Page last updated: 2024-10-24

synaptic cleft

Definition

Target type: cellularcomponent

The narrow gap that separates the presynaptic and postsynaptic membranes, into which neurotransmitter is released. [GOC:jl, http://synapses.mcg.edu/anatomy/chemical/synapse.stm]

The synaptic cleft is a specialized intercellular space between a neuron and its target cell, such as another neuron, muscle cell, or gland cell. It is the site of neurotransmission, where chemical signals are transmitted from one cell to another. The synaptic cleft is filled with a complex mixture of molecules, including neurotransmitters, enzymes, and structural proteins.

The cellular components of the synaptic cleft can be broadly categorized into three groups:

1. **Presynaptic terminal:** This is the end of the neuron that releases neurotransmitters. It contains a number of specialized structures, including:
* **Synaptic vesicles:** These small membrane-bound sacs store neurotransmitters.
* **Active zones:** These are specialized regions of the presynaptic membrane where neurotransmitters are released.
* **Docking proteins:** These proteins help to anchor synaptic vesicles to the active zones.
* **Fusion proteins:** These proteins mediate the fusion of synaptic vesicles with the presynaptic membrane, releasing neurotransmitters into the synaptic cleft.

2. **Postsynaptic density:** This is a dense protein scaffold located on the postsynaptic membrane. It contains a variety of proteins, including:
* **Receptors:** These proteins bind to neurotransmitters and initiate a signal transduction cascade in the postsynaptic cell.
* **Scaffolding proteins:** These proteins provide structural support for the postsynaptic density and help to organize the receptors and other signaling molecules.
* **Enzymes:** These enzymes are involved in the synthesis, degradation, and recycling of neurotransmitters.

3. **Extracellular matrix:** This is a complex network of proteins and polysaccharides that fills the synaptic cleft. It provides structural support, regulates the diffusion of neurotransmitters, and may also play a role in synaptic plasticity.

The specific composition of the synaptic cleft varies depending on the type of synapse and the function of the neurons involved. However, the basic components described above are common to most synapses.'
"

Proteins (3)

ProteinDefinitionTaxonomy
Glutamate receptor ionotropic, NMDA 1A glutamate receptor ionotropic, NMDA 1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q05586]Homo sapiens (human)
Excitatory amino acid transporter 3An excitatory amino acid transporter 3 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P43005]Homo sapiens (human)
AcetylcholinesteraseAn acetylcholinesterase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P22303]Homo sapiens (human)

Compounds (385)

CompoundDefinitionClassesRoles
quinacrinequinacrine : A member of the class of acridines that is acridine substituted by a chloro group at position 6, a methoxy group at position 2 and a [5-(diethylamino)pentan-2-yl]nitrilo group at position 9.

Quinacrine: An acridine derivative formerly widely used as an antimalarial but superseded by chloroquine in recent years. It has also been used as an anthelmintic and in the treatment of giardiasis and malignant effusions. It is used in cell biological experiments as an inhibitor of phospholipase A2.
acridines;
aromatic ether;
organochlorine compound;
tertiary amino compound
antimalarial;
EC 1.8.1.12 (trypanothione-disulfide reductase) inhibitor
carbamic acidcarbamic acid : A one-carbon compound that is ammonia in which one of the hydrogens is replaced by a carboxy group. Although carbamic acid derivatives are common, carbamic acid itself has never been synthesised.carbon oxoacid;
one-carbon compound;
organonitrogen compound
Escherichia coli metabolite
cholinecholinesallergen;
Daphnia magna metabolite;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
neurotransmitter;
nutrient;
plant metabolite;
Saccharomyces cerevisiae metabolite
coumarin2H-chromen-2-one: coumarin derivativecoumarinsfluorescent dye;
human metabolite;
plant metabolite
salicylic acidScalp: The outer covering of the calvaria. It is composed of several layers: SKIN; subcutaneous connective tissue; the occipitofrontal muscle which includes the tendinous galea aponeurotica; loose connective tissue; and the pericranium (the PERIOSTEUM of the SKULL).monohydroxybenzoic acidalgal metabolite;
antifungal agent;
antiinfective agent;
EC 1.11.1.11 (L-ascorbate peroxidase) inhibitor;
keratolytic drug;
plant hormone;
plant metabolite
3-cresol3-cresol: RN given refers to parent cpd

m-cresol : A cresol with the methyl substituent at position 3. It is a minor urinary metabolite of toluene.
cresolhuman xenobiotic metabolite
diacetylbutane-2,3-dione : An alpha-diketone that is butane substituted by oxo groups at positions 2 and 3. It is a metabolite produced during the malolactic fermentation.alpha-diketoneEscherichia coli metabolite;
Saccharomyces cerevisiae metabolite
thioctic acidThioctic Acid: An octanoic acid bridged with two sulfurs so that it is sometimes also called a pentanoic acid in some naming schemes. It is biosynthesized by cleavage of LINOLEIC ACID and is a coenzyme of oxoglutarate dehydrogenase (KETOGLUTARATE DEHYDROGENASE COMPLEX). It is used in DIETARY SUPPLEMENTS.dithiolanes;
heterocyclic fatty acid;
thia fatty acid
fundamental metabolite;
geroprotector
melatoninacetamides;
tryptamines
anticonvulsant;
central nervous system depressant;
geroprotector;
hormone;
human metabolite;
immunological adjuvant;
mouse metabolite;
radical scavenger
toluenemethylbenzene : Any alkylbenzene that is benzene substituted with one or more methyl groups.methylbenzene;
toluenes;
volatile organic compound
cholinergic antagonist;
fuel additive;
neurotoxin;
non-polar solvent
xanthine7H-xanthine : An oxopurine in which the purine ring is substituted by oxo groups at positions 2 and 6 and N-7 is protonated.

9H-xanthine : An oxopurine in which the purine ring is substituted by oxo groups at positions 2 and 6 and N-9 is protonated.
xanthineSaccharomyces cerevisiae metabolite
alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acidalpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid: An IBOTENIC ACID homolog and glutamate agonist. The compound is the defining agonist for the AMPA subtype of glutamate receptors (RECEPTORS, AMPA). It has been used as a radionuclide imaging agent but is more commonly used as an experimental tool in cell biological studies.non-proteinogenic alpha-amino acid
huperzine ahuperzine A : A sesquiterpene alkaloid isolated from a club moss Huperzia serrata that has been shown to exhibit neuroprotective activity. It is also an effective inhibitor of acetylcholinesterase and has attracted interest as a therapeutic candidate for Alzheimer's disease.

huperzine A: RN given refers to 5R-(5alpha,9beta,11E)-isomer; structure given in first source
quinolone
bw 284 c 51
3-methylcholanthrene3-methylcholanthrene : A pentacyclic ortho- and peri-fused polycyclic arene consisting of a dihydrocyclopenta[ij]tetraphene ring system with a methyl substituent at the 3-position.

