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.


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N'-benzylpivalohydrazide

Pivalylbenzhydrazine (Pivhydrazine) is a potent monoamine oxidase (MAO) inhibitor. Pivalylbenzhydrazine decreases cartilage growth in normal rats. Pivalylbenzhydrazine can be used in research of depression[1].

  • CAS Number: 306-19-4
  • MF: C12H18N2O
  • MW: 206.28400
  • Catalog: Monoamine Oxidase
  • Density: 1.015g/cm3
  • Boiling Point: 296.1ºC at 760mmHg
  • Melting Point: N/A
  • Flash Point: 105.6ºC

Iproniazid (phosphate)

Iproniazid is a non-selective, irreversible monoamine oxidase inhibitor (MAOI) of the hydrazine class.

  • CAS Number: 305-33-9
  • MF: C9H16N3O5P
  • MW: 277.21400
  • Catalog: Monoamine Oxidase
  • Density: 1.084g/cm3
  • Boiling Point: 265.9ºC at 760mmHg
  • Melting Point: 181ºC
  • Flash Point: 114.6ºC

MAO A/HSP90-IN-2

MAO A/HSP90-IN-2 (compound 4-C) is a dual inhibitor of HSP90and MAO A with the IC50 values of 0.016 and 4.58 μM, respectively. MAO A/HSP90-IN-2 increases HSP70 expression and reduces HER2 and phospho-Akt expression, and decreases IFN-γ induced PD-L1 expression in GL26 cells. MAO A/HSP90-IN-2 inhibits the growth of Temozolomide (HY-17364) -sensitive and -resistant GBM cells, colon cancer, leukemia, non-small cell lung and other cancers, and has potential to inhibit tumor immune escape[1].

  • CAS Number: 2927489-99-2
  • MF: C25H31ClN2O4
  • MW: 458.98
  • Catalog: HSP
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

SWS1

SWS1 is a d-(+)-biotin-conjugated PD-L1 inhibitor (IC50: 1.8 nM) with anticancer activity. SWS1 can increase the number of tumor-infiltrating lymphocytes and exhibit anti-tumor efficacy in the B16-F10 mouse model (TGI=66.1%)[1].

  • CAS Number: 2922115-32-8
  • MF: C47H53ClN6O5S
  • MW: 849.48
  • Catalog: PD-1/PD-L1
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

(2H3)Hydroxylamine (2H)hydrochloride (1:1)

Hydroxylamine-d3 (hydrochloride) is the deuterium labeled Hydroxyamine hydrochloride[1]. Hydroxyamine hydrochloride is a selective monoamine oxidase (MAO) inhibitor used for inhibiting of platelet aggregation. Hydroxyamine hydrochloride is an intermediate of organic synthesis[2].

  • CAS Number: 15588-23-5
  • MF: ClD4NO
  • MW: 73.516
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: 156-158ºC(lit.)
  • Flash Point: N/A

Safrazine

Safrazine is an irreversible, non-specific and orally active monoamine oxidase (MAO) inhibitor. Safrazine can be used for the research of depression[1].

  • CAS Number: 33419-68-0
  • MF: C11H16N2O2
  • MW: 208.25700
  • Catalog: Monoamine Oxidase
  • Density: 1.161g/cm3
  • Boiling Point: 368.9ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 176.9ºC

PXS-6302

PXS-6302 is an irreversible lysyl oxidase inhibitor with IC50s of 3.7 μM (Bovine LOX), 3.4 μM (rh LOXL1), 0.4 μM (rh LOXL2), 1.5 μM (rh LOXL3), 0.3 μM (rh LOXL4), respectively. PXS-6302 has readily skin penetrability, reduces collagen deposition and significantly improves scar appearance[1].

  • CAS Number: 2584947-54-4
  • MF: C10H10F3NO2S
  • MW: 265.25
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Tranylcypromine hydrochloride

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[1][2][3].

  • CAS Number: 1986-47-6
  • MF: C9H12ClN
  • MW: 169.651
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: 218.3ºC at 760mmHg
  • Melting Point: 162-169ºC(lit.)
  • Flash Point: 90.8ºC

Ladostigil

Ladostigil (TV-3326) is a dual inhibitor of cholinesterase and brain-selective monoamine oxidase (MAO), with an IC50 of 37.1 and 31.8 μM for MAO-B and AChE, reapectively. Ladostigil could increase cholinergic transmission, prevent the formation of ROS or their actions and be used for the research of depression and Alzheimer's disease[1][2].

