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Organic compound (C6H4(OH)2); benzene with two adjacent –OH groups
Catechol (/ˈkætɪtʃɒl/ or /ˈkætɪkɒl/), also known as pyrocatechol or 1,2-dihydroxybenzene, is an organic compound with the molecular formula C6H4(OH)2.
Catechol
Class of enzymes
Catechol-O-methyltransferase (COMT; EC 2.1.1.6) is one of several enzymes that degrade catecholamines (neurotransmitters such as dopamine, epinephrine
Catechol-O-methyltransferase
Enzyme
Catechol oxidase is a copper oxidase that contains a type 3 di-copper cofactor and catalyzes the oxidation of ortho-diphenols into ortho-quinones coupled
Catechol_oxidase
Type of enzyme
Catechol dioxygenases are metalloprotein enzymes that carry out the oxidative cleavage of catechols. This class of enzymes incorporate dioxygen into the
Catechol_dioxygenase
Group of natural pigments found in most organisms
Melanin produced by plants are sometimes referred to as 'catechol melanins' as they can yield catechol on alkali fusion. It is commonly seen in the enzymatic
Melanin
Primary female sex hormone
3α-androstanediol, and 3β-androstanediol. Some estrogen metabolites, such as the catechol estrogens 2-hydroxyestradiol, 2-hydroxyestrone, 4-hydroxyestradiol, and
Estrogen
Class of hormones
A catechol estrogen is a steroidal estrogen that contains catechol (1,2-dihydroxybenzene) within its structure. The catechol estrogens are endogenous metabolites
Catechol_estrogen
Enzyme
Catechol 1,2- dioxygenase (EC 1.13.11.1, 1,2-CTD, catechol-oxygen 1,2-oxidoreductase, 1,2-pyrocatechase, catechase, catechol 1,2-oxygenase, catechol dioxygenase
Catechol_1,2-dioxygenase
Medication
A catechol-O-methyltransferase inhibitor (COMT inhibitor) is a drug that inhibits the enzyme catechol-O-methyltransferase. This enzyme methylates catecholamines
Catechol-O-methyltransferase inhibitor
Catechol-O-methyltransferase_inhibitor
Enzyme
In enzymology, catechol oxidase (dimerizing) (EC 1.1.3.14) is an enzyme that catalyzes the chemical reaction Four catechol 3 O2 6 H2O 3 O2 6 H2O Two
Catechol_oxidase_(dimerizing)
Enzyme
Catechol 2,3-dioxygenase (EC 1.13.11.2, 2,3-pyrocatechase, catechol 2,3-oxygenase, catechol oxygenase, metapyrocatechase, pyrocatechol 2,3-dioxygenase)
Catechol_2,3-dioxygenase
Enzyme involved in fruit browning
o-diphenol:oxygen oxidoreductase enzymes (catechol oxidases). The substrate preference of tyrosinases and catechol oxidases is controlled by the amino acids
Polyphenol_oxidase
Class of chemical compounds
organic compound that has a catechol (benzene with two hydroxyl side groups next to each other) and a side-chain amine. Catechol can be either a free molecule
Catecholamine
Genetic variant
is a single nucleotide polymorphism (SNP) in the COMT gene that codes catechol-O-Methyltransferase. The single nucleotide substitution between G→A results
Rs4680
Chemical compound
4-tert-Butylcatechol (TBC) is an organic chemical compound which is a derivative of catechol. TBC is available in the form of a solid crystal flake and 85% solution
4-tert-Butylcatechol
(adrenaline) Inhibitors: CGS-19281A SKF-64139 SKF-7698 COMTTooltip Catechol-O-methyltransferase Substrates→Products: Dopamine→3-Methoxytyramine DOPAC→Homovanillic
List_of_dopaminergic_drugs
Abandoned COMT inhibitor
Nebicapone (developmental code name BIA 3-202) is a catechol O-methyltransferase (COMT) inhibitor which was under development for the treatment of Parkinson's
Nebicapone
Chemical compound
dioxygenase. It can also be prepared from catechol using the enzyme cis-1,2-dihydrobenzene-1,2-diol dehydrogenase: Catechol + NADPH H+ H+ cis-1,2-Dihydrocatechol