Methylcholanthrene: A carcinogen that is often used in experimental cancer studies.
ortho- and peri-fused polycyclic arenearyl hydrocarbon receptor agonist;
carcinogenic agent
6,7-dichloroquinoxaline-2,3-dionequinoxaline derivative
6-methoxytryptoline6-methoxytryptoline: RN given refers to parent cpd; structure
oxyquinolineOxyquinoline: An antiseptic with mild fungistatic, bacteriostatic, anthelmintic, and amebicidal action. It is also used as a reagent and metal chelator, as a carrier for radio-indium for diagnostic purposes, and its halogenated derivatives are used in addition as topical anti-infective agents and oral antiamebics.

quinolin-8-ol : A monohydroxyquinoline that is quinoline substituted by a hydroxy group at position 8. Its fungicidal properties are used for the control of grey mould on vines and tomatoes.
monohydroxyquinolineantibacterial agent;
antifungal agrochemical;
antiseptic drug;
iron chelator
tacrinetacrine : A member of the class of acridines that is 1,2,3,4-tetrahydroacridine substituted by an amino group at position 9. It is used in the treatment of Alzheimer's disease.

Tacrine: A cholinesterase inhibitor that crosses the blood-brain barrier. Tacrine has been used to counter the effects of muscle relaxants, as a respiratory stimulant, and in the treatment of Alzheimer's disease and other central nervous system disorders.
acridines;
aromatic amine
EC 3.1.1.7 (acetylcholinesterase) inhibitor
ethacridineEthacridine: A topically applied anti-infective agent.acridines
alendronatealendronic acid : A 1,1-bis(phosphonic acid) that is methanebis(phosphonic acid) in which the two methylene hydrogens are replaced by hydroxy and 3-aminopropyl groups.1,1-bis(phosphonic acid);
primary amino compound
bone density conservation agent;
EC 2.5.1.1 (dimethylallyltranstransferase) inhibitor
alfuzosinalfuzosin: structure given in first sourcemonocarboxylic acid amide;
quinazolines;
tetrahydrofuranol
alpha-adrenergic antagonist;
antihypertensive agent;
antineoplastic agent
amantadineamant: an antiviral compound consisting of an adamantane derivative chemically linked to a water-solube polyanioic matrix; structure in first sourceadamantanes;
primary aliphatic amine
analgesic;
antiparkinson drug;
antiviral drug;
dopaminergic agent;
NMDA receptor antagonist;
non-narcotic analgesic
ambenoniumambenonium : A symmetrical oxalamide-based bis-quaternary ammonium ion having ethyl and 2-chlorobenzyl groups attached to the nitrogens.quaternary ammonium ionEC 3.1.1.8 (cholinesterase) inhibitor
arcaine1,4-diguanidinobutane : A guanidine derivative consisting of butane having guanidino groups at the 1- and 4-positions.

arcaine: RN given refers to parent cpd; structure
guanidines
benextraminebenextramine: RN given refers to parent cpd
benzo(a)pyreneBenzo(a)pyrene: A potent mutagen and carcinogen. It is a public health concern because of its possible effects on industrial workers, as an environmental pollutant, an as a component of tobacco smoke.

benzo[a]pyrene : An ortho- and peri-fused polycyclic arene consisting of five fused benzene rings.
ortho- and peri-fused polycyclic arenecarcinogenic agent;
mouse metabolite
berberinealkaloid antibiotic;
berberine alkaloid;
botanical anti-fungal agent;
organic heteropentacyclic compound
antilipemic drug;
antineoplastic agent;
antioxidant;
EC 1.1.1.141 [15-hydroxyprostaglandin dehydrogenase (NAD(+))] inhibitor;
EC 1.1.1.21 (aldehyde reductase) inhibitor;
EC 1.13.11.52 (indoleamine 2,3-dioxygenase) inhibitor;
EC 1.21.3.3 (reticuline oxidase) inhibitor;
EC 2.1.1.116 [3'-hydroxy-N-methyl-(S)-coclaurine 4'-O-methyltransferase] inhibitor;
EC 2.1.1.122 [(S)-tetrahydroprotoberberine N-methyltransferase] inhibitor;
EC 2.7.11.10 (IkappaB kinase) inhibitor;
EC 3.1.1.4 (phospholipase A2) inhibitor;
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
EC 3.1.1.8 (cholinesterase) inhibitor;
EC 3.1.3.48 (protein-tyrosine-phosphatase) inhibitor;
EC 3.4.14.5 (dipeptidyl-peptidase IV) inhibitor;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor;
geroprotector;
hypoglycemic agent;
metabolite;
potassium channel blocker
butenafinebutenafine : Trimethylamine in which hydrogen atoms attached to different methyl groups are substituted by 1-naphthyl and 4-tert-butylphenyl groups. It is an inhibitor of squalene epoxidase, an enzyme responsible for the creation of sterols needed in fungal cell membranes, and is used as its hydrochloride salt for treatment of dermatological fungal infections.

butenafine: studied on experimental dermatophytosis
naphthalenes;
tertiary amine
antifungal drug;
EC 1.14.13.132 (squalene monooxygenase) inhibitor
caffeinepurine alkaloid;
trimethylxanthine
adenosine A2A receptor antagonist;
adenosine receptor antagonist;
adjuvant;
central nervous system stimulant;
diuretic;
EC 2.7.11.1 (non-specific serine/threonine protein kinase) inhibitor;
EC 3.1.4.* (phosphoric diester hydrolase) inhibitor;
environmental contaminant;
food additive;
fungal metabolite;
geroprotector;
human blood serum metabolite;
mouse metabolite;
mutagen;
plant metabolite;
psychotropic drug;
ryanodine receptor agonist;
xenobiotic
chelerythrinechelerythrine : A benzophenanthridine alkaloid isolated from the root of Zanthoxylum simulans, Chelidonium majus L., and other Papaveraceae.benzophenanthridine alkaloid;
organic cation
antibacterial agent;
antineoplastic agent;
EC 2.7.11.13 (protein kinase C) inhibitor
chlorpromazinechlorpromazine : A substituted phenothiazine in which the ring nitrogen at position 10 is attached to C-3 of an N,N-dimethylpropanamine moiety.

