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-119395A
    Kynuramine dihydrobromide
    Chemical
    Kynuramine dihydrobromide, an endogenously occurring amine, is a fluorescent substrate of plasma amine oxidase.
    Kynuramine dihydrobromide
  • HY-173288
    MAO-B-IN-40
    Inhibitor
    MAO-B-IN-40 (3a), a MAOB inhibitor (IC50 = 0.493 μM for hMAOB), demonstrates robust neuroprotective and antioxidant effect. MAO-B-IN-40 (3a) can be used in the research of Parkinson’s disease.
    MAO-B-IN-40
  • HY-158334
    NDs-IN-1
    Inhibitor
    (Neurodegenerative diseases) NDs-IN-1 (Compound 3g) inhibits the activities of key enzymes such as hBACE-1, hAChE and hMAO-B. NDs-IN-1 is a novel non-covalent multi-target inhibitor. NDs-IN-1 is mainly used in the study of neurodegenerative diseases.
    NDs-IN-1
  • HY-172460
    AChE/BChE/MAO-B-IN-5
    Inhibitor
    AChE/BChE/MAO-B-IN-5 is a multitarget inhibitor of cholinesterases (AChE and BChE) and monoamine oxidase MAO-B with blood–brain barrier permeability. It exhibits IC50 values of 0.24 µM, 6.29 µM, and 0.11 µM against AChE, BChE, and MAO-B, respectively. AChE/BChE/MAO-B-IN-5 shows promise for research in the field of neurodegenerative diseases such as Alzheimer's disease.
    AChE/BChE/MAO-B-IN-5
  • HY-157934
    MAO-IN-4
    Inhibitor
    MAO-IN-4 (Compound 2l) is a monoamine oxidase (MAO) inhibitor, with IC50 values of 0.07 and 0.75 μM for MAO-A and MAO-B Enzymes, respectively. MAO-IN-4 can be used for the research of depression and Parkinson’s disease (PD).
    MAO-IN-4
  • HY-172101
    AChE/MAO-B-IN-7
    Inhibitor
    AChE/MAO-B-IN-7 (VAV-8) is a blood-brain permeable dual inhibitor of acetylcholinesterase (AchE) and MAO-B agent. AChE/MAO-B-IN-7 can also inhibit Aβ42 aggregation for use in Alzheimer's disease (AD) research.
    AChE/MAO-B-IN-7
  • HY-129479
    Almoxatone
    Inhibitor
    Almoxatone is an orally effective, long-acting inhibitor of MAO-B.
    Almoxatone
  • HY-W008566R
    Norharmane (Standard)
    Inhibitor
    Norharmane (Standard) is the analytical standard of Norharmane. This product is intended for research and analytical applications. Norharmane (Norharman), a β-carboline alkaloid, is a potent and reversible monoamine oxidase inhibitor, with IC50 values of 6.5 and 4.7 μM for MAO-A and MAO-B, respectively. Norharmane causes antidepressant responses. Norharmane is also a prospective anti-cancer photosensitizer. Norharmane alters polar auxin transport (PAT) by inhibiting PIN2, PIN3 and PIN7 transport proteins, thus causing a significant inhibitory effect on the growth of Arabidopsis thaliana seedlings.
    Norharmane (Standard)
  • HY-17447B
    (1S,2R)-Tranylcypromine hydrochloride
    Inhibitor
    (1S,2R)-Tranylcypromine ((1S,2R)-SKF 385) hydrochloride is a potent antidepressant agent. (1S,2R)-Tranylcypromine hydrochloride can inhibits MAO and LSD1.
    (1S,2R)-Tranylcypromine hydrochloride
  • HY-B1311R
    Proadifen hydrochloride (Standard)
    Inhibitor
    Proadifen (hydrochloride) (Standard) is the analytical standard of Proadifen (hydrochloride). This product is intended for research and analytical applications. Proadifen (SKF-525A) hydrochloride is a non-competitive Cytochrome P450 inhibitor with an IC50 value of 19 μM. Proadifen hydrochloride reduces monoamine oxidase A (MAO-A) activity and reverses the antidepressantlike behavioral effect of Imipramine (HY-B1490A) and Desipramine (HY-B1272A) in rats. Proadifen hydrochloride also reduces N, N-dimethyltryptamine (DMT) metabolism in liver microsomes and inhibits N-demethylationand Acridone (HY-W007771) formation. Proadifen hydrochloride augments Lipopolysaccharide (LPS) (HY-D1056)-induced fever and exacerbates Prostaglandin E2 (PGE2) (HY-101952) levels in the rat. Proadifen hydrochloride is promising for research of metabolism-related deseases, ovarian carcinoma, inflammation and dopamine neurons-related deseases[4].