Cis-1,2-Dihydrocatechol
Chemical compound
is a derivative of catechol and a borane, having the formula C6H4O2BH. Traditionally catecholborane is produced by treating catechol with borane (BH3)
Catecholborane
Plant secondary metabolite
ring is similar to a resorcinol moiety while the B ring is similar to a catechol moiety. There are two chiral centers on the molecule on carbons 2 and 3
Catechin
Chemical compound
characteristic of ketones. 1,2-Benzoquinone is produced on oxidation of catechol exposed to air in aqueous solution or by ortho oxidation of a phenol. A
1,2-Benzoquinone
Substance related to dopamine functions
acid decarboxylase or DOPA decarboxylase, monoamine oxidase (MAO), and catechol O-methyl transferase (COMT) may be referred to as dopaminergic as well
Dopaminergic
Class of enzymes
Chloridazon-catechol dioxygenase (EC 1.13.11.36) is an enzyme that catalyzes the chemical reaction 5-amino-4-chloro-2-(2,3-dihydroxyphenyl)-3(2H)-pyridazinone
Chloridazon-catechol dioxygenase
Chloridazon-catechol_dioxygenase
Chemical compound
oxidative cleavage of isosafrole or by using a multistep sequence from catechol or 1,2-methylenedioxybenzene. Synthesis from the latter chemical is accomplished
Piperonal
Chemical compound
estra-1,3,5(10)-trien-2,3-diol-17-one, is an endogenous, naturally occurring catechol estrogen and a major metabolite of estrone and estradiol. It is formed
2-Hydroxyestrone
Chemical compound
3-O-methyldopa is produced by the methylation of L-DOPA by the enzyme catechol-O-methyltransferase. The necessary cofactor for this enzymatic reaction
3-O-Methyldopa
Index of chemical compounds with the same molecular formula
C6H6O2 (molar mass: 110.1 g/mol) may refer to: 2-Acetylfuran Benzenediols Catechol (benzene-1,2-diol) Resorcinol (benzene-1,3-diol) Hydroquinone (benzene-1
C6H6O2
Polymers formed by the condensation of flavans
Condensed tannins (proanthocyanidins, polyflavonoid tannins, catechol-type tannins, pyrocatecollic type tannins, non-hydrolyzable tannins or flavolans)
Condensed_tannin
Chemical compound
endogenous, naturally occurring methoxylated catechol estrogen and metabolite of estrone that is formed by catechol O-methyltransferase via the intermediate
2-Methoxyestrone
Hydrocarbon compound (C6H6)
breaking the aromaticity. Next, the diol is newly reduced by NADH to catechol. The catechol is then metabolized to acetyl CoA and succinyl CoA, used by organisms
Benzene
Chemical compound
semialdehyde is formed from catechol by the enzyme catechol 2,3-dioxygenase during the degradation of benzoates. catechol O2 O2 2-hydroxymuconate
2-Hydroxymuconate semialdehyde
2-Hydroxymuconate_semialdehyde
Chemical compound
which insect cuticles are formed by hardening molecular precursors. The catechol substituent is susceptible to redox and crosslinking. "N-Acetyldopamine"
N-Acetyldopamine
Chemical compound
alone. Entacapone is a selective and reversible inhibitor of the enzyme catechol-O-methyltransferase (COMT). When taken together with levodopa (L-DOPA)
Entacapone
Biochemical process in insects
oxygen is catalyzed by diverse enzymes such as laccase, which convert the catechol groups to quinones. The resulting quinones are susceptible to nucleophilic
Sclerotization
Enzyme for controlling the production of melanin
dioxygen (O2). In the presence of catechol, benzoquinone is formed (see reaction below). Hydrogens removed from catechol combine with oxygen to form water
Tyrosinase
COMT inhibitor
Neluxicapone (INNTooltip International Nonproprietary Name) is a catechol O-methyltransferase (COMT) inhibitor which has not been marketed as of 2024.
