Search Result

Results for "

catechol

" in MedChemExpress (MCE) Product Catalog:

By Targets:	COMT (29) 5-HT Receptor (8) Adrenergic Receptor (2) Aminopeptidase (1) Apoptosis (3) Bacterial (2) Biochemical Assay Reagents (4) Carbonic Anhydrase (1) DNA/RNA Synthesis (1) Dopamine Receptor (4) Drug Derivative (4) Drug Metabolite (3) Endogenous Metabolite (19) Fluorescent Dye (2) HIV (1) Interleukin Related (1) Isotope-Labeled Compounds (8) Liposome (1) Mitochondrial Metabolism (1) MOFs (1) Monoamine Oxidase (2) NADPH Oxidase (1) NF-κB (1) Nucleoside Antimetabolite/Analog (1) Parasite (1) Reactive Oxygen Species (ROS) (3) Reference Standards (9) Reverse Transcriptase (1) sFRP-1 (1)
By Research Areas:	Cancer (11) Cardiovascular Disease (5) Infection (4) Inflammation/Immunology (10) Metabolic Disease (7) Neurological Disease (32)
Oligonucleotides:	Phospholipids (1)

Inhibitors & Agonists

Fluorescent Dye

Biochemical Assay Reagents

Natural
Products

Recombinant Proteins

Isotope-Labeled Compounds

Antibodies

Oligonucleotides

Targets Recommended: COMT

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-B1473A

Serotonin Maximum Cited Publications 31 Publications Verification 5-Hydroxytryptamine; 5-HT	5-HT Receptor COMT Endogenous Metabolite	Neurological Disease
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 K_i of 44 μM.

HY-B1473

Serotonin hydrochloride Maximum Cited Publications 31 Publications Verification 5-Hydroxytryptamine hydrochloride; 5-HT hydrochloride	5-HT Receptor COMT Endogenous Metabolite	Neurological Disease
Serotonin (5-Hydroxytryptamine) hydrochloride is a monoamine neurotransmitter in the CNS and an endogenous 5-HT receptor agonist, with blood-brain barrier permeability. Serotonin hydrochloride is also a catechol O-methyltransferase (COMT) inhibitor with a K_i of 44 μM.

HY-14280

Entacapone 5+ Cited Publications	COMT	Neurological Disease Cancer
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 .

HY-14896

Opicapone 3 Publications Verification BIA 9-1067	COMT	Neurological Disease
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 .

HY-B1473AS

Serotonin-d4 5-Hydroxytryptamine-d₄; 5-HT-d₄	Isotope-Labeled Compounds 5-HT Receptor COMT Endogenous Metabolite	Neurological Disease
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.

HY-W012814

4-Methylcatechol	Endogenous Metabolite Apoptosis Reactive Oxygen Species (ROS)	Cardiovascular Disease Inflammation/Immunology Cancer
4-Methylcatechol is an intermediate in the degradation of some alkylbenzenes and an orally active suicide inhibitor of catechol 2,3-dioxygenase (C23O). 4-Methylcatechol induces apoptosis in melanoma cells through oxidative stress, but some studies have also shown that 4-Methylcatechol is carcinogenic. In addition, 4-Methylcatechol has antiplatelet and blood pressure-lowering activities. 4-Methylcatechol can also inhibit protein oxidation in beef but does not disulfide formation .

HY-100562

Flopropione	5-HT Receptor COMT	Neurological Disease
Flopropione is a 5-HT receptor antagonist and also a catechol-o-methyltransferase (COMT) inhibitor . Flopropione also as an antispasmodic agent .

HY-W014728

N-Methyldopamine hydrochloride 1 Publications Verification	Dopamine Receptor	Cardiovascular Disease Neurological Disease
N-Methyldopamine hydrochloride is a precursor of adrenaline in the adrenal medulla. N-Methyldopamine hydrochloride is a modification of the dopamine (DA), and retains agonist activity at the DA1 receptor. N-Methyldopamine hydrochloride remains capable of universal surface coating and secondary reactions using the surface catechols. N-Methyldopamine hydrochloride can be used for heart failure research .