    Proadifen hydrochloride (Standard)
  • HY-149242
    MAO-B-IN-20
    Inhibitor
    MAO-B-IN-20 (Compound C14) is a potent MAO-B inhibitor with an IC50 of 0.037 μM. MAO-B-IN-20 displays good metabolic stability and brain-blood barrier permeability. MAO-B-IN-20 can be used for the research of Parkinson's disease.
    MAO-B-IN-20
  • HY-149528
    MAO-B-IN-24
    Inhibitor
    MAO-B-IN-24 (compound 11h) is a selective, reversible, competitive inhibitor of MAO-B (IC50: 1.60 μM). MAO-B-IN-24 also inhibited MAO-A (22.42 μM); at 10 μM concentration, it also reduced AChE and BChE activities to 54.58% and 88.43%.
    MAO-B-IN-24
  • HY-14605BS
    Rasagiline-13C3 mesylate racemic
    Inhibitor
    Rasagiline-13C3 (mesylate racemic) is a 13C-labeled Rasagiline mesylate racemic. Rasagiline mesylate racemic is a highly potent selective irreversible mitochondrial monoamine oxidase (MAO) inhibitor. Rasagiline-13C3 (mesylate racemic) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Rasagiline-<sup>13</sup>C<sub>3</sub> mesylate racemic
  • HY-156348
    MAO-B-IN-26
    Inhibitor
    MAO-B-IN-26 (Compound IC9) is a MAO-B and acetylcholinesterase inhibitor. MAO-B-IN-26 protects SH?SY5Y cells against Aβ induced cytotoxicity, morphological changes, ROS generation and membrane damage. MAO-B-IN-26 also inhibits Aβ induced autophagy and apoptosis. MAO-B-IN-26 can be used as a neuroprotective agent against Alzheimer’s disease.
    MAO-B-IN-26
  • HY-Y0882S1
    Hydroxylamine-d3 hydrochloride
    Hydroxylamine-d3 (hydrochloride) is the deuterium labeled Hydroxyamine hydrochloride. Hydroxyamine hydrochloride is a selective monoamine oxidase (MAO) inhibitor used for inhibiting of platelet aggregation. Hydroxyamine hydrochloride is an intermediate of organic synthesis.
    Hydroxylamine-d<sub>3</sub> hydrochloride
  • HY-170487
    MAO-B-IN-38
    Inhibitor
    MAO-B-IN-38 (Compound 6b) is a reversible and competitive MAO-B inhibitor, with IC50 values of 0.03 and 21.46 µM for MAO-B and MAO-A, respectively. MAO-B-IN-38 can be used for the research of neurodegenerative diseases such as Alzheimer’s and Parkinson’s diseases.
    MAO-B-IN-38
  • HY-146315
    AChE/BChE-IN-6
    Inhibitor
    AChE/BChE-IN-6 (compound 22) is a potent dual AChE/BChE inhibitor with IC50 values of 0.809 µM, 2.248 µM and > 100 µM for hBChE, hAChE and hMAO-B, respectively. AChE/BChE-IN-6 penetrates the blood-brain barrier (BBB). AChE/BChE-IN-6 can be used for Alzheimer’s disease (AD) research.
    AChE/BChE-IN-6
  • HY-N1636
    1-Methyl-2-nonyl-4(1H)-quinolone
    Inhibitor
    1-Methyl-2-nonyl-4(1H)-quinolone, a quinolone alkaloid, is a potent and selective MAO-B (monoamine oxidase) inhibitor. 1-Methyl-2-nonyl-4(1H)-quinolone exhibites inhibitory activity on leukotriene biosynthesis, with an IC50 of 12.1 μM.
    1-Methyl-2-nonyl-4(1H)-quinolone
  • HY-168138
    MAO-B-IN-34
    Inhibitor
    MAO-B-IN-34 (compund 3d) is a monoamine oxidase MAO-B inhibitor.
    MAO-B-IN-34
  • HY-151210
    MAO-B-IN-17
    Inhibitor ≥99.0%
    MAO-B-IN-17 is a selective monoamine oxidase B (MAO-B) inhibitor with the IC50 value of 5.08 μM. MAO-B-IN-17 can be used in Parkinson’s disease research.
    MAO-B-IN-17
Cat. No. Product Name / Synonyms Application Reactivity

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