Date published: 2025-10-25

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MAO-A Inhibitors

MAO-A inhibitors are a class of chemical compounds that specifically inhibit the activity of the enzyme monoamine oxidase A (MAO-A). Monoamine oxidase A is one of the two isoforms of the enzyme monoamine oxidase, the other being MAO-B. These enzymes are located within the outer mitochondrial membrane and are responsible for the oxidative deamination of monoamine neurotransmitters such as serotonin, norepinephrine, and dopamine, as well as dietary amines. By inhibiting MAO-A, these compounds prevent the breakdown of these monoamines, affecting their concentration within the neural synapse. MAO-A inhibitors are characterized by their ability to bind to the active site of the enzyme, where they interfere with the enzymes ability to access its natural substrates. This inhibition can be reversible or irreversible, depending on the chemical nature of the inhibitor and its interaction with the enzyme. Reversible inhibitors generally form non-covalent bonds with MAO-A, allowing them to dissociate from the enzyme over time, whereas irreversible inhibitors typically form covalent bonds that permanently inactivate the enzyme molecule.The structure-activity relationship of MAO-A inhibitors is a critical aspect of their chemical design. These inhibitors often contain a basic nitrogen atom that mimics the natural substrates of the enzyme, allowing them to associate with the active site of MAO-A. In addition, they may possess various functional groups that enable them to interact with the enzyme's active site through hydrogen bonding, van der Waals forces, and hydrophobic interactions. The specificity of these inhibitors for MAO-A over MAO-B is influenced by the size and shape of their molecular structure, which must complement the substrate cavity of MAO-A. The design of selective MAO-A inhibitors requires a detailed understanding of the topography of the enzyme's active site and the dynamic process of enzyme-substrate interaction.

Items 1 to 10 of 24 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Quinacrine, Dihydrochloride

69-05-6sc-204222
sc-204222B
sc-204222A
sc-204222C
sc-204222D
100 mg
1 g
5 g
200 g
300 g
$45.00
$56.00
$85.00
$3193.00
$4726.00
4
(2)

Quinacrine, Dihydrochloride acts as a monoamine oxidase A (MAO-A) inhibitor by forming specific interactions with the enzyme's active site. Its unique aromatic structure allows for π-π stacking and van der Waals forces, facilitating a stable binding conformation. This compound also influences the enzyme's catalytic efficiency by altering the electron distribution within its molecular framework, thereby affecting substrate accessibility and reaction dynamics.

Pirlindole mesylate

60762-57-4sc-203664
sc-203664A
10 mg
50 mg
$149.00
$617.00
2
(1)

Pirlindole mesylate functions as a monoamine oxidase A (MAO-A) inhibitor through its distinctive molecular architecture, which promotes hydrophobic interactions and hydrogen bonding with the enzyme. This compound's ability to modulate the enzyme's conformational dynamics enhances its binding affinity, leading to altered kinetic parameters. Additionally, its specific stereochemistry may influence the spatial orientation of substrates, further impacting enzymatic activity and metabolic pathways.

cis-Resveratrol Solution (in Ethanol)

61434-67-1sc-205254
sc-205254A
5 mg
10 mg
$120.00
$228.00
2
(1)

Cis-Resveratrol Solution in Ethanol exhibits unique interactions with monoamine oxidase A (MAO-A) due to its planar structure and hydroxyl groups, which facilitate strong hydrogen bonding and π-π stacking with the enzyme. This compound's ability to stabilize enzyme-substrate complexes alters reaction kinetics, enhancing selectivity. Its solubility in ethanol allows for effective diffusion, potentially influencing the enzyme's local microenvironment and catalytic efficiency.

Quinacrine Dihydrochloride Dihydrate

6151-30-0sc-391946B
sc-391946C
sc-391946
sc-391946A
1 g
5 g
10 g
25 g
$42.00
$84.00
$161.00
$338.00
1
(0)

Quinacrine Dihydrochloride Dihydrate demonstrates intriguing interactions with monoamine oxidase A (MAO-A) through its unique heterocyclic structure, which allows for specific electrostatic interactions and conformational flexibility. This compound can modulate the enzyme's active site dynamics, potentially affecting substrate accessibility and turnover rates. Its crystalline form contributes to stability, while its hydrophilic nature enhances solubility in aqueous environments, influencing its reactivity and interaction profiles.

Harmine

442-51-3sc-202644
sc-202644A
sc-202644B
sc-202644C
sc-202644D
sc-202644E
sc-202644F
250 mg
500 mg
1 g
10 g
50 g
100 g
500 g
$52.00
$102.00
$124.00
$540.00
$1438.00
$2560.00
$11230.00
2
(2)

Harmine demonstrates a unique affinity for monoamine oxidase A (MAO-A) through its intricate molecular structure, which allows for specific interactions at the enzyme's active site. The compound's planar configuration enables π-π stacking with aromatic residues, enhancing binding stability. Furthermore, its capacity to engage in electrostatic interactions can modulate enzyme activity, while its lipophilic characteristics facilitate membrane permeability, influencing its kinetic profile in metabolic pathways.

Bifemelane hydrochloride

62232-46-6sc-203529
sc-203529A
10 mg
50 mg
$280.00
$800.00
(0)

Bifemelane hydrochloride exhibits distinctive interactions with monoamine oxidase A (MAO-A) due to its unique structural features, which facilitate selective binding to the enzyme's active site. This compound's ability to form hydrogen bonds and hydrophobic interactions can alter the enzyme's conformation, impacting its catalytic efficiency. Additionally, its ionic nature enhances solubility, promoting effective diffusion in biological systems and influencing its kinetic behavior in enzymatic reactions.

trans 2-Phenylcyclopropylamine Hydrochloride

1986-47-6sc-208452
sc-208452A
250 mg
1 g
$56.00
$163.00
1
(0)

Trans 2-Phenylcyclopropylamine Hydrochloride exhibits a distinctive interaction with monoamine oxidase A (MAO-A) due to its cyclopropyl moiety, which introduces strain and flexibility in the molecular framework. This strain enhances the compound's ability to fit into the enzyme's active site, promoting effective binding. Additionally, the presence of the phenyl group allows for hydrophobic interactions, potentially influencing the enzyme's conformational dynamics and reaction kinetics, thereby affecting substrate turnover rates.

Isocarboxazid

59-63-2sc-218606
100 mg
$330.00
1
(0)

Isocarboxazid is a non-selective, irreversible MAO inhibitor. It forms a covalent bond with the enzyme′s active site, blocking the breakdown of various monoamine neurotransmitters.

Coptisin chloride

6020-18-4sc-281638
10 mg
$459.00
(0)

Coptisin chloride demonstrates a unique affinity for monoamine oxidase A (MAO-A) through its specific structural features, which facilitate strong electrostatic interactions with the enzyme's active site. The presence of halogen atoms enhances its reactivity, allowing for rapid formation of enzyme-inhibitor complexes. This compound's distinct electronic properties may also modulate the enzyme's catalytic efficiency, influencing the overall metabolic pathways of monoamines.

cis-Resveratrol

61434-67-1sc-363863
sc-363863A
10 mg
100 mg
$340.00
$2400.00
2
(0)

Cis-Resveratrol exhibits intriguing interactions with monoamine oxidase A (MAO-A) due to its planar structure, which allows for effective π-π stacking with aromatic residues in the enzyme's active site. This compound's hydroxyl groups can form hydrogen bonds, stabilizing the enzyme-inhibitor complex. Additionally, its stereochemistry may influence binding kinetics, potentially altering the enzyme's conformational dynamics and affecting monoamine degradation pathways.