglandin synthesis.
    Amitraz-d<sub>6</sub>
  • HY-W207699
    MAO-B-IN-46
    Inhibitor
    MAO-B-IN-46 (Compound 16) is a selective hMAO-B inhibitor (IC50: 26.8 nM), with weak activity against hMAO-A (IC50: 7.2054 μM). MAO-B-IN-46 (Compound 8) also acts as an α-amylase inhibitor (IC50: 19.46 μM). MAO-B-IN-46 exhibits certain neuroprotective effects and shows no significant toxicity to human gingival fibroblasts and SH-SY5Y cells. Additionally, MAO-B-IN-46 can scavenge DPPH and ABTS free radicals, with IC50 values of 17.86 μM and 17.71 μM, respectively. MAO-B-IN-46 can be used in the research of neurodegenerative diseases such as Parkinson's disease, diabetes, and diseases related to oxidative stress resistance.
    MAO-B-IN-46
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