Chlorpromazine: The prototypical phenothiazine antipsychotic drug. Like the other drugs in this class chlorpromazine's antipsychotic actions are thought to be due to long-term adaptation by the brain to blocking DOPAMINE RECEPTORS. Chlorpromazine has several other actions and therapeutic uses, including as an antiemetic and in the treatment of intractable hiccup.
organochlorine compound;
phenothiazines;
tertiary amine
anticoronaviral agent;
antiemetic;
dopaminergic antagonist;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor;
phenothiazine antipsychotic drug
ciglitazoneciglitazone : An aromatic ether that consists of 1,3-thiazolidine-2,4-dione with position 5 substituted by a 4-[(1-methylcyclohexyl)methoxy]benzyl group. A selective PPARgamma agonist.

ciglitazone: structure given in second source; PPAR agonist used for type II diabetes
aromatic ether;
thiazolidinone
antineoplastic agent;
insulin-sensitizing drug
citalopram1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-2-benzofuran-5-carbonitrile : A nitrile that is 1,3-dihydro-2-benzofuran-5-carbonitrile in which one of the hydrogens at position 1 is replaced by a p-fluorophenyl group, while the other is replaced by a 3-(dimethylamino)propyl group.

citalopram : A racemate comprising equimolar amounts of (R)-citalopram and its enantiomer, escitalopram. It is used as an antidepressant, although only escitalopram is active.

Citalopram: A furancarbonitrile that is one of the serotonin uptake inhibitors used as an antidepressant. The drug is also effective in reducing ethanol uptake in alcoholics and is used in depressed patients who also suffer from TARDIVE DYSKINESIA in preference to tricyclic antidepressants, which aggravate dyskinesia.
2-benzofurans;
cyclic ether;
nitrile;
organofluorine compound;
tertiary amino compound
cleboprideclebopride: antidopaminergic; RN given refers to parent cpd; structurepiperidines
clofibric acidclofibric acid : A monocarboxylic acid that is isobutyric acid substituted at position 2 by a p-chlorophenoxy group. It is a metabolite of the drug clofibrate.

Clofibric Acid: An antilipemic agent that is the biologically active metabolite of CLOFIBRATE.
aromatic ether;
monocarboxylic acid;
monochlorobenzenes
anticholesteremic drug;
antilipemic drug;
antineoplastic agent;
herbicide;
marine xenobiotic metabolite;
PPARalpha agonist
clotrimazoleconazole antifungal drug;
imidazole antifungal drug;
imidazoles;
monochlorobenzenes
antiinfective agent;
environmental contaminant;
xenobiotic
4-cresol4-cresol: RN given refers to parent cpd

p-cresol : A cresol that consists of toluene substituted by a hydroxy group at position 4. It is a metabolite of aromatic amino acid metabolism produced by intestinal microflora in humans and animals.
cresolEscherichia coli metabolite;
human metabolite;
uremic toxin
decamethoniumdecamethonium : A quaternary ammonium ion that is a depolarising muscle relaxant whose structure comprises a decane-1,10-diamine core in which each amino group carries three methyl substituents.

decamethonium: RN given refers to parent cpd
quaternary ammonium ionmuscle relaxant;
nicotinic acetylcholine receptor agonist
racemethorphan6-methoxy-11-methyl-1,3,4,9,10,10a-hexahydro-2H-10,4a-(epiminoethano)phenanthrene : An organic heterotetracyclic compound that is 1,3,4,9,10,10a-hexahydro-2H-10,4a-(epiminoethano)phenanthrene which is substituted by a methoxy group at position 6 and a methyl group at position 11.aromatic ether;
morphinane alkaloid;
morphinane-like compound;
organic heterotetracyclic compound
diazinondiazinon : A member of the class of pyrimidines that is pyrimidine carrying an isopropyl group at position 2, a methyl group at position 6 and a (diethoxyphosphorothioyl)oxy group at position 4.

Diazinon: A cholinesterase inhibitor that is used as an organothiophosphorus insecticide.
organic thiophosphate;
pyrimidines
acaricide;
agrochemical;
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
EC 3.1.1.8 (cholinesterase) inhibitor;
environmental contaminant;
nematicide;
xenobiotic
dichlorvosdichlorvos : An alkenyl phosphate that is the 2,2-dichloroethenyl ester of dimethyl phosphate.

Dichlorvos: An organophosphorus insecticide that inhibits ACETYLCHOLINESTERASE.
alkenyl phosphate;
dialkyl phosphate;
organochlorine acaricide;
organophosphate insecticide
anthelminthic drug;
antibacterial agent;
antifungal agent;
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
EC 3.1.1.8 (cholinesterase) inhibitor
benzophenonebenzophenone : The simplest member of the class of benzophenones, being formaldehyde in which both hydrogens are replaced by phenyl groups.benzophenonesphotosensitizing agent;
plant metabolite
donepezil2-[(1-benzylpiperidin-4-yl)methyl]-5,6-dimethoxyindan-1-one : A member of the class of indanones that is 5,6-dimethoxyindan-1-one which is substituted at position 2 by an (N-benzylpiperidin-4-yl)methyl group.

donepezil : A racemate comprising equimolar amounts of (R)- and (S)-donepezil. A centrally acting reversible acetylcholinesterase inhibitor, its main therapeutic use is in the treatment of Alzheimer's disease where it is used to increase cortical acetylcholine.

Donepezil: An indan and piperidine derivative that acts as a selective and reversible inhibitor of ACETYLCHOLINESTERASE. Donepezil is highly selective for the central nervous system and is used in the management of mild to moderate DEMENTIA in ALZHEIMER DISEASE.
aromatic ether;
indanones;
piperidines;
racemate
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
EC 3.1.1.8 (cholinesterase) inhibitor;
nootropic agent
dycloninearomatic ketone;
piperidines
topical anaesthetic
ebastineorganic molecular entity
ebselenebselen : A benzoselenazole that is 1,2-benzoselenazol-3-one carrying an additional phenyl substituent at position 2. Acts as a mimic of glutathione peroxidase.benzoselenazoleanti-inflammatory drug;
antibacterial agent;
anticoronaviral agent;
antifungal agent;
antineoplastic agent;
antioxidant;
apoptosis inducer;
EC 1.13.11.33 (arachidonate 15-lipoxygenase) inhibitor;
EC 1.13.11.34 (arachidonate 5-lipoxygenase) inhibitor;
EC 1.3.1.8 [acyl-CoA dehydrogenase (NADP(+))] inhibitor;
EC 1.8.1.12 (trypanothione-disulfide reductase) inhibitor;
EC 2.5.1.7 (UDP-N-acetylglucosamine 1-carboxyvinyltransferase) inhibitor;
EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor;
EC 3.1.3.25 (inositol-phosphate phosphatase) inhibitor;
EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor;
EC 3.5.4.1 (cytosine deaminase) inhibitor;
EC 5.1.3.2 (UDP-glucose 4-epimerase) inhibitor;
enzyme mimic;
ferroptosis inhibitor;
genotoxin;
hepatoprotective agent;
neuroprotective agent;
radical scavenger
econazole1-{2-(4-chlorobenzyloxy)-2-(2,4-dichlorophenyl)ethyl}imidazole : A member of the class of imidazoles that is 1-(2,4-dichlorophenyl)-2-(imidazol-1-yl)ethanol in which the hydroxyl hydrogen is replaced by a 4-chlorobenzyl group.

econazole : A racemate composed of equimolar amounts of (R)- and (S)-econazole. Used (as its nitrate salt) to treat skin infections such as athlete's foot, jock itch, ringworm and other fungal skin infections.