Neluxicapone
Investigational Parkinson's disease drugs
ODM-104 – catechol O-methyltransferase (COMT) inhibitor [188] OP-101 (dendrimer N-acetylcysteine) – various actions [189] OP-501 – catechol O-methyltransferase
List of investigational Parkinson's disease drugs
List_of_investigational_Parkinson's_disease_drugs
Chemical compound
polyphenol oxidase from tyrosine and catecholamines leading to the formation of catechol melanin. Like many quinones it can undergo redox reactions via the corresponding
Indole-5,6-quinone
Oily mixture of plant compounds
poison oak urushiol contains chiefly catechols with C17 side-chains, poison ivy and poison sumac contain mostly catechols with C15 sidechains. The likelihood
Urushiol
Genus of trees
comparable to the American poison ivy, as its sap contains heptadecyl catechols that are toxic to the skin. An immuno-chemical reaction is suspected as
Smodingium
Position of molecules attached to benzene rings
dihydroxybenzene (C6H4(OH)2) – the ortho isomer catechol, the meta isomer resorcinol, and the para isomer hydroquinone: catechol resorcinol hydroquinone There are three
Arene_substitution_pattern
chemical reaction 2,3-dihydroxybenzoate ⇌ {\displaystyle \rightleftharpoons } catechol + CO2 This enzyme belongs to the family of lyases, specifically the carboxy-lyases
O-pyrocatechuate decarboxylase
O-pyrocatechuate_decarboxylase
Topics referred to by the same term
Catechase may refer to: catechol dioxygenase Catechol 1,2-dioxygenase Catechol 2,3-dioxygenase This disambiguation page lists articles associated with
Catechase
Psychoactive drug, often called ecstasy
metabolized by two main metabolic pathways: (1) O-demethylenation followed by catechol-O-methyltransferase (COMT)-catalyzed methylation or glucuronide/sulfate
MDMA
Class of enzymes
chemical reaction 3,4-dihydroxybenzoate ⇌ {\displaystyle \rightleftharpoons } catechol + CO2 This enzyme belongs to the family of lyases, specifically the carboxy-lyases
Protocatechuate_decarboxylase
Compound that activates dopamine receptors
diffuse across the BBB because of the catechol group, it is too polar and therefore unable to enter the brain. The catechol group is a dihydroxy benzene ring
Dopamine_agonist
Species of bacterium
Desulfobacterium catecholicum is a catechol-degrading lemon-shaped non-sporing sulfate-reducing bacterium. Its type strain is Nzva20. Szewzyk, R.; Pfennig
Desulfobacterium_catecholicum
Allergenic plant of Asia and North America
and rinsing three times within 2–8 hours of exposure. The pentadecyl catechols of the oleoresin within the sap of poison ivy and related plants causes
Poison_ivy
Class of enzymes
1966). "The conversion of catechol and protocatechuate to beta-ketoadipate by Pseudomonas putida. 3. Enzymes of the catechol pathway". The Journal of Biological
4-carboxymuconolactone decarboxylase
4-carboxymuconolactone_decarboxylase
Germanium production methods
t-butyl group of the catechol ligand is alpha to the oxygen. The second Grignard reagent substitutes the now uni-dentate catechol-grignard adduct, removing
Chlorine-free germanium processing
Chlorine-free_germanium_processing
Chemical compound
endogenous, naturally occurring methoxylated catechol estrogen and metabolite of estradiol that is formed by catechol O-methyltransferase via the intermediate
4-Methoxyestradiol
Pigment
(NH4)6 Mo7O24, with sodium arsenate, Na2HAsO7. Some drugs that contain a catechol group react with phosphomolybdic acid (H3PMo12O40) to give the heteropoly-molybdenum
Molybdenum_blue
