2. Signaling Pathways
  3. Metabolic Enzyme/Protease
    Neuronal Signaling
  4. COMT

COMT

Catechol-O-methyltransferase

COMT

Related Products

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Catechol O-methyltransferase (COMT) is the enzyme responsible for the O-methylation of endogenous neurotransmitters and of xenobiotic substances and hormones incorporating catecholic structures. COMT is present in mammals as soluble (S-COMT) and membrane-bound (MB-COMT) forms. S-COMT is the predominant form of COMT in the peripheral organs and MB-COMT is more abundant in the Central Nervous System. Physiological substrates of COMT include L-dopa, catecholamines (dopamine, norepinephrine, and epinephrine), their hydroxylated metabolites, catecholestrogens, ascorbic acid, and dihydroxyindolic intermediates of melanin. Specifically, COMT plays a critical role in the inactivation and metabolism of dopamine and other catechol compounds. The enzyme reduces a catechol molecule in order to prevent genomic damage through DNA adduct formation or via oxygen radicals produced from the redox cycling of catechols. COMT is a druggable biological target for the treatment of various central and peripheral nervous system disorders, including Parkinson's disease, depression, schizophrenia, and other dopamine deficiency-related diseases[1].

COMT Related Products (48):

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-157719
    S-Adenosylhomocysteine sulfoxide
    		Inhibitor
    S-Adenosylhomocysteine sulfoxide is an inhibitor of catechol-O-methyltransferase (COMT) with an IC50 value of 860 μM. S-Adenosylhomocysteine sulfoxide can be used in the research of methylation reaction modulators.
    S-Adenosylhomocysteine sulfoxide
  • HY-106842
    Nitecapone
    		Inhibitor 99.53%
    Nitecapone (OR-462) is an orally active and short-acting catechol-O-methyltransferase (COMT) inhibitor with gastroprotective and antioxidant properties. Nitecapone (OR-462) scavenges reactive oxygen and nitric radicals and prevents lipid peroxidation.
    Nitecapone
  • HY-17406S1
    Tolcapone-d4
    		Inhibitor 99.13%
    Tolcapone-d4 (Ro 40-7592-d4) is the deuterium labeled Tolcapone (HY-17406). Tolcapone (Ro 40-7592) is a selective, potent and orally active COMT inhibitor with an IC50of 773 nM. Tolcapone can inhibits α-syn and Aβ42 oligomerization and fibrillogenesis. Tolcapone can cause oxidative stress and induce cancer cells apoptosis and ROS production. Tolcapone can be used for the researches of cancer and neurological disease, such as Parkinson disease and neuroblastoma.
    Tolcapone-d<sub>4</sub>
  • HY-14280R
    Entacapone (Standard)
    		Inhibitor
    Entacapone (Standard) is the analytical standard of Entacapone. This product is intended for research and analytical applications. Entacapone is a potent, reversible, peripherally acting and orally active catechol-O-methyltransferase (COMT) inhibitor. Entacapone inhibits COMT from rat brain, erythrocytes and liver with IC50 values of 10 nM, 20 nM, and 160 nM, respectively. Entacapone is selective for COMT over other catecholamine metabolizing enzymes, including MAO-A, MAO-B, phenolsulphotransferase M (PST-M) and PST-P (IC50s>50 µM). Entacapone can be used for the research of Parkinson's disease. Entacapone serves as a inhibitor of FTO demethylation with an IC50 of 3.5 μM, can be used for the research of metabolic disorders.
    Entacapone (Standard)
  • HY-14280S
    Entacapone-d10