Econazole: An imidazole derivative that is commonly used as a topical antifungal agent.
dichlorobenzene;
ether;
imidazoles;
monochlorobenzenes
edrophoniumedrophonium : A quaternary ammonium ion that is N-ethyl-N,N-dimethylanilinium in which one of the meta positions is substituted by a hydroxy group. It is a reversible inhibitor of cholinesterase, with a rapid onset (30-60 seconds after injection) but a short duration of action (5-15 minutes). The chloride salt is used in myasthenia gravis both diagnostically and to distinguish between under- or over-treatment with other anticholinesterases. It has also been used for the reversal of neuromuscular blockade in anaesthesia, and for the management of poisoning due to tetrodotoxin, a neuromuscular blocking toxin found in puffer fish and other marine animals.

Edrophonium: A rapid-onset, short-acting cholinesterase inhibitor used in cardiac arrhythmias and in the diagnosis of myasthenia gravis. It has also been used as an antidote to curare principles.
phenols;
quaternary ammonium ion
antidote;
diagnostic agent;
EC 3.1.1.8 (cholinesterase) inhibitor
profenamineprofenamine : A member of the class of phenothiazines that is phenothiazine in which the hydrogen attached to the nitrogen is substituted by a 2-(diethylamino)propyl group. An antimuscarinic, it is used as the hydrochloride for the symptomatic treatment of Parkinson's disease.

profenamine: was heading 1972-94 (see under PHENOTHIAZINES 1972-90); use PHENOTHIAZINES to search ETHOPROPAZINE 1972-94
phenothiazines;
tertiary amino compound
adrenergic antagonist;
antidyskinesia agent;
antiparkinson drug;
histamine antagonist;
muscarinic antagonist
fenofibratePharmavit: a polyvitamin product, comprising vitamins A, D2, B1, B2, B6, C, E, nicotinamide, & calcium pantothene; may be a promising agent for application to human populations exposed to carcinogenic and genetic hazards of ionizing radiation; RN from CHEMLINEaromatic ether;
chlorobenzophenone;
isopropyl ester;
monochlorobenzenes
antilipemic drug;
environmental contaminant;
geroprotector;
xenobiotic
fluoxetinefluoxetine : A racemate comprising equimolar amounts of (R)- and (S)-fluoxetine. A selective serotonin reuptake inhibitor (SSRI), it is used (generally as the hydrochloride salt) for the treatment of depression (and the depressive phase of bipolar disorder), bullimia nervosa, and obsessive-compulsive disorder.

Fluoxetine: The first highly specific serotonin uptake inhibitor. It is used as an antidepressant and often has a more acceptable side-effects profile than traditional antidepressants.

N-methyl-3-phenyl-3-[4-(trifluoromethyl)phenoxy]propan-1-amine : An aromatic ether consisting of 4-trifluoromethylphenol in which the hydrogen of the phenolic hydroxy group is replaced by a 3-(methylamino)-1-phenylpropyl group.
(trifluoromethyl)benzenes;
aromatic ether;
secondary amino compound
gallamine triethiodidearomatic ether
harmalineharmaline : A harmala alkaloid in which the harman skeleton is methoxy-substituted at C-7 and has been reduced across the 3,4 bond.

Harmaline: A beta-carboline alkaloid isolated from seeds of PEGANUM.
harmala alkaloidoneirogen
hexachlorophenehexachlorophene : An organochlorine compound that is diphenylmethane in which each of the phenyl groups is substituted by chlorines at positions 2, 3, and 5, and by a hydroxy group at position 6. An antiseptic that is effective against Gram-positive organisms, it is used in soaps and creams for the treatment of various skin disorders. It is also used in agriculture as an acaricide and fungicide, but is not approved for such use within the European Union.

Hexachlorophene: A chlorinated bisphenol antiseptic with a bacteriostatic action against Gram-positive organisms, but much less effective against Gram-negative organisms. It is mainly used in soaps and creams and is an ingredient of various preparations used for skin disorders. (From Martindale, The Extra Pharmacopoeia, 30th ed, p797)
bridged diphenyl fungicide;
polyphenol;
trichlorobenzene
acaricide;
antibacterial agent;
antifungal agrochemical;
antiseptic drug
huprine xhuprine X: structure in first source
velnacrinevelnacrine: RN given refers to (+-)-isomer; RN for cpd without isomeric designation not available 8/88; structure in first source; potential Alzheimer's disease drug but trial halted due to abnormal liver testsacridines
ibuprofenMidol: combination of cinnamedrine, phenacetin, aspirin & caffeinemonocarboxylic acidantipyretic;
cyclooxygenase 1 inhibitor;
cyclooxygenase 2 inhibitor;
drug allergen;
environmental contaminant;
geroprotector;
non-narcotic analgesic;
non-steroidal anti-inflammatory drug;
radical scavenger;
xenobiotic
ifenprodilifenprodil: NMDA receptor antagonistpiperidines
ketamineketamine : A member of the class of cyclohexanones in which one of the hydrogens at position 2 is substituted by a 2-chlorophenyl group, while the other is substituted by a methylamino group.

Ketamine: A cyclohexanone derivative used for induction of anesthesia. Its mechanism of action is not well understood, but ketamine can block NMDA receptors (RECEPTORS, N-METHYL-D-ASPARTATE) and may interact with sigma receptors.
cyclohexanones;
monochlorobenzenes;
secondary amino compound
analgesic;
environmental contaminant;
intravenous anaesthetic;
neurotoxin;
NMDA receptor antagonist;
xenobiotic
kynurenic acidkynurenic acid : A quinolinemonocarboxylic acid that is quinoline-2-carboxylic acid substituted by a hydroxy group at C-4.