HY-157719

S-Adenosylhomocysteine sulfoxide	COMT	Others
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 .

HY-133597

4-Chlorocatechol	Drug Derivative	Others
4-Chlorocatechol is a major degradation product of 4-chloro-2-aminophenol (4C2AP). 4-Chlorocatechol is also a substrate for catechol 1,2-dioxygenases and chlorocatechol dioxygenase .

HY-106842

Nitecapone OR-462	COMT	Neurological Disease Inflammation/Immunology
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 .

HY-B1473S

Serotonin-d4 hydrochloride 5-Hydroxytryptamine-d4 hydrochloride; 5-HT-d4 hydrochloride	Isotope-Labeled Compounds 5-HT Receptor Endogenous Metabolite COMT	Others
Serotonin-d₄ (5-Hydroxytryptamine-d₄) hydrochloride is the deuterium labeled Serotonin (hydrochloride) (HY-B1473) . 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 K_i of 44 μM .

HY-125339

Ro 41-0960	COMT	Neurological Disease
Ro 41-0960 is a selective catechol-O-methyltransferase(COMT) inhibitor .

HY-113252

2-Methoxyestrone 3 Publications Verification	Endogenous Metabolite	Metabolic Disease
2-Methoxyestrone is a methoxylated catechol estrogen and metabolite of estrone, with a pKa of 10.81.

HY-106405

Nebicapone BIA 3-202	COMT	Metabolic Disease
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 .

HY-D0798

Catechol violet	Fluorescent Dye	Others
Catechol violet is an efficient and versatile ligand for Cu(I)-catalyzed C-S coupling reactions. Catechol violet is also a complexometric indicator dye .

HY-B1481

Isoetharine mesylate Isoetarine mesylate	Adrenergic Receptor	Cardiovascular Disease Inflammation/Immunology
Isoetharine (Isoetarine) mesylate is an orally active selective agonist of β-adrenergic receptors. Isoetharine mesylate is a catechol-like agent and catechol O-methyltransferase (COMT) mediates its methylation. Isoetharine mesylate can promote the production of cAMP which stimulates the relaxation of smooth muscle cells and can be used as an emphysema, bronchitis and bronchodilator .

HY-W006000

Tetrachlorocatechol	Drug Metabolite	Others
Tetrachlorocatechol is a metabolite of pentachlorophenol. Tetrachlorocatechol is one of the most toxic chlorinated catechol produced by the chlorobleaching of pulp and frequently found in the kraft pulp mill effluents .

HY-D2344

3-BTD 3-Benzothiazole-daphnetin	Fluorescent Dye	Others
3-BTD (3-Benzothiazole-daphnetin) is a Catechol-O-methyltransferase (COMT) two-photon fluorescence probe. 3-BTD can also be used for biological imaging of endogenous COMT in living cells and tissue sections .

HY-100959

3,5-Dinitrocatechol OR-486; 3,5-Dinitropyrocatechol	COMT	Neurological Disease
3,5-Dinitrocatechol (OR-486) is a potent *catechol-O-methyltransferase* inhibitor, with an IC₅₀ of 12 nM. 3,5-Dinitrocatechol can be used in the preparation of the molybdenum (VI)- 3,5-Dinitrocatechol complex .

HY-14280S

Entacapone-d10	COMT	Neurological Disease
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 .

HY-E70007

Catechol O-methyltransferase, porcine liver COMT	Endogenous Metabolite	Neurological Disease
Catechol O-methyltransferase, porcine liver (COMT), the magnesium-dependent transfer of methyl groups from S-adenosyl methionine to a hydroxyl group on dopamine, converting it to 3-methoxytyramine. Catechol O-methyltransferase has two forms in tissues, a soluble form (S-COMT) and a membrane-bound form (MB-COMT). Catechol O-methyltransferase is to regulate epinephrine, norepinephrine, and dopamine levels in the brain .

