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.

COMT Related Products (32):

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-B1473
    Serotonin hydrochloride
    		Inhibitor 99.97%
    Serotonin (5-Hydroxytryptamine) hydrochloride is a monoamine neurotransmitter in the CNS and an endogenous 5-HT receptor agonist. Serotonin hydrochloride is also a catechol O-methyltransferase (COMT) inhibitor with a Ki of 44 μM.
    Serotonin hydrochloride
  • HY-N0529
    Rosmarinic acid
    		Inhibitor 99.70%
    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.
    Rosmarinic acid
  • HY-B1473A
    Serotonin
    		Inhibitor 99.86%
    Serotonin is a monoamine neurotransmitter in the CNS and an endogenous 5-HT receptor agonist. Serotonin is also a catechol O-methyltransferase (COMT) inhibitor with a Ki of 44 μM.
    Serotonin
  • HY-17406
    Tolcapone
    		Inhibitor 99.91%
    Tolcapone (Ro 40-7592) is a selective, orally active and powerful mixed (peripheral and central) COMT inhibitor with an IC50 of 773 nM in the liver. Tolcapone is also a potent inhibitor of α-syn and Aβ42 oligomerization and fibrillogenesis. Tolcapone induces oxidative stress leading to apoptosis and inhibition of tumor growth in neuroblastoma.
    Tolcapone
  • HY-14280
    Entacapone
    		Inhibitor 99.97%
    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
  • HY-B1473AS
    Serotonin-d4
    		Inhibitor 99.60%
    Serotonin-d4 is deuterium labeled Serotonin. Serotonin is a monoamine neurotransmitter in the CNS and an endogenous 5-HT receptor agonist. Serotonin is also a catechol O-methyltransferase (COMT) inhibitor with a Ki of 44 μM.
    Serotonin-d<sub>4</sub>
  • HY-14896
    Opicapone
    		Inhibitor 99.06%
    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
  • HY-100562
    Flopropione
    		Inhibitor 98.57%
    Flopropione is a 5-HT receptor antagonist and also a catechol-o-methyltransferase (COMT) inhibitor. Flopropione also as an antispasmodic agent.
    Flopropione
  • HY-106405
    Nebicapone
    		Inhibitor 99.61%
    Nebicapone (BIA 3-202), a reversible catechol-O-methyltransferase (COMT) inhibitor, is mainly metabolized by glucuronidation. Nebicapone is mainly peripherally acting inhibitor that decreases the biotransformation of L-DOPA to 3-O-methyl-DOPA by inhibition of COMT, and it is potential for the treatment of Parkinson's disease.
    Nebicapone
  • HY-151388
    hMAO-B/MB-COMT-IN-1
    		Inhibitor 98.04%
    hMAO-B/MB-COMT-IN-1 is a dual MAO-B/MB-COMT inhibitor (IC50s: 2.5 μΜ for hMAO-B, 3.84 μΜ for MB-COMT). hMAO-B/MB-COMT-IN-1 protects cells against oxidative damage. hMAO-B/MB-COMT-IN-1 can be used in the research of neurodegeneration disease, such as Parkinson’s Disease (PD).
    hMAO-B/MB-COMT-IN-1
  • HY-133068
    5-Hydroxyferulic acid
    		99.80%
    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 substrate.
    5-Hydroxyferulic acid
  • HY-125339
    Ro 41-0960
    		Inhibitor ≥98.0%
    Ro 41-0960 is a selective catechol-O-methyltransferase(COMT) inhibitor.
    Ro 41-0960
  • HY-17406S1
    Tolcapone-d4
    		Inhibitor 99.13%
    Tolcapone-d4 is the deuterium labeled Tolcapone. Tolcapone (Ro 40-7592) is a selective, orally active and powerful mixed (peripheral and central) COMT inhibitor with an IC50 of 773 nM in the liver[1]. Tolcapone is also a potent inhibitor of α-syn and Aβ42 oligomerization and fibrillogenesis[2]. Tolcapone induces oxidative stress leading to apoptosis and inhibition of tumor growth in neuroblastoma[3].
    Tolcapone-d<sub>4</sub>
  • 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[1]. Entacapone serves as a inhibitor of FTO demethylation with an IC50 of 3.5 μM, can be used for the research of metabolic disorders[2].
    Entacapone-d<sub>10</sub>
  • 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-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-100642S
    3-O-Methyltolcapone-d7
    		Inhibitor ≥99.0%
    3-O-Methyltolcapone-d7 is a deuterium labeled 3-O-Methyltolcapone. 3-O-Methyltolcapone is a metabolite of Tolcapone. Tolcapone is an orally active, reversible, selective and potent COMT inhibitor. Tolcapone crosses the blood-brain barrier, and can be used for treatment of Parkinson's disease[1][2].
    3-O-Methyltolcapone-d<sub>7</sub>
  • 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-100642
    3-O-Methyltolcapone
    		Inhibitor
    3-O-Methyltolcapone (Ro 40-7591) is a metabolite of Tolcapone. Tolcapone is an orally active, reversible, selective and potent COMT inhibitor. Tolcapone crosses the blood-brain barrier, and can be used for treatment of Parkinson's disease.
    3-O-Methyltolcapone
  • 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)