Kynurenic Acid: A broad-spectrum excitatory amino acid antagonist used as a research tool.
monohydroxyquinoline;
quinolinemonocarboxylic acid
G-protein-coupled receptor agonist;
human metabolite;
neuroprotective agent;
nicotinic antagonist;
NMDA receptor antagonist;
Saccharomyces cerevisiae metabolite
memantineadamantanes;
primary aliphatic amine
antidepressant;
antiparkinson drug;
dopaminergic agent;
neuroprotective agent;
NMDA receptor antagonist
methoctraminearomatic ether;
tetramine
muscarinic antagonist
methoxsalenmethoxsalen : A member of the class of psoralens that is 7H-furo[3,2-g]chromen-7-one in which the 9 position is substituted by a methoxy group. It is a constituent of the fruits of Ammi majus. Like other psoralens, trioxsalen causes photosensitization of the skin. It is administered topically or orally in conjunction with UV-A for phototherapy treatment of vitiligo and severe psoriasis.

Methoxsalen: A naturally occurring furocoumarin compound found in several species of plants, including Psoralea corylifolia. It is a photoactive substance that forms DNA ADDUCTS in the presence of ultraviolet A irradiation.
aromatic ether;
psoralens
antineoplastic agent;
cross-linking reagent;
dermatologic drug;
photosensitizing agent;
plant metabolite
3,7-bis(dimethylamino)phenothiazin-5-ium3,7-bis(dimethylamino)phenothiazin-5-ium : An organic cation that is phenothiazin-5-ium substituted by dimethylamino groups at positions 3 and 7. The chloride salt is the histological dye 'methylene blue'.organic cation
metoclopramidemetoclopramide : A member of the class of benzamides resulting from the formal condensation of 4-amino-5-chloro-2-methoxybenzoic acid with the primary amino group of N,N-diethylethane-1,2-diamine.

Metoclopramide: A dopamine D2 antagonist that is used as an antiemetic.
benzamides;
monochlorobenzenes;
substituted aniline;
tertiary amino compound
antiemetic;
dopaminergic antagonist;
environmental contaminant;
gastrointestinal drug;
xenobiotic
miconazole1-[2-(2,4-dichlorobenzyloxy)-2-(2,4-dichlorophenyl)ethyl]imidazole : A member of the class of imidazoles that is 1-(2,4-dichlorophenyl)-2-(imidazol-1-yl)ethanol in which the hydroxyl hydrogen is replaced by a 2,4-dichlorobenzyl group.

miconazole : A racemate composed of equimolar amounts of (R)- and (S)-miconazole. Used (as its nitrate salt) to treat skin infections such as athlete's foot, jock itch, ringworm and other fungal skin infections. It inhibits the synthesis of ergosterol, a critical component of fungal cell membranes.

Miconazole: An imidazole antifungal agent that is used topically and by intravenous infusion.
dichlorobenzene;
ether;
imidazoles
minaprineminaprine: Agr 1240 refers to di-HCl; short-acting type A MAO inhibitor (MAOI) of mild potency; structuremorpholines;
pyridazines;
secondary amine
antidepressant;
antiparkinson drug;
cholinergic drug;
dopamine uptake inhibitor;
serotonin uptake inhibitor
clorgylineclorgyline : An aromatic ether that is the 2,4-dichlorophenyl ether of 3-aminopropan-1-ol in which the nitrogen is substituted by a methyl group and a prop-1-yn-3-yl group. A monoamine oxidase inhibitor, it was formerly used as an antidepressant.

Clorgyline: An antidepressive agent and monoamine oxidase inhibitor related to PARGYLINE.
aromatic ether;
dichlorobenzene;
terminal acetylenic compound;
tertiary amino compound
antidepressant;
EC 1.4.3.4 (monoamine oxidase) inhibitor
nefazodonenefazodone: may be useful as an opiate adjunctaromatic ether;
monochlorobenzenes;
N-alkylpiperazine;
N-arylpiperazine;
triazoles
alpha-adrenergic antagonist;
analgesic;
antidepressant;
serotonergic antagonist;
serotonin uptake inhibitor
neostigmineneostigmine : A quaternary ammonium ion comprising an anilinium ion core having three methyl substituents on the aniline nitrogen, and a 3-[(dimethylcarbamoyl)oxy] substituent at position 3. It is a parasympathomimetic which acts as a reversible acetylcholinesterase inhibitor.

Neostigmine: A cholinesterase inhibitor used in the treatment of myasthenia gravis and to reverse the effects of muscle relaxants such as gallamine and tubocurarine. Neostigmine, unlike PHYSOSTIGMINE, does not cross the blood-brain barrier.
quaternary ammonium ionantidote to curare poisoning;
EC 3.1.1.7 (acetylcholinesterase) inhibitor
nizatidine1,3-thiazoles;
C-nitro compound;
carboxamidine;
organic sulfide;
tertiary amino compound
anti-ulcer drug;
cholinergic drug;
H2-receptor antagonist
orphenadrineorphenadrine : A tertiary amino compound which is the phenyl-o-tolylmethyl ether of 2-(dimethylamino)ethanol.

Orphenadrine: A muscarinic antagonist used to treat drug-induced parkinsonism and to relieve pain from muscle spasm.
ether;
tertiary amino compound
antidyskinesia agent;
antiparkinson drug;
H1-receptor antagonist;
muscarinic antagonist;
muscle relaxant;
NMDA receptor antagonist;
parasympatholytic
quinone1,4-benzoquinone : The simplest member of the class of 1,4-benzoquinones, obtained by the formal oxidation of hydroquinone to the corresponding diketone. It is a metabolite of benzene.

benzoquinone : The simplest members of the class of benzoquinones, consisting of cyclohexadiene which is substituted by two oxo groups.

quinone : Compounds having a fully conjugated cyclic dione structure, such as that of benzoquinones, derived from aromatic compounds by conversion of an even number of -CH= groups into -C(=O)- groups with any necessary rearrangement of double bonds (polycyclic and heterocyclic analogues are included).
1,4-benzoquinonescofactor;
human xenobiotic metabolite;
mouse metabolite
papaverinepapaverine : A benzylisoquinoline alkaloid that is isoquinoline substituted by methoxy groups at positions 6 and 7 and a 3,4-dimethoxybenzyl group at position 1. It has been isolated from Papaver somniferum.

Papaverine: An alkaloid found in opium but not closely related to the other opium alkaloids in its structure or pharmacological actions. It is a direct-acting smooth muscle relaxant used in the treatment of impotence and as a vasodilator, especially for cerebral vasodilation. The mechanism of its pharmacological actions is not clear, but it apparently can inhibit phosphodiesterases and it may have direct actions on calcium channels.
benzylisoquinoline alkaloid;
dimethoxybenzene;
isoquinolines
antispasmodic drug;
vasodilator agent
pentamidinepentamidine : A diether consisting of pentane-1,5-diol in which both hydroxyl hydrogens have been replaced by 4-amidinophenyl groups. A trypanocidal drug that is used for treatment of cutaneous leishmaniasis and Chagas disease.