    		Inhibitor 98.0%
    Entacapone-d10 is the deuterium labeled Entacapone. Entacapone is a potent, reversible, peripherally acting and orally active catechol-O-methyltransferase (COMT) inhibitor. Entacapone inhibits COMT from rat brain, erythrocytes and liver with IC50 values of 10 nM, 20 nM, and 160 nM, respectively. Entacapone is selective for COMT over other catecholamine metabolizing enzymes, including MAO-A, MAO-B, phenolsulphotransferase M (PST-M) and PST-P (IC50s>50 μM). Entacapone can be used for the research of Parkinson's disease. Entacapone serves as a inhibitor of FTO demethylation with an IC50 of 3.5 μM, can be used for the research of metabolic disorders.
    Entacapone-d<sub>10</sub>
  • HY-121949
    U-0521
    		Inhibitor 98.67%
    U-0521 is the inhibitor of the catechol-O-methyltransferase (COMT). U-0521 has the potential for the research of Parkinson's disease.
    U-0521
  • HY-100642S
    3-O-Methyltolcapone-d7
    		Inhibitor 99.0%
    3-O-Methyltolcapone-d7 (Ro 40-7591 d7) is a deuterium labeled 3-O-Methyltolcapone (HY-174062). 3-O-Methyltolcapone (Ro 40-7591) is a metabolite of Tolcapone (HY-17406). Tolcapone (Ro 40-7592) is a selective, potent and orally active COMT inhibitor with an IC50of 773 nM. Tolcapone can inhibits α-syn and Aβ42 oligomerization and fibrillogenesis. Tolcapone can cause oxidative stress and induce cancer cells apoptosis and ROS production. Tolcapone can be used for the researches of cancer and neurological disease, such as Parkinson disease and neuroblastoma.
    3-O-Methyltolcapone-d<sub>7</sub>
  • HY-139089
    (Z)-Entacapone
    		Inhibitor
    (Z)-Entacapone is a metabolite of the catechol-O-methyltransferase (COMT) inhibitor Entacapone (HY-14280). It is also a potential impurity found in commercial preparations of Entacapone and a degradant of Entacapone formed by UV light exposure.
    (Z)-Entacapone
  • HY-133068A
    (E)-5-Hydroxyferulic acid
    (E)-5-Hydroxyferulic acid is the E-isomer of 5-Hydroxyferulic acid (HY-133068). 5-hydroxyferulic acid is a hydroxycinnamic acid and is a metabolite of the phenylpropanoid pathway. 5-Hydroxyferulic acid is a precursor in the biosynthesis of sinapic acid and is also a COMT non-esterifed substrat.
    (E)-5-Hydroxyferulic acid
  • HY-120325
    DHMPA
    		Inhibitor
    DHMPA is an effective depletor of norepinephrine content of the heart, brain and spleen in mouse and rat. DHMPA has antihypertensive effects.
    DHMPA
  • HY-17406S
    Tolcapone-d7
    		Inhibitor
    Tolcapone-d7 (Ro 40-7592-d7) is the deuterium labeled Tolcapone (HY-17406). Tolcapone (Ro 40-7592) is a selective, potent and orally active COMT inhibitor with an IC50of 773 nM. Tolcapone can inhibits α-syn and Aβ42 oligomerization and fibrillogenesis. Tolcapone can cause oxidative stress and induce cancer cells apoptosis and ROS production. Tolcapone can be used for the researches of cancer and neurological disease, such as Parkinson disease and neuroblastoma.
    Tolcapone-d<sub>7</sub>
  • HY-17406R
    Tolcapone (Standard)
    		Inhibitor
    Tolcapone (Standard) (Ro 40-7592 (Standard)) is the analytical standard of Tolcapone (HY-17406). Tolcapone (Ro 40-7592) is a selective, potent and orally active COMT inhibitor with an IC50of 773 nM. Tolcapone can inhibits α-syn and Aβ42 oligomerization and fibrillogenesis. Tolcapone can cause oxidative stress and induce cancer cells apoptosis and ROS production. Tolcapone can be used for the researches of cancer and neurological disease, such as Parkinson disease and neuroblastoma.