  • CAS Number: 209394-27-4
  • MF: C16H20N2O2
  • MW: 272.34200
  • Catalog: AChE
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

methyl piperate

Methylpiperic acid is a piperine alkaloid with significant MAO inhibitory activity (IC503.6 μM). Methylpiperic acid is less effective against MAO-B (IC 501.6 μM) than MAO-A (IC5027.1 μM) has a bidirectional inhibitory effect. Methylphenidate is used to treat mental disorders [1].

  • CAS Number: 6190-46-1
  • MF: C13H12O4
  • MW: 232.23
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Befloxatone

Befloxatone (MD-370503) is an orally active, selective and reversible inhibitor of Monoamine Oxidase A (MAO-A) (IC50=4 nM). Befloxatone increases the tissue level of monoamine, striatal dopamine and cortical norepinephrine. Befloxatone has antidepressant potential[1].

  • CAS Number: 134564-82-2
  • MF: C15H18F3NO5
  • MW: 349.30200
  • Catalog: Monoamine Oxidase
  • Density: 1.326g/cm3
  • Boiling Point: 447.3ºC at 760mmHg
  • Melting Point: N/A
  • Flash Point: 224.3ºC

TB5

TB5 is a potent, selective and reversible inhibitor of hMAO-B with a Ki value of 0.11±0.01 μM.

  • CAS Number: 948841-07-4
  • MF: C15H14BrNOS
  • MW: 336.247
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Salsolidine hydrochloride

Salsolidine hydrochloride, a tetrahydroisoquinoline alkaloid, acts as a stereoselective competitive MAO A (monoamine oxidase A) inhibitor.

  • CAS Number: 63283-42-1
  • MF: C12H18ClNO2
  • MW: 243.73
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: 313.4ºC at 760 mmHg
  • Melting Point: 189-192ºC
  • Flash Point: 127.1ºC

Kynuramine dihydrochloride

Kynuramine, an endogenously occurring amine, is a fluorescent substrate and probe of plasma amine oxidase[1][2].

  • CAS Number: 36681-58-0
  • MF: C9H14Cl2N2O
  • MW: 237.13
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Minaprine

Minaprine is a reversible inhibitor of MAO-A; weakly inhibit acetylcholinesterase; an antidepressant for treatment of depression.

  • CAS Number: 25905-77-5
  • MF: C17H22N4O
  • MW: 298.38
  • Catalog: Monoamine Oxidase
  • Density: 1.156g/cm3
  • Boiling Point: 531.2ºC at 760 mmHg
  • Melting Point: 122°
  • Flash Point: 275.1ºC

Ethyl 7-(Diethylamino)coumarin-3-carboxylate

Ethyl 7-(diethylamino)-2-oxo-2H-chromene-3-carboxylate is a potent and selective inhibitor of hMAO-B with an IC50 of 45.52 μM[1].

  • CAS Number: 28705-46-6
  • MF: C16H19NO4
  • MW: 289.32600
  • Catalog: Monoamine Oxidase
  • Density: 1.204g/cm3
  • Boiling Point: 455.6ºC at 760mmHg
  • Melting Point: 86ºC
  • Flash Point: 229.3ºC

CCT 365623 hydrochloride

CCT 365623 (CCT365623) hydrochloride is a potent, orally active small molecule inhibitor of lysyl oxidase (LOX) with IC50 of 0.89 uM; inhibits LOX actvity in living cell system (MDCK cysts) at 5 uM, reduces EGFR retention at the cell surface, suppresses EGFR and AKT phosphorylation driven by EGF, also activates SMAD2 and downregulates MATN2; delays the growth of primary and metastatic tumour cells in vivo.

  • CAS Number: 2126136-98-7
  • MF: C18H18ClNO4S3
  • MW: 443.975
  • Catalog: EGFR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Homopterocarpin

Homopterocarpin is an isoflavonoid that can be isolated from Pterocarpus erinaceus. Homopterocarpin has hepatoprotective and antioxidant properties. Homopterocarpin is a competitive reversible inhibitor of human monoamine oxidase-B with an IC50 and a Ki of 0.72 and 0.21 μM for hMAO-B, respectively. Homopterocarpin can be used for the research of liver injury and oxidative stress[1][2].

  • CAS Number: 606-91-7
  • MF: C17H16O4
  • MW: 284.306
  • Catalog: Monoamine Oxidase
  • Density: 1.2±0.1 g/cm3
  • Boiling Point: 395.0±42.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 140.4±34.7 °C

Vafidemstat

Vafidemstat is a dual lysine-specific histone demethylase (LSD1)/MAO-B inhibitor.