Pentamidine: Antiprotozoal agent effective in trypanosomiasis, leishmaniasis, and some fungal infections; used in treatment of PNEUMOCYSTIS pneumonia in HIV-infected patients. It may cause diabetes mellitus, central nervous system damage, and other toxic effects.
aromatic ether;
carboxamidine;
diether
anti-inflammatory agent;
antifungal agent;
calmodulin antagonist;
chemokine receptor 5 antagonist;
EC 2.3.1.48 (histone acetyltransferase) inhibitor;
NMDA receptor antagonist;
S100 calcium-binding protein B inhibitor;
trypanocidal drug;
xenobiotic
pentoxifyllineoxopurine
1,3a,8-Trimethyl-1,2,3,3a,8,8a-hexahydropyrrolo[2,3-b]indol-5-yl methylcarbamatepyrroloindole
duodoteduodote: consists of atropine and pralidoxime chloride; for treating those exposed to organophosphorus-containing nerve agentspyridinium ionantidote to organophosphate poisoning;
antidote to sarin poisoning;
cholinergic drug;
cholinesterase reactivator
primaquineprimaquine : An N-substituted diamine that is pentane-1,4-diamine substituted by a 6-methoxyquinolin-8-yl group at the N(4) position. It is a drug used in the treatment of malaria and Pneumocystis pneumonia.

Primaquine: An aminoquinoline that is given by mouth to produce a radical cure and prevent relapse of vivax and ovale malarias following treatment with a blood schizontocide. It has also been used to prevent transmission of falciparum malaria by those returning to areas where there is a potential for re-introduction of malaria. Adverse effects include anemias and GI disturbances. (From Martindale, The Extra Pharmacopeia, 30th ed, p404)
aminoquinoline;
aromatic ether;
N-substituted diamine
antimalarial
procainamideprocainamide : A benzamide that is 4-aminobenzamide substituted on the amide N by a 2-(diethylamino)ethyl group. It is a pharmaceutical antiarrhythmic agent used for the medical treatment of cardiac arrhythmias.

Procainamide: A class Ia antiarrhythmic drug that is structurally-related to PROCAINE.
benzamidesanti-arrhythmia drug;
platelet aggregation inhibitor;
sodium channel blocker
procyclidineprocyclidine : A tertiary alcohol that consists of propan-1-ol substituted by a cyclohexyl and a phenyl group at position 1 and a pyrrolidin-1-yl group at position 3.

Procyclidine: A muscarinic antagonist that crosses the blood-brain barrier and is used in the treatment of drug-induced extrapyramidal disorders and in parkinsonism.
pyrrolidines;
tertiary alcohol
antidyskinesia agent;
antiparkinson drug;
muscarinic antagonist
propentofyllineoxopurine
propidiumPropidium: Quaternary ammonium analog of ethidium; an intercalating dye with a specific affinity to certain forms of DNA and, used as diiodide, to separate them in density gradients; also forms fluorescent complexes with cholinesterase which it inhibits.phenanthridines;
quaternary ammonium ion
fluorochrome;
intercalator
propoxurpropoxur : A carbamate ester that is phenyl methylcarbamate substituted at position 2 by a propan-2-yloxy group.

Propoxur: A carbamate insecticide.
aromatic ether;
carbamate ester
acaricide;
agrochemical;
carbamate insecticide;
EC 3.1.1.7 (acetylcholinesterase) inhibitor
protopinedibenzazecine alkaloidplant metabolite
pyridostigminepyridinium ion
raloxifeneraloxifene : A member of the class of 1-benzothiophenes that is 1-benzothiophene in which the hydrogens at positions 2, 3, and 6 have been replaced by p-hydroxyphenyl, p-[2-(piperidin-1-yl)ethoxy]benzoyl, and hydroxy groups, respectively.1-benzothiophenes;
aromatic ketone;
N-oxyethylpiperidine;
phenols
bone density conservation agent;
estrogen antagonist;
estrogen receptor modulator
ranitidinearalkylamine
sanguinarinebenzophenanthridine alkaloid : A specific group of isoquinoline alkaloids that occur only in higher plants and are constituents mainly of the Papaveraceae family.alkaloid antibiotic;
benzophenanthridine alkaloid;
botanical anti-fungal agent
sulfanilamidesubstituted aniline;
sulfonamide;
sulfonamide antibiotic
antibacterial agent;
drug allergen;
EC 4.2.1.1 (carbonic anhydrase) inhibitor
tetraisopropylpyrophosphamideTetraisopropylpyrophosphamide: N,N',N'',N'''-Tetraisopropylpyrophosphamide. A specific inhibitor of pseudocholinesterases. It is commonly used experimentally to determine whether pseudo- or acetylcholinesterases are involved in an enzymatic process.phosphoramide
donepezil hydrochloridedonepezil hydrochloride : A racemate comprising equimolar amounts of (R)- and (S)- donepezil hydrochloride. Its main therapeutic use is in the treatment of Alzheimer's disease where it is used to increase cortical acetylcholine.
isoproterenol hydrochloridecatechols
neostigmine methylsulfatearylammonium sulfate saltEC 3.1.1.8 (cholinesterase) inhibitor
cysteinecysteine;
cysteine zwitterion;
L-alpha-amino acid;
proteinogenic amino acid;
serine family amino acid
EC 4.3.1.3 (histidine ammonia-lyase) inhibitor;
flour treatment agent;
human metabolite
isoflurophateIsoflurophate: A di-isopropyl-fluorophosphate which is an irreversible cholinesterase inhibitor used to investigate the NERVOUS SYSTEM.dialkyl phosphate
aspartic acidaspartic acid : An alpha-amino acid that consists of succinic acid bearing a single alpha-amino substituent

Aspartic Acid: One of the non-essential amino acids commonly occurring in the L-form. It is found in animals and plants, especially in sugar cane and sugar beets. It may be a neurotransmitter.

L-aspartic acid : The L-enantiomer of aspartic acid.
aspartate family amino acid;
aspartic acid;
L-alpha-amino acid;
proteinogenic amino acid
Escherichia coli metabolite;
mouse metabolite;
neurotransmitter
physostigminePhysostigmine: A cholinesterase inhibitor that is rapidly absorbed through membranes. It can be applied topically to the conjunctiva. It also can cross the blood-brain barrier and is used when central nervous system effects are desired, as in the treatment of severe anticholinergic toxicity.carbamate ester;
indole alkaloid
antidote to curare poisoning;
EC 3.1.1.8 (cholinesterase) inhibitor;
miotic
n,n-dimethyltryptamineN,N-dimethyltryptamine : A tryptamine derivative having two N-methyl substituents on the side-chain.

N,N-Dimethyltryptamine: An N-methylated indoleamine derivative and serotonergic hallucinogen which occurs naturally and ubiquitously in several plant species including Psychotria veridis. It also occurs in trace amounts in mammalian brain, blood, and urine, and is known to act as an agonist or antagonist of certain SEROTONIN RECEPTORS.
tryptamine alkaloid;
tryptamines
berlition(R)-lipoic acid : The (R)-enantiomer of lipoic acid. A vitamin-like, C8 thia fatty acid with anti-oxidant properties.

berlition: antioxidant preparation containing alpha-lipoic acid, used in the neuroprotective therapy of chronic brain ischemia for correction of free-radical processes

lipoic acid : A heterocyclic thia fatty acid comprising pentanoic acid with a 1,2-dithiolan-3-yl group at the 5-position.
dithiolanes;
heterocyclic fatty acid;
lipoic acid;
thia fatty acid
cofactor;
nutraceutical;
prosthetic group
ficusinFicusin: A naturally occurring furocoumarin, found in PSORALEA. After photoactivation with UV radiation, it binds DNA via single and double-stranded cross-linking.

psoralen : The simplest member of the class of psoralens that is 7H-furo[3,2-g]chromene having a keto group at position 7. It has been found in plants like Psoralea corylifolia and Ficus salicifolia.
psoralensplant metabolite
phencyclidinephencyclidine : A member of the class of piperidines that is piperidine in which the nitrogen is substituted with a 1-phenylcyclohexyl group. Formerly used as an anaesthetic agent, it exhibits both hallucinogenic and neurotoxic effects.

Phencyclidine: A hallucinogen formerly used as a veterinary anesthetic, and briefly as a general anesthetic for humans. Phencyclidine is similar to KETAMINE in structure and in many of its effects. Like ketamine, it can produce a dissociative state. It exerts its pharmacological action through inhibition of NMDA receptors (RECEPTORS, N-METHYL-D-ASPARTATE). As a drug of abuse, it is known as PCP and Angel Dust.
benzenes;
piperidines
anaesthetic;
neurotoxin;
NMDA receptor antagonist;
psychotropic drug
tabuntabun: proposed as military nerve gas and exptl cholinesterase inhibitor; extremely poisonous; structure
acenaphthenequinoneacenaphthoquinone : An orthoquinone that is the 1,2-dioxo derivative of acenaphthene.orthoquinoneschain carrier;
epitope
9,10-phenanthrenequinone9,10-phenanthrenequinone: structurephenanthrenes
5-bromoisatinindolesanticoronaviral agent
isatintribulin: endogenous MONOAMINE OXIDASE inhibitory activity extractable into ethyl acetate found in brain and many mammalian tissues and fluids; ISATIN is a major component; produced in excess following alcohol withdrawal;indoledioneEC 1.4.3.4 (monoamine oxidase) inhibitor;
plant metabolite
2-xylene2-xylene: RN given refers to parent cpd

o-xylene : A xylene substituted by methyl groups at positions 1 and 2.
xylene
3-nitrotoluenemononitrotoluene
4-nitrotoluene4-nitrotoluene : A mononitrotoluene that consists of toluene bearing a nitro substituent at the 4-position.

4-nitrotoluene: RN given refers to parent cpd; structure in Merck Index, 9th ed, #6470

mononitrotoluene : A nitrotoluene bearing a single nitro substituent at any position. A "closed class".
mononitrotoluene
pyridostigmine bromidePyridostigmine Bromide: A cholinesterase inhibitor with a slightly longer duration of action than NEOSTIGMINE. It is used in the treatment of myasthenia gravis and to reverse the actions of muscle relaxants.pyridinium salt
4-methyl anisolemethoxybenzenes
4-xylenep-xylene : A xylene with methyl groups at positions 1 and 4.xylene
4-toluidine4-toluidine: RN given refers to parent cpd

p-toluidine : An aminotoluene in which the amino substituent is para to the methyl group.
aminotoluene
3-xylenem-xylene : A xylene carrying methyl groups at positions 1 and 3.xylene
neostigmine bromideneostigmine bromide : The bromide salt of neostigmine.bromide salt
edrophonium chlorideedrophonium chloride : The chloride salt of edrophonium. A reversible inhibitor of cholinesterase with a rapid onset (30-60 seconds after injection) but a short duration of action (5-15 minutes), it is used in myasthenia gravis both diagnostically and to distinguish between under- or over-treatment with other anticholinesterases. It has also been used for the reversal of neuromuscular blockade in anaesthesia, and for the management of poisoning due to tetrodotoxin, a neuromuscular blocking toxin found in puffer fish and other marine animals.chloride salt;
quaternary ammonium salt
antidote;
diagnostic agent;
EC 3.1.1.8 (cholinesterase) inhibitor
chloranilChloranil: A quinone fungicide used for treatment of seeds and foliage.

tetrachloro-1,4-benzoquinone : A member of the class of 1,4-benzoquiones that is 1,4-benzoquinone in which all four hydrogens are substituted by chlorines.
1,4-benzoquinones;
organochlorine compound
EC 2.7.1.33 (pantothenate kinase) inhibitor;
metabolite
benzoinbenzoins;
secondary alpha-hydroxy ketone
EC 3.1.1.1 (carboxylesterase) inhibitor
dibenzoylmethanedibenzoylmethane : A beta-diketone that is acetylacetone (acac) in which both methyl groups have been replaced by phenyl groups. It is a minor constituent of the root extract of licorice (Glycyrrhiza glabra) and exhibits antimutagenic and anticancer effects.aromatic ketone;
beta-diketone
antimutagen;
antineoplastic agent;
metabolite
benzethonium chloridebenzethonium chloride : A (synthetic) quaternary ammonium salt that is benzyldimethylamine in which the nitrogen is quaternised by a 2-{2-[p-(2,4,4-trimethylpentan-2-yl)phenoxy]ethoxy}ethyl group, with chloride as the counter-ion. An antiseptic and disinfectant, it is active against a broad spectrum of bacteria, fungi, moulds and viruses.aromatic ether;
chloride salt;
quaternary ammonium salt
antibacterial agent;
antifungal agent;
antiseptic drug;
antiviral agent;
disinfectant
benzilbenzil : An alpha-diketone that is ethane-1,2-dione substituted by phenyl groups at positions 1 and 2 respectively.

benzil: structure
alpha-diketone;
aromatic ketone
sterogenolcetylpyridinium bromide : A pyridinium salt that has N-hexadecylpyridinium as the cation and bromide as the anion.

hexadecylpyridinium bromide: structure in first source
bromide salt;
pyridinium salt
antiseptic drug;
EC 2.7.11.18 (myosin-light-chain kinase) inhibitor;
surfactant
acridinesacridine : A polycyclic heteroarene that is anthracene in which one of the central CH groups is replaced by a nitrogen atom.

Acridines: Compounds that include the structure of acridine.
acridines;
mancude organic heterotricyclic parent;
polycyclic heteroarene
genotoxin
edrophonium bromide
paraoxonaryl dialkyl phosphate;
organophosphate insecticide
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
mouse metabolite
galantamineGalantamine: A benzazepine derived from norbelladine. It is found in GALANTHUS and other AMARYLLIDACEAE. It is a cholinesterase inhibitor that has been used to reverse the muscular effects of GALLAMINE TRIETHIODIDE and TUBOCURARINE and has been studied as a treatment for ALZHEIMER DISEASE and other central nervous system disorders.

galanthamine : A benzazepine alkaloid isolated from certain species of daffodils.
benzazepine alkaloid;
benzazepine alkaloid fundamental parent;
organic heterotetracyclic compound;
tertiary amino compound
antidote to curare poisoning;
cholinergic drug;
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
EC 3.1.1.8 (cholinesterase) inhibitor;
plant metabolite
benzenaminium, 4,4'-(3-oxo-1,5-pentanediyl)bis(n,n-dimethyl-n-2-propenyl-), dibromideBenzenaminium, 4,4'-(3-oxo-1,5-pentanediyl)bis(N,N-dimethyl-N-2-propenyl-), Dibromide: Proposed cholinesterase inhibitor.
rheindihydroxyanthraquinone
vasicinonevasicinone: isolated from Adhatoda vasica; structure given in first source
carvacrolcarvacrol : A phenol that is a natural monoterpene derivative of cymene. An inhibitor of bacterial growth, it is used as a food additive. Potent activator of the human ion channels transient receptor potential V3 (TRPV3) and A1 (TRPA1).botanical anti-fungal agent;
p-menthane monoterpenoid;
phenols
agrochemical;
antimicrobial agent;
flavouring agent;
TRPA1 channel agonist;
volatile oil component
1,3-cyclohexanedione1,3-cyclohexanedione: structure

cyclohexane-1,3-dione : A cyclohexanedione carrying oxo substituents at positions 1 and 3.
beta-diketone;
cyclohexanedione
dibromsalicildibromsalicil: brominated salicyclic acid deriv; antiplaque antiseptic
1,2-naphthoquinone1,2-naphthoquinone : The parent structure of the family of 1,2-naphthoquinones, in which the oxo groups of the quinone moiety are at positions 1 and 2 of the naphthalene ring. It is a metabolite of naphthalene and is found in diesel exhaust particles.

naphthalene-1,2-dione: structure given in first source
1,2-naphthoquinonesaryl hydrocarbon receptor agonist;
carcinogenic agent
decamethonium dibromide
gentian violetcrystal violet : An organic chloride salt that is the monochloride salt of crystal violet cation. It has been used in creams for the topical treatment of bacterial and fungal infections, being effective against some Gram-positive bacteria (notably Staphylococcus species) and some pathogenic fungi (including Candida species) but use declined following reports of animal carcinogenicity. It has also been used for dying wood, silk, and paper, as well as a histological stain.

Gentian Violet: A dye that is a mixture of violet rosanilinis with antibacterial, antifungal, and anthelmintic properties.
organic chloride saltanthelminthic drug;
antibacterial agent;
antifungal agent;
antiseptic drug;
histological dye
jkl 1073a8-oxoberberine: structure given in first source
1-acetylisatin1-acetylisatin: structure in first sourceindoledione
1-phenyl-1,2-propanedione1-phenyl-1,2-propanedione : An alpha-diketone that consists of 1-phenylpropane bearing keto substituents at positions 1 and 2. It is found in coffee.

1-phenyl-1,2-propanedione: an oxoglutarate carrier antagonist
alpha-diketone;
aromatic ketone
plant metabolite
2,3-pentanedionepentane-2,3-dione : An alpha-diketone that is pentane substituted at the 2- and 3-positions by oxo groups.alpha-diketone;
methyl ketone
flavouring agent
5-methylisatin5-methylisatin: structure in first source
Berberine chloride (TN)organic molecular entity
1,2-cyclohexanedionecyclohexane-1,2-dione : A cyclohexanedione carrying oxo substituents at positions 1 and 2.

cyclohexanedione : Cyclohexanones carrying two oxo substituents.
cyclohexanedione
ethylestrenolethylestrenol : A 17beta-hydroxy steroid that is estrane containing a double bond between positions 4 and 5 and substituted by an ethyl group and a hydroxy group at the 17alpha and 17beta positions, respectively. It is an anabolic steroid that has little androgenic effect and only slight progestational activity. It has been used to promote growth in boys with delayed bone growth.

Ethylestrenol: An anabolic steroid with some progestational activity and little androgenic effect.
17beta-hydroxy steroid;
tertiary alcohol
anabolic agent
chlormequatchlormequat : A quaternary ammonium ion that is choline in which the hydroxy group has been replaced by a chlorine. Its salts (particularly the chloride salt, known as chlormequat chloride) are used as plant growth retardants.

Chlormequat: A plant growth regulator that is commonly used on ornamental plants.
quaternary ammonium ionplant growth retardant
3-hydroxyphenyltrimethylammonium3-hydroxyphenyltrimethylammonium: RN given refers to parent cpd; structure
4-octylphenol4-octylphenol : A member of the class of phenols that is phenol which is substituted at the para- position by an octyl group.

4-octylphenol: xenoestrogen
phenolsmetabolite;
surfactant;
xenoestrogen
n-methylisatinN-methylisatin: structure given in first source
thioflavin tthioflavin T cation : A benzothiazolium ion obtained by methylation of the thiazole nitrogen of 2-[4-(dimethylamino)phenyl]-6-methyl-1,3-benzothiazole; the cationic component of thioflavin T.benzothiazolium ion
butyrylcholinebutyrylcholine: RN given refers to parent cpdacylcholine
palmatineburasaine: structure in first sourceberberine alkaloid;
organic heterotetracyclic compound
plant metabolite
9-amino-6-chloro-2-methoxyacridine
butyrylthiocholinebutyrylthiocholine : A quaternary ammonium ion obtained by the formal condensation of the carboxy group of butyric acid with the thiol group of thiocholine. It is used as a reagent for determination of butyrylcholinesterase activity.

Butyrylthiocholine: A sulfur-containing analog of butyrylcholine which is hydrolyzed by butyrylcholinesterase to butyrate and thiocholine. It is used as a reagent in the determination of butyrylcholinesterase activity.
quaternary ammonium ion
imidocarbImidocarb: One of ANTIPROTOZOAL AGENTS used especially against BABESIA in livestock. Toxicity has