HY-117738

Benarthin	Aminopeptidase sFRP-1	Others
Benarthin is a catechol-type siderophore isolated from the marine actinomycete Streptomyces YM5-799 that exhibits iron-chelating properties .

HY-113468AR

3-O-Methyldopa (Standard) 3-Methoxy-L-tyrosine (Standard); 3-O-Methyl-L-DOPA (Standard)	Drug Derivative Interleukin Related Reference Standards	Neurological Disease Inflammation/Immunology
3-O-Methyldopa (Standard) is the analytical standard of 3-O-Methyldopa. This product is intended for research and analytical applications. 3-O-Methyldopa (3-Methoxy-L-tyrosine) is a metabolite of L-DOPA which is formed by catechol-O-methyltransferase (COMT). 3-O-Methyldopa competitively inhibits the pharmacodynamics of l-DOPA and dopamine .

HY-W012264

3-O-Methyldopa monohydrate 3-Methoxy-L-tyrosine monohydrate; 3-O-Methyl-L-DOPA monohydrate	COMT	Neurological Disease
3-O-Methyldopa monohydrate (3-Methoxy-L-tyrosine monohydrate) is a significant metabolite of L-DOPA produced through the action of catechol O-methyltransferase (COMT). Unlike its precursor, 3-O-Methyldopa does not serve as a substrate or inhibitor of L-amino acid decarboxylase activity. Additionally, the inhibition of COMT can amplify the anti-Parkinson effects of L-DOPA.

HY-14280R

Entacapone (Standard)	Reference Standards COMT	Neurological Disease Cancer
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 .

HY-144152S

Catechol sulfate-d4 sodium	Isotope-Labeled Compounds	Others
Catechol sulfate-d₄ (sodium) is the deuterium labeled Catechol sulfate sodium .

HY-B1481A

Isoetharine Isoetarine	Adrenergic Receptor	Cardiovascular Disease Inflammation/Immunology
Isoetharine (Isoetarine) is an orally active selective agonist of β-adrenergic receptors. Isoetharine is a catechol-like agent and catechol O-methyltransferase (COMT) mediates its methylation. Isoetharine can promote the production of cAMP which stimulates the relaxation of smooth muscle cells and can be used as an emphysema, bronchitis and bronchodilator .

HY-121949

U-0521	COMT	Neurological Disease
U-0521 is the inhibitor of the catechol-O-methyltransferase (COMT). U-0521 has the potential for the research of Parkinson's disease .

HY-B1473R

Serotonin hydrochloride (Standard) 5-Hydroxytryptamine hydrochloride (Standard); 5-HT hydrochloride (Standard)	5-HT Receptor Reference Standards COMT Endogenous Metabolite	Neurological Disease
Serotonin (5-Hydroxytryptamine) (Standard) hydrochloride is the analytical standard of Serotonin hydrochloride (HY-B1473). This product is intended for research and analytical applications. 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 K_i of 44 μM.

HY-B1473S2

Serotonin-13C,D4 5-Hydroxytryptamine-¹³C,D₄; 5-HT-¹³C,D₄	Isotope-Labeled Compounds 5-HT Receptor COMT Endogenous Metabolite	Neurological Disease
Serotonin- ¹³C,D₄ (5-Hydroxytryptamine-13C,D₄) is a ¹³C- and deuterated labeled Serotonin (HY-B1473A). 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 K_i of 44 μM .

HY-W012814R

4-Methylcatechol (Standard)	Reference Standards Endogenous Metabolite Apoptosis Reactive Oxygen Species (ROS)	Cardiovascular Disease Inflammation/Immunology Cancer
4-Methylcatechol (Standard) is the analytical standard of 4-Methylcatechol. This product is intended for research and analytical applications. 4-Methylcatechol is an intermediate in the degradation of some alkylbenzenes and an orally active suicide inhibitor of catechol 2,3-dioxygenase (C23O). 4-Methylcatechol induces apoptosis in melanoma cells through oxidative stress, but some studies have also shown that 4-Methylcatechol is carcinogenic. In addition, 4-Methylcatechol has antiplatelet and blood pressure-lowering activities. 4-Methylcatechol can also inhibit protein oxidation in beef but does not disulfide formation[1][2][3][4][5][6].

