Monoamine Oxidase Inhibitor

Rosmarinic acid is a widespread phenolic ester compound in the plants. Rosmarinic acid inhibits MAO-A, MAO-B and COMT enzymes with IC₅₀s of 50.1, 184.6 and 26.7 μM, respectively.

Tranylcypromine hydrochloride (SKF 385 hydrochloride) is an irreversible inhibitor of lysine-specific demethylase 1 (LSD1/BHC110) and monoamine oxidase (MAO). Tranylcypromine hydrochloride inhibits LSD1, MAO A and MAO B with IC₅₀s of 20.7, 2.3 and 0.95 μM, respectively. Tranylcypromine hydrochloride can be used for the research of depression.

Hydroxylamine hydrochloride is a selective Monoamine oxidase (MAO) inhibitor used for inhibiting of platelet aggregation. Hydroxylamine hydrochloride is an intermediate of nitrogen cycle in aerobic ammonium oxidizers microorganisms, such as ammonium oxidizing bacteria (AOB), ammonium oxidizing archaea (AOA) and complete ammonium oxidizing bacteria (comammox). Hydroxylamine hydrochloride impacts NO and N₂O emissions by aerobic ammonium oxidizers microorganisms and inhibits nitrite oxidizing bacteria (NOB) activity.

Hypericin is a naturally occurring substance found in Hyperlcurn perforatum L. Hypericin is an inhibitor of PKC (protein kinase C), MAO (monoaminoxidase), dopamine-beta-hydroxylase, reverse transcriptase, telomerase and CYP (cytochrome P450). Hypericin shows antitumor, antiviral, antidepressive activities, and can induce apoptosis.

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 is a photosensitizer and redox agent. Methylene blue reduces cerebral edema, attenuated microglial activation and reduced neuroinflammation.

MAO-B-IN-55 (Compound 5c) is a reversible competitive MAO-B inhibitor with an IC₅₀ of 2.9 nM, and it exhibits approximately 2750-fold higher selectivity for MAO-B over MAO-A. MAO-B-IN-55 can be used for the research of Parkinson's disease.

Ro 41-1049 is a highly selective, reversible MAO-A inhibitor. Ro 41-1049 effectively blocks the Quinpirole (HY-B1752)-induced increase in dopamine D2-like receptor density in the nucleus accumbens and alters the pattern of behavioral sensitization, shifting animals' responses from enhanced motor activity to immobile self-directed gaping behavior. Tritium-labeled Ro 41-1049 serves as a high-affinity radioligand, enabling accurate mapping of the distribution and abundance of MAO-A in the central nervous system, peripheral organs, and human brain via quantitative enzyme autoradiography. Ro 41-1049 can be used for basic research on depression and other related diseases.

Selegiline (Deprenyl) hydrochloride is a potent, selective and irreversible inhibitor of MAO-B, with an IC₅₀ of 51 nM. Selegiline hydrochloride exhibits 450-flod selectivity for MAO-B over MAO-A (IC₅₀=23 μM). Selegiline hydrochloride can be used for the research of Parkinson's disease, Alzheimer's disease and major depressive disorder.

Apomorphine ((-)-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.

GSK-LSD1 dihydrochloride is a potent, selective and irreversible lysine specific demethylase 1 (LSD1) inhibitor with an IC₅₀ of 16 nM.

Clorgyline hydrochloride is an irreversible and selective inhibitor of monoamine oxidase A (MAO-A) that is used in scientific research, structurally related to Pargyline (HY-A0091A). Clorgyline hydrochloride has little effect on the amounts of conjugated dopamine (DA) present in superfusate of slices from rat striatum. Clorgyline hydrochloride contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

Phosphatidylcholines, egg are a type of phosphatidylcholine that can be isolated and extracted from eggs, primarily present in egg yolks. As a major phospholipid component of cell membranes, Phosphatidylcholines, egg play a key role in providing nutrition and protection to the body. Phosphatidylcholines, egg can inhibit oxidative stress and neurotoxicity, exerting neuroprotective effects. Additionally, Phosphatidylcholines, egg can suppress the lymphatic absorption of cholesterol in the intestine and are also used in research on intestinal lipid absorption.

Paeonol is an active extraction from the root of Paeonia suffruticosa, Paeonol inhibits MAO-A and MAO-B with IC₅₀ of 54.6 μM and 42.5 μM, respectively.

MDL 72527 is a potent polyamine oxidase (PAO) inhibitor. MDL 72527 shows a lysosomotropic effect. MDL 72527 shows neuroprotective effects.

Tranylcypromine (SKF 385) hemisulfate is an irreversible, nonselective monoamine oxidase (MAO) inhibitor used in the treatment of depression. Tranylcypromine hemisulfate is also a lysine-specific demethylase 1 (LSD1) inhibitor, suppresses lesion growth and improves generalized hyperalgesia in mouse with induced endometriosis. Tranylcypromine has antidepressant effects.

Phenelzine sulfate, an antidepressant agent, is an irreversible and orally active monoamine oxidase (MAO-A and MAO-B) inhibitor. Phenelzine sulfate inhibits GABA transaminase and primary amine oxidase (PrAO), and sequester reactive aldehydes. Phenelzine sulfate also inhibits LSD1 (Ki: 5.6 μM) and suppresses oxidative stress and lipogenesis. Phenelzine sulfate elevates neurotransmitters (serotonin, norepinephrine, dopamine). Phenelzine sulfate is studied in neurological, metabolic and cancer diseases for depression and anxiety disorders, stroke, spinal cord injury, traumatic brain injury, multiple sclerosis, Parkinson’s disease, Alzheimer’s disease, inflammatory pain, obesity and prostate cancer.

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.

PXS-5505 free base (LOX-IN-3) is an orally active lysyl oxidase (LOX) inhibitor. PXS-5505 free base can be used for fibrosis, cancer and angiogenesis research.

Pargyline is an irreversible monoamine oxidase (MAO) inhibitor with K_is of 13 μM and 0.5 μM for MAO-A and MAO-B, respectively. Pargyline has antihypertensive and anticancer activities. Pargyline is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

Safinamide is a potent, selective, and reversible monoamine oxidase B (MAO-B) inhibitor (IC₅₀=0.098 μM) over MAO-A (IC₅₀=580 μM). Safinamide also blocks sodium channels and modulates glutamate (Glu) release, showing a greater affinity at depolarized (IC₅₀=8 μM) than at resting (IC₅₀=262 μM) potentials. Safinamide has neuroprotective and neurorescuing effects and can be used for the study of parkinson disease, ischemia stroke etc.al.