    Tolcapone (Standard)
  • HY-151390
    hMAO-B/MB-COMT-IN-2
    		Inhibitor
    hMAO-B/MB-COMT-IN-2 is a dual MAO-B/MB-COMT inhibitor (IC50s: 4.27 μΜ for hMAO-B, 2.69 μΜ for MB-COMT). hMAO-B/MB-COMT-IN-2 protects cells against oxidative damage. hMAO-B/MB-COMT-IN-2 can be used in the research of neurodegeneration disease, such as Parkinson’s Disease (PD).
    hMAO-B/MB-COMT-IN-2
  • HY-100642S1
    3-O-Methyltolcapone-d4
    		Inhibitor
    3-O-Methyltolcapone-d4 (Ro 40-7591 d4) is a deuterium labeled 3-O-Methyltolcapone (HY-174062). 3-O-Methyltolcapone (Ro 40-7591) is a metabolite of Tolcapone (HY-17406). Tolcapone (Ro 40-7592) is a selective, potent and orally active COMT inhibitor with an IC50of 773 nM. Tolcapone can inhibits α-syn and Aβ42 oligomerization and fibrillogenesis. Tolcapone can cause oxidative stress and induce cancer cells apoptosis and ROS production. Tolcapone can be used for the researches of cancer and neurological disease, such as Parkinson disease and neuroblastoma.
    3-O-Methyltolcapone-d<sub>4</sub>
  • HY-162760
    COMT-IN-1
    		Inhibitor
    COMT-IN-1 (compound C12), a nitrophenolic analogue, is an orally active dopamine metabolic enzyme catechol-O-methyltransferase (COMT) inhibitor with IC50s of 0.37 μM, 95.58 μM and 58.82 μM for COMT, MAO-A and MAO-B, respectively. COMT-IN-1 exhibits chelation with a variety of metal ions. COMT-IN-1 exhibits good BBB permeability. COMT-IN-1 improves dopamine levels and ameliorates MPTP (HY-15608)-induced Parkinson's disease (PD) symptoms in mice.
    COMT-IN-1
  • HY-169611
    Serotonin maleate
    		Inhibitor
    Serotonin hydrogen maleate is a monoamine neurotransmitter in the CNS and an endogenous 5-HT receptor agonist. Serotonin hydrogen maleate is also a catechol O-methyltransferase (COMT) inhibitor with a Ki of 44 μM .
    Serotonin maleate
  • HY-168154
    COMT-IN-2
    		Inhibitor
    COMT-IN-2 (compund 9) is the potent COMT inhibitor, showing selective inhibition of brain (IC50=24 nM) and liver (IC50=81 nM) MB-COMT compared to the liver S-COMT (IC50=620 nM) isoform.
    COMT-IN-2
  • HY-19061
    CGP 28014
    		Inhibitor
    CGP 28014 is a catechol-O-methyltransferase inhibitor. CGP 28014 can lower HVA levels and increase DOPAC levels in the striatum of rats, making it useful for research on Parkinson's disease.
    CGP 28014
  • HY-14896R
    Opicapone (Standard)
    		Inhibitor
    Opicapone (Standard) is the analytical standard of Opicapone. This product is intended for research and analytical applications. Opicapone (BIA 9-1067) is a potent third-generation catechol-O-methyltransferase (COMT) inhibitor for the research of Parkinson's disease and motor fluctuations. Opicapone decreases the ATP content of the cells with an IC50 of 98 μM.
    Opicapone (Standard)
  • HY-126194
    Tolcapone 3-β-D-glucuronide
    		Inhibitor
    Tolcapone 3-β-D-glucuronide (Ro 61-1448) is an O-methyl metabolite of Tolcapone (HY-17406) and is pharmacologically inactive. Tolcapone (Ro 40-7592) is a selective, potent and orally active COMT inhibitor with an IC50of 773 nM. Tolcapone can inhibits α-syn and Aβ42 oligomerization and fibrillogenesis. Tolcapone can cause oxidative stress and induce cancer cells apoptosis and ROS production. Tolcapone can be used for the researches of cancer and neurological disease, such as Parkinson disease and neuroblastoma.
    Tolcapone 3-β-D-glucuronide