HY-N14935

Agrobactin	Biochemical Assay Reagents	Infection
Agrobactin is a catechol-type siderophore (microbial iron transport compound) .

HY-N3554

Catechin-7-O-β-D-xylopyranoside (+)-catechol 7-β-D-xylopyranoside	Others	Others
Catechin-7-O-β-D-xylopyranoside is an antioxidant compound with strong DPPH free radical scavenging ability. Catechin-7-O-β-D-xylopyranoside can be extracted from birch inner bark and nepeta stem bark .

HY-W012814S

4-Methylcatechol-d3	Endogenous Metabolite	Others
4-Methylcatechol-d₃ is the deuterium labeled 4-Methylcatechol . 4-Methylcatechol, a metabolite of p-toluate, is a substrate as well as a suicide inhibitor of Catechol 2,3-Dioxygenase .

HY-W012814S1

4-Methylcatechol-d8	Endogenous Metabolite	Others
4-Methylcatechol-d₈ is the deuterium labeled 4-Methylcatechol . 4-Methylcatechol, a metabolite of p-toluate, is a substrate as well as a suicide inhibitor of Catechol 2,3-Dioxygenase .

HY-119943B

(R)-PF-06256142	Dopamine Receptor	Neurological Disease
(R)-PF-06256142 is the R enantiomer of PF-06256142 with low active. PF-06256142 is a potent and selective orthosteric D1 receptor agonist that can reduce receptor desensitization relative to dopamine and other catechol-containing agonists .

HY-14896R

Opicapone (Standard) BIA 9-1067 (Standard)	Reference Standards COMT	Neurological Disease
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 .

HY-W704878

(Z)-Entacapone-d10-1	Isotope-Labeled Compounds COMT	Metabolic Disease
(Z)-Entacapone-d₁₀-1 is the deuterium labeled (Z)-Entacapone (HY-139089). (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.

HY-W009022

Diantipyrylmethane	Biochemical Assay Reagents	Others
Diantipyrylmethane is a chromogenic reagent commonly used for the determination of the contents of metals such as Au (III), Ti (IV), Ir, Fe (III), molybdenum, neodymium, U (IV), iridium, platinum and rhenium via spectrophotometry and extraction photometry. Diantipyrylmethane can also form a fluorescent complex with Er (III) ions, which is applied to the determination of erbium .

HY-W401531S

(R)-3-O-Methyldopa-d3	Dopamine Receptor Endogenous Metabolite	Neurological Disease
(R)-3-O-Methyldopa-d₃ is a deuterium labeled (R)-3-O-Methyldopa, and (R)-3-O-Methyldopa is an R-enantiomer of 3-O-Methyldopa. 3-O-Methyldopa is a metabolite of L-DOPA which is formed by catechol-O-methyltransferase (COMT). 3-O-Methyldopa competitively inhibits the pharmacodynamics of L-DOPA and dopamine .

HY-W401531S1

(R)-3-O-Methyldopa-d3 hydrochloride	Dopamine Receptor Endogenous Metabolite	Neurological Disease
(R)-3-O-Methyldopa-d₃ (hydrochloride) is a deuterium labeled (R)-3-O-Methyldopa, and (R)-3-O-Methyldopa is an R-enantiomer of 3-O-Methyldopa. 3-O-Methyldopa is a metabolite of L-DOPA which is formed by catechol-O-methyltransferase (COMT). 3-O-Methyldopa competitively inhibits the pharmacodynamics of L-DOPA and dopamine .

HY-14280A

Entacapone sodium salt	COMT	Neurological Disease Cancer
Entacapone sodium salt is a potent, reversible, peripherally acting and orally active catechol-O-methyltransferase (COMT) inhibitor. Entacapone sodium salt inhibits COMT from rat brain, erythrocytes and liver with IC₅₀ values of 10 nM, 20 nM, and 160 nM, respectively. Entacapone sodium salt 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 sodium salt can be used for the research of Parkinson's disease . Entacapone sodium salt serves as as a inhibit of FTO demethylation with an IC₅₀ of 3.5 μM, can be used for the research of metabolic disorders .