  • CAS Number: 1357362-02-7
  • MF: C19H20N4O2
  • MW: 336.39
  • Catalog: Histone Demethylase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Obtusin

Obtusin, isolated from Cassia obtusifolia Linn seed, is a highly selective and competitive human monoamine oxidase-A (hMAO-A) inhibitor with an IC50 of 11.12 μM and a Ki of 6.15. Obtusin plays a preventive role in neurodegenerative diseases, especially anxiety and depression[1].

  • CAS Number: 70588-05-5
  • MF: C18H16O7
  • MW: 344.315
  • Catalog: Monoamine Oxidase
  • Density: 1.4±0.1 g/cm3
  • Boiling Point: 614.9±55.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 227.0±25.0 °C

Glicoricone

Glicoricone, a phenolic compound, is isolated from a species of licorice. Glicoricone is an inhibitor of monoamine oxidase (MAO), with an IC50 of 140 μM. Glicoricone binds to estrogen receptor (ER) and shows estrogen antagonist activity[1][2].

  • CAS Number: 161099-37-2
  • MF: C21H20O6
  • MW: 368.38
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Osthenol

Osthenol (Ostenol), a prenylated coumarin isolated from the dried roots of Angelica pubescens, is selective, reversible, and competitive human monoamine oxidase-A (hMAO-A) inhibitor (Ki=0.26 µM). Osthenol potently inhibits recombinant hMAO-A with an IC50 of 0.74 µM and shows a high selectivity index for hMAO-A versus hMAO-B[1].

  • CAS Number: 484-14-0
  • MF: C14H14O3
  • MW: 230.25900
  • Catalog: Monoamine Oxidase
  • Density: 1.203g/cm3
  • Boiling Point: 422.8ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 184.1ºC

KDS2010

KDS2010 (KDS-2010, KDS 2010) is a potent, highly selective, reversible Monoamine oxidase-B (MAO-B) inhibitor with IC50 of 7.6 nM; displays 12,500-fold selectivity over MAO-A; shows a marked enantiomer selectivity (eightfold selectivity) over the (R)-isomer; significantly ameliorates the impairments in spike probability, learning, and memory in APP/PS1 mice, but not by selegiline, also reverses spatial learning and memory impairments in the Morris water maze test.

  • CAS Number: 1894207-44-3
  • MF: C17H17F3N2O
  • MW: 322.331
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

CX-157

CX-157 is a reversible inhibitor of monoamine oxidase-A (MAO-A) with an EC50 of 19.3 ng/mL.

  • CAS Number: 205187-53-7
  • MF: C14H8F4O4S
  • MW: 348.27000
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Harmol

Harmol categorized as a β-carboline alkaloid. Harmol is a potent MAO inhibitor used as an analytical reference standard[1].

  • CAS Number: 487-03-6
  • MF: C12H10N2O
  • MW: 198.22100
  • Catalog: Monoamine Oxidase
  • Density: 1.33g/cm3
  • Boiling Point: 552.7ºC at 760mmHg
  • Melting Point: 231ºC
  • Flash Point: 255ºC

Kynuramine Dihydrobromide

Kynuramine (dihydrobromide), an endogenously occurring amine, is a fluorescent substrate and probe of plasma amine oxidase[1][2].

  • CAS Number: 304-47-2
  • MF: C9H14Br2N2O
  • MW: 326.02800
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: 367.3ºC at 760mmHg
  • Melting Point: N/A
  • Flash Point: 175.9ºC

N'-propan-2-ylpyridine-4-carbohydrazide

Iproniazid is a non-selective, irreversible monoamine oxidase (MAO) inhibitor of the hydrazine class. Iproniazid has antidepressive activity[1].

  • CAS Number: 54-92-2
  • MF: C9H13N3O
  • MW: 179.21900
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Modaline sulfate

Modaline Sulfate is a MAO inhibitor, used in the treatment of depression.

  • CAS Number: 2856-75-9
  • MF: C10H17N3O4S
  • MW: 275.32500
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: 294.2ºC at 760mmHg
  • Melting Point: N/A
  • Flash Point: 131.7ºC

Annh31

AnnH31 is a potent Inhibitor of DYRK1A Kinase.

  • CAS Number: 241809-12-1
  • MF: C15H13N3O
  • MW: 251.28
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

MAO-B-IN-27

MAO-B-IN-27 (Compound 12c) is a monoamine oxidase B (MAO-B) inhibitor. MAO-B-IN-27 has potent and selective MAO-B inhibitory effect for hMAO-B with an IC50 values of 8.9 nM. MAO-B-IN-27 can be used for the research of parkinson's disease (PD)[1].

  • CAS Number: 788824-83-9
  • MF: C16H17ClF3NO
  • MW: 331.76
  • Catalog: Monoamine Oxidase
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A