process of dehydrogenation of a hydroquinone, such as hydroquinone itself or catechol, to a quinone or alternatively the addition of a single hydrogen atom with
Semiquinone
Substance that mimics effects of catecholamines
Hydroxyl groups in the meta and para position of the aromatic ring to form a catechol which is essential for receptor binding The structure can be modified to
Sympathomimetic_drug
Chemical compound
together with levodopa in people with Parkinson's disease. Opicapone is a catechol-O-methyltransferase (COMT) inhibitor. The most common side effects are
Opicapone
Chemical compound
hydrogen peroxide and affords a mixture of hydroquinone and its ortho isomer catechol (benzene-1,2-diol): C6H5OH + H2O2 → C6H4(OH)2 + H2O Other, less common
Hydroquinone
Chemical compound
pesticides and pharmaceuticals. 1,3-Benzodioxole can be synthesized from catechol with disubstituted halomethanes. 1,4-Benzodioxine MDMA Methylenedioxy Safrole
1,3-Benzodioxole
Group of psychiatric and neurological conditions
Parkinson's disease and notably of dementia-related apathy. Centrally active catechol-O-methyltransferase inhibitors (COMTIs) like tolcapone, which are likewise
Disorders of diminished motivation
Disorders_of_diminished_motivation
American writer and biochemist (1920–1992)
Inactivation of Tyrosinase During Its Catalysis of the Aerobic Oxidation of Catechol". An abridged version was published in the Journal of the American Chemical
Isaac_Asimov
Chemical compound
often turn beige during storage. It is a derivative, formally speaking, of catechol. Hydroxytyrosol and its derivatives occur in olives and in wines. The olives
Hydroxytyrosol
Fluid produced by beavers
these have pheromonal activity, of which the phenols 4-ethylphenol and catechol and the ketones acetophenone and 3-hydroxyacetophenone are strongest. Five
Castoreum
Chemical compound
synthesized from commercially available reagents: chloroacetic acid and catechol react in the presence of phosphoryl chloride to yield chloroacetylcatechol
Adrenochrome
Pharmaceutical compound
Positive allosteric modulators: 5-Aminoindole 5-Chloroindole 5-Hydroxyindole Catechol Chloroform meta-Chlorophenylbiguanide (mCPBG) Colchicine Ethanol (alcohol)
1F-LSD
Plant chemical
Fisetin (7,3′,4′-flavon-3-ol) is a plant flavonol from the flavonoid group of polyphenols. It occurs in many plants where it serves as a yellow pigment
Fisetin
Chemical compound
endogenous, naturally occurring methoxylated catechol estrogen and metabolite of estrone that is formed by catechol O-methyltransferase via the intermediate
4-Methoxyestrone
Methoxyphenol compound, constituent of plant lignins and essential oils
by Otto Unverdorben in 1826. Guaiacol is produced by methylation of o-catechol, for example using potash and dimethyl sulfate: C6H4(OH)2 + (CH3O)2SO2
Guaiacol
Chemical compound
also known as estra-1,3,5(10)-triene-3,4,16α,17β-tetrol, is an endogenous catechol estrogen and metabolite of estriol. It has been found in pregnancy urine
4-Hydroxyestriol
Chemical compound
the formula (HO)2C6H3-4-CHCHCH2OH. This colourless solid is related to catechol by attachment to allyl alcohol. It is the precursor to one of the three
Caffeyl_alcohol
South American psychoactive decoction
Positive allosteric modulators: 5-Aminoindole 5-Chloroindole 5-Hydroxyindole Catechol Chloroform meta-Chlorophenylbiguanide (mCPBG) Colchicine Ethanol (alcohol)
Ayahuasca
Chemical compound
known as estra-1,3,5(10)-triene-2,3,17β-triol, is an endogenous steroid, catechol estrogen, and metabolite of estradiol, as well as a positional isomer of
2-Hydroxyestradiol
Chemical compound