HY-200444

Lipid catechol	Liposome	Others
Lipid catechol is a lipid that forms lipid prodrug nanoassemblies (LPNA) with boronic acid-containing compounds. Lipid catechol is promising for research of drug delivery .

HY-125455

Ro 41-1879	Bacterial	Infection
Ro 41-1879 is a catechol cephalosporin that has antimicrobial activity .

HY-139716

IMD-catechol	NF-κB	Inflammation/Immunology
IMD-catechol is a novel imidazoquinolinone-NF-κB immunomodulator dimer that improves efficacy in a CT26 mouse colon carcinoma tumor model while eliciting minimal adjuvant toxicity.

HY-148769

*Cefiderocol catechol* 3-methoxy**	Others	Others
Cefiderocol catechol 3-methoxy is the metabolized product of cefiderocol (HY-17628) in the body .

HY-133598

3,4,5-Trichlorocatechol	DNA/RNA Synthesis	Cancer
3,4,5-Trichlorocatechol is a catechol derivative of pentachlorophenol and induces oxidative DNA lesions .

HY-171457

WR-27653 RC-12	Parasite Drug Derivative	Infection
WR-27653 (RC-12) is a derivative of Catechol with good activity against hypnozoites in the gold-standard Plasmodium cynomolgi-rhesus monkey (Macaca mulatta) model. WR-27653 has antimalarial activity .

HY-E70520

Salicylate hydroxylase, Microorganism	Biochemical Assay Reagents	Inflammation/Immunology Cancer
Salicylate hydroxylase, Microorganism (EC 1.14.13.1) is a flavin-dependent monooxygenase. Salicylate hydroxylase, Microorganism catalyzes the decarboxylative hydroxylation of salicylate into catechol in the naphthalene degradation pathway in Pseudomonas putida G7. Salicylate hydroxylase, Microorganism has potential biocatalytic applications .

Cat. No.	Product Name	Type

HY-D0798

Catechol violet	Biochemical Assay Reagents
Catechol violet is an efficient and versatile ligand for Cu(I)-catalyzed C-S coupling reactions. Catechol violet is also a complexometric indicator dye .

HY-W009022

Diantipyrylmethane	Biochemical Assay Reagents
Diantipyrylmethane is a chromogenic reagent commonly used for the determination of the contents of metals such as Au (III), Ti (IV), Ir, Fe (III), molybdenum, neodymium, U (IV), iridium, platinum and rhenium via spectrophotometry and extraction photometry. Diantipyrylmethane can also form a fluorescent complex with Er (III) ions, which is applied to the determination of erbium .

Cat. No.	Product Name	Category	Target	Chemical Structure

HY-B1473A

Serotonin Maximum Cited Publications 31 Publications Verification 5-Hydroxytryptamine; 5-HT	Alkaloids Structural Classification Endogenous metabolite Indole Alkaloids	5-HT Receptor COMT Endogenous Metabolite
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 K_i of 44 μM.

HY-B1473

Serotonin hydrochloride Maximum Cited Publications 31 Publications Verification 5-Hydroxytryptamine hydrochloride; 5-HT hydrochloride	Alkaloids Structural Classification Endogenous metabolite Indole Alkaloids Source Classification	5-HT Receptor COMT Endogenous Metabolite
Serotonin (5-Hydroxytryptamine) hydrochloride is a monoamine neurotransmitter in the CNS and an endogenous 5-HT receptor agonist, with blood-brain barrier permeability. Serotonin hydrochloride is also a catechol O-methyltransferase (COMT) inhibitor with a K_i of 44 μM.

HY-W012814

4-Methylcatechol	Human Gut Microbiota Metabolites Microorganisms Classification of Application Fields Other Diseases Phenols Polyphenols Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite Apoptosis Reactive Oxygen Species (ROS)
4-Methylcatechol is an intermediate in the degradation of some alkylbenzenes and an orally active suicide inhibitor of catechol 2,3-dioxygenase (C23O). 4-Methylcatechol induces apoptosis in melanoma cells through oxidative stress, but some studies have also shown that 4-Methylcatechol is carcinogenic. In addition, 4-Methylcatechol has antiplatelet and blood pressure-lowering activities. 4-Methylcatechol can also inhibit protein oxidation in beef but does not disulfide formation .

HY-113252

2-Methoxyestrone 3 Publications Verification	Monophenols Microorganisms Classification of Application Fields Disease markers Phenols Endocrine diseases Metabolic Disease Nervous System Disorder Endogenous metabolite Disease Research Fields Steroids Source Classification	Endogenous Metabolite
2-Methoxyestrone is a methoxylated catechol estrogen and metabolite of estrone, with a pKa of 10.81.

HY-E70007

Catechol O-methyltransferase, porcine liver COMT	Natural Products Neurological Disease Classification of Application Fields Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite
Catechol O-methyltransferase, porcine liver (COMT), the magnesium-dependent transfer of methyl groups from S-adenosyl methionine to a hydroxyl group on dopamine, converting it to 3-methoxytyramine. Catechol O-methyltransferase has two forms in tissues, a soluble form (S-COMT) and a membrane-bound form (MB-COMT). Catechol O-methyltransferase is to regulate epinephrine, norepinephrine, and dopamine levels in the brain .

HY-113468AR

3-O-Methyldopa (Standard) 3-Methoxy-L-tyrosine (Standard); 3-O-Methyl-L-DOPA (Standard)	Structural Classification Monophenols Ketones, Aldehydes, Acids Phenols Endogenous metabolite Source Classification	Drug Derivative Interleukin Related Reference Standards
3-O-Methyldopa (Standard) is the analytical standard of 3-O-Methyldopa. This product is intended for research and analytical applications. 3-O-Methyldopa (3-Methoxy-L-tyrosine) is a metabolite of L-DOPA which is formed by catechol-O-methyltransferase (COMT). 3-O-Methyldopa competitively inhibits the pharmacodynamics of l-DOPA and dopamine .

HY-B1473R

Serotonin hydrochloride (Standard) 5-Hydroxytryptamine hydrochloride (Standard); 5-HT hydrochloride (Standard)	Alkaloids Structural Classification Endogenous metabolite Indole Alkaloids Source Classification	5-HT Receptor Reference Standards COMT Endogenous Metabolite
Serotonin (5-Hydroxytryptamine) (Standard) hydrochloride is the analytical standard of Serotonin hydrochloride (HY-B1473). This product is intended for research and analytical applications. 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 K_i of 44 μM.

HY-W012814R

4-Methylcatechol (Standard)	Structural Classification Human Gut Microbiota Metabolites Microorganisms Phenols Polyphenols Endogenous metabolite Source Classification	Reference Standards Endogenous Metabolite Apoptosis Reactive Oxygen Species (ROS)
4-Methylcatechol (Standard) is the analytical standard of 4-Methylcatechol. This product is intended for research and analytical applications. 4-Methylcatechol is an intermediate in the degradation of some alkylbenzenes and an orally active suicide inhibitor of catechol 2,3-dioxygenase (C23O). 4-Methylcatechol induces apoptosis in melanoma cells through oxidative stress, but some studies have also shown that 4-Methylcatechol is carcinogenic. In addition, 4-Methylcatechol has antiplatelet and blood pressure-lowering activities. 4-Methylcatechol can also inhibit protein oxidation in beef but does not disulfide formation[1][2][3][4][5][6].

HY-N14935

Agrobactin	Natural Products Microorganisms Source Classification	Biochemical Assay Reagents
Agrobactin is a catechol-type siderophore (microbial iron transport compound) .