also found in tequila. Creosol reacts with hydrogen halides to give a catechol. Vanillin, a related phenol Baird, Zachariah Steven; Uusi-Kyyny, Petri;
Creosol
(adrenaline) Inhibitors: CGS-19281A SKF-64139 SKF-7698 COMTTooltip Catechol-O-methyltransferase Substrates→Products: Dopamine→3-Methoxytyramine DOPAC→Homovanillic
List_of_adrenergic_drugs
Chemical compound
metabolite of epinephrine (also known as adrenaline) created by action of catechol-O-methyl transferase on epinephrine. An article in the Journal of the American
Metanephrine
Installation of sulfamic acid or sulfamate
Sulfamation can also be effected by treating the amine with the sulfate ester of catechol (C6H4O2SO2). DuBois, Grant E.; Stephenson, Rebecca A. (1980). "Sulfonylamine-Mediated
Sulfamation
Chemical compound
excreted from the body. In vitro, the meta-hydroxyl group of catechol is methylated by catechol-O-methyltransferase. Four of the five hydroxyl groups of quercetin
Quercetin
Chemical compound
normetadrenaline, is a metabolite of norepinephrine created by action of catechol-O-methyl transferase on norepinephrine. It is excreted in the urine and
Normetanephrine
Chemical compound
(adrenaline) Inhibitors: CGS-19281A SKF-64139 SKF-7698 COMTTooltip Catechol-O-methyltransferase Substrates→Products: Dopamine→3-Methoxytyramine DOPAC→Homovanillic
4-Fluoroselegiline
Species of Terminalia
extracted from it. The bark and especially the fruit yield pyrogallol and catechol to dye and tan leather. Water stored in the stem is often tapped and used
Terminalia_elliptica
Class of enzymes
catalyzes the chemical reaction anthranilic acid + NADH + H+ O2 CO2 catechol + NAD+ + NH3 The four substrates of this enzyme are anthranilic acid
Anthranilate 1,2-dioxygenase (deaminating, decarboxylating)
Anthranilate_1,2-dioxygenase_(deaminating,_decarboxylating)
Mental disorder
between a polymorphism in SLC1A1 and OCD. The relationship between OCD and Catechol-O-methyltransferase (COMT) has been inconsistent, with one meta-analysis
Obsessive–compulsive_disorder
Overview article
Several of these key components function by suppressing the activity of catechol oxidase. VIORIS products, a variation of BB cream, are reputed to possess
Light skin in Japanese culture
Light_skin_in_Japanese_culture
of the estrogen steroid hormone estradiol. It is hydroxylated into the catechol estrogens 2-hydroxyestradiol and 4-hydroxyestradiol and into estriol
Hydroxylation_of_estradiol
Chemical compound
vanillin, differing on the 3 position. Ethylvanillin is prepared from catechol, beginning with ethylation to give guaethol (1). This ether condenses with
Ethylvanillin
Chemical compound
formed by the introduction of a methyl group to dopamine by the enzyme catechol-O-methyltransferase (COMT). 3-MT can be further metabolized by the enzyme
3-Methoxytyramine
Chemical compound
mechanisms by cysteine, ascorbic acid and citric acid, and identifying PPO-catechol-cysteine reaction products". Journal of Food Science and Technology. 52
Sodium_bisulfate
Chemical compound
benzene ring, the molecule is less susceptible to metabolism by the enzyme catechol-O-methyl transferase. Terbutaline is synthesized by brominating 3
Terbutaline
Medication mainly used for depression and smoking cessation
Positive allosteric modulators: 5-Aminoindole 5-Chloroindole 5-Hydroxyindole Catechol Chloroform meta-Chlorophenylbiguanide (mCPBG) Colchicine Ethanol (alcohol)
Bupropion
Chemical compound
anhydride ("Perkin synthesis"). Oxidation with hydrogen peroxide gives catechol (1,2-dihydroxybenzene) (Dakin reaction). Etherification with chloroacetic
Salicylaldehyde
Chemical compound
Propoxur is a carbamate, non-systemic, synthetic insecticide, produced from catechol, and was introduced in 1959 by Bayer. Carbamate insecticides are cholinesterase
Propoxur
Chemical compound
Sterubin (7-methoxy-3',4',5-trihydroxyflavanone) is a bitter-masking flavanone extracted from Yerba Santa (Eriodictyon californicum) a plant native to
Sterubin
Group of chemical compounds
Positive allosteric modulators: 5-Aminoindole 5-Chloroindole 5-Hydroxyindole Catechol Chloroform meta-Chlorophenylbiguanide (mCPBG) Colchicine Ethanol (alcohol)
Β-Carboline
Chemical compound
Other metabolic pathways of dopamine metabolism include methylation by catechol O-methyltransferase (COMT) into 3-methoxytyramine and β-hydroxylation by
3,4-Dihydroxyphenylacetaldehyde
3,4-Dihydroxyphenylacetaldehyde
Species of legume
its extracts, the species has lent its name to the important catechins, catechols and catecholamines of chemistry and biology. The tree's seeds are a good
Senegalia_catechu
Chemical compound
Hydroxychavicol is a phenylpropanoid compound present in leaves of Piper betle. It is a more potent inhibitor of xanthine oxidase (IC50=16.7 μM) than allopurinol
Hydroxychavicol
Chemical compound
isoscopoletin (6-hydroxy-7-methoxycoumarin) through incubation with rat liver catechol-O-methyltransferase. Aesculetin can be synthesized by condensation of hydroxyhydroquinone
Aesculetin
Chemical compound
Ligand-Mediated Processes – Expanding Metal Reactivity by the Use of Redox-Active Catechol, o-Aminophenol and o-Phenylenediamine Ligands". Chemical Society Reviews
O-Phenylenediamine
Chemical compound
made from instant coffee. The developing chemistry is similar to that of catechol or pyrogallol. It is also used as a matrix in MALDI mass spectrometry analyses
Caffeic_acid
Pharmaceutical compound
ractopamine. Butopamine is not a catecholamine and is resistant to metabolism by catechol O-methyltransferase (COMT). In contrast to dobutamine, butopamine is orally
Butopamine
treatment of diarrhea-predominant irritable bowel syndrome Entacapone – a catechol-O-methyltransferase inhibitor used in combination with levodopa in the
Peripherally_selective_drug
Abandoned D1-like receptor agonist
Zelandopam (INNTooltip International Nonproprietary Name; developmental code names YM-435, MYD-37) is a selective dopamine D1-like receptor agonist related
Zelandopam
CATECHOL
CATECHOL
CATECHOL
CATECHOL
Surname or Lastname
English
English : perhaps a variant of Sait, from the Old English personal name Sǣgēat (‘sea Geat’).
Boy/Male
Hindu, Indian, Malayalam
Years
Girl/Female
American, Australian, Christian, French, Hebrew
Graceful Woman Warrior; Combination of Lou and Ann; Warrior; Favour
Surname or Lastname
English
English : probably from a pet form of a medieval personal name, probably either Harry or a derivative of Hard.
Boy/Male
British, English
Son who Lives in the Swamp
Boy/Male
Indian
Open space, Battle field
Girl/Female
Indian
Healer; Peace and Harmony; Healer Bringer of Peace and Harmony
Boy/Male
Tamil
Forthcoming generation
Surname or Lastname
English
English : of uncertain origin; perhaps a variant of the Sussex personal name Fairhall, which Reaney has as a habitational name from an unidentified place named in Old English as fæger healh ‘fair nook’ or ‘fair hollow’.
Girl/Female
Indian
Leader
CATECHOL
CATECHOL
CATECHOL
CATECHOL
CATECHOL
n.
A white crystalline substance, C6H4(OH)2, of the phenol series, found in various plants; -- so called because first obtained by distillation of gum catechu. Called also catechol, oxyphenol. etc.