HY-N3554

Catechin-7-O-β-D-xylopyranoside (+)-catechol 7-β-D-xylopyranoside	Betula pendula Roth. Plants Saccharides Betulaceae Monosaccharides Source Classification	Others
Catechin-7-O-β-D-xylopyranoside is an antioxidant compound with strong DPPH free radical scavenging ability. Catechin-7-O-β-D-xylopyranoside can be extracted from birch inner bark and nepeta stem bark .

HY-124236

Chrysobactin	Microorganisms Phenols Polyphenols Source Classification	Bacterial
Chrysobactin is a compound isolated from the plant pathogenic bacterium Erwinia chrysanthemi. Chrysobactin has siderophore activity .

HY-N2641

Dihydrotamarixetin 4'-O-Methyldihydroquercetin; Blumeatin A	Structural Classification Flavanonols Flavonoids Plants Compositae Stuhlmannia moavi Taub. Source Classification	NADPH Oxidase
Dihydrotamarixetin (4'-O-Methyldihydroquercetin; Blumeatin A) is a flavonoid with a saturated 2,3-bond and a non-catechol B ring. Dihydrotamarixetin acts as an inhibitor of NADPH Oxidase .

HY-N10771

(R)-2-Isopropyl-8,8,8a-trimethyl-6,7,8,8a-tetrahydrophenanthrene-3,4-diol	Flavonoids Terpenoids Gramineae Morus nigra Linn. Diterpenoids Plants Moraceae Other Flavonoids Saccharum officinarum Source Classification	Others
(R)-2-Isopropyl-8,8,8a-trimethyl-6,7,8,8a-tetrahydrophenanthrene-3,4-diol (compound 48) is a catechol compound. (R)-2-Isopropyl-8,8,8a-trimethyl-6,7,8,8a-tetrahydrophenanthrene-3,4-diol involves in bioinspired synthesis of rearranged abietane diterpenes, related to pygmaeocins .

HY-N13090

Hydrocotoin	Monophenols Aniba pseudocoto Phenols Plants Lauraceae Source Classification	Others
Hydrocotoin is a catechol compound that can be isolated from Aniba pseudocoto .

HY-N17718

Urushiol (15:3) 3-[8'(Z), 11'(Z), 14'-Pentadecatrienyl] catechol	Structural Classification Phenols Polyphenols Plants Toxicodendron vernicifluum (Stokes) F. A. Barkl. Anacardiaceae Source Classification	HIV Reverse Transcriptase
Ursolic acid (15:3) (Compound 4) is a type of resiniferatoxin compound that can be found in the leaves of the tree Rhus verniciflua. Ursolic acid (15:3) exhibits moderate inhibitory activity against HIV-1 reverse transcriptase (b HIV-1 reverse transcriptase), with an IC₅₀ value of 55.36 μM. Ursolic acid (15:3) shows strong cytotoxicity against both PC-3 and MRC-5 cells. Ursolic acid (15:3) can be used in the research of anti-HIV-1 infection and prostate cancer .

Species:	Human (2)
Tag:	His (2)
Source:	Sf9 insect cells (1) E. coli (1)

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HY-P72149

	COMT Protein, Human (His) catechol O methyltransferase; catechol O-methyltransferase; COMT; COMT_HUMAN; EC 2.1.1.6	Human	E. coli
	Catechol-O-methyltransferase (COMT) plays a crucial role by catalyzing and inactivating the O-methylation of catecholamine neurotransmitters and catechol hormones. This enzyme activity is critical for regulating the biological half-life of key neuroactive compounds, including catecholamines. COMT Protein, Human (His) is the recombinant human-derived COMT protein, expressed by E. coli , with N-6*His labeled tag.

HY-P74230

	COMT Protein, Human (sf9, His) catechol O-methyltransferase; COMT	Human	Sf9 insect cells
	Catechol-O-methyltransferase (COMT) plays a crucial role by catalyzing and inactivating the O-methylation of catecholamine neurotransmitters and catechol hormones. This enzyme activity is critical for regulating the biological half-life of key neuroactive compounds, including catecholamines. COMT Protein, Human (sf9, His) is the recombinant human-derived COMT protein, expressed by Sf9 insect cells , with C-His labeled tag.

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Cat. No.	Product Name	Chemical Structure

HY-B1473AS

Serotonin-d4
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.

HY-B1473S

Serotonin-d4 hydrochloride
Serotonin-d₄ (5-Hydroxytryptamine-d₄) hydrochloride is the deuterium labeled Serotonin (hydrochloride) (HY-B1473) . 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 K_i of 44 μM .

HY-14280S

Entacapone-d10

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 .

HY-144152S

Catechol sulfate-d4 sodium
Catechol sulfate-d₄ (sodium) is the deuterium labeled Catechol sulfate sodium .

HY-B1473S2

Serotonin-13C,D4
Serotonin- ¹³C,D₄ (5-Hydroxytryptamine-13C,D₄) is a ¹³C- and deuterated labeled Serotonin (HY-B1473A). 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 K_i of 44 μM .

HY-W012814S

4-Methylcatechol-d3
4-Methylcatechol-d₃ is the deuterium labeled 4-Methylcatechol . 4-Methylcatechol, a metabolite of p-toluate, is a substrate as well as a suicide inhibitor of Catechol 2,3-Dioxygenase .

HY-W012814S1

4-Methylcatechol-d8
4-Methylcatechol-d₈ is the deuterium labeled 4-Methylcatechol . 4-Methylcatechol, a metabolite of p-toluate, is a substrate as well as a suicide inhibitor of Catechol 2,3-Dioxygenase .

HY-W704878

(Z)-Entacapone-d10-1
(Z)-Entacapone-d₁₀-1 is the deuterium labeled (Z)-Entacapone (HY-139089). (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.

HY-W401531S

(R)-3-O-Methyldopa-d3
(R)-3-O-Methyldopa-d₃ is a deuterium labeled (R)-3-O-Methyldopa, and (R)-3-O-Methyldopa is an R-enantiomer of 3-O-Methyldopa. 3-O-Methyldopa is a metabolite of L-DOPA which is formed by catechol-O-methyltransferase (COMT). 3-O-Methyldopa competitively inhibits the pharmacodynamics of L-DOPA and dopamine .

HY-W401531S1

(R)-3-O-Methyldopa-d3 hydrochloride
(R)-3-O-Methyldopa-d₃ (hydrochloride) is a deuterium labeled (R)-3-O-Methyldopa, and (R)-3-O-Methyldopa is an R-enantiomer of 3-O-Methyldopa. 3-O-Methyldopa is a metabolite of L-DOPA which is formed by catechol-O-methyltransferase (COMT). 3-O-Methyldopa competitively inhibits the pharmacodynamics of L-DOPA and dopamine .

HY-113252S1

2-Methoxyestrone-13C6
2-Methoxyestrone- ¹³C₆ is the ¹³C-labeled 2-Methoxyestrone. 2-Methoxyestrone is a methoxylated catechol estrogen and metabolite of estrone, with a pKa of 10.81.

HY-B0158S4

Cytidine-d1
Cytidine-d is the deuterium labeled Cytidine. Cytidine is a pyrimidine nucleoside and acts as a component of RNA. Cytidine is a precursor of uridine. Cytidine controls neuronal-glial glutamate cycling, affecting cerebral phospholipid metabolism, catechol

HY-113252S

2-Methoxyestrone-13C,d3
2-Methoxyestrone- ¹³C,d₃ is the ¹³C- and deuterium labeled 2-Methoxyestrone. 2-Methoxyestrone is a methoxylated catechol estrogen and metabolite of estrone, with a pKa of 10.81.

HY-113252S2

2-Methoxyestrone-d4
2-Methoxyestrone-d₄ is the deuterium labeled 2-Methoxyestrone. 2-Methoxyestrone is a methoxylated catechol estrogen and metabolite of estrone, with a pKa of 10.81 .

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HY-P82269

	COMT Antibody (YA2014) catechol O methyltransferase; COMT	WB, IHC-P	Human, Mouse, Rat
	COMT Antibody (YA2014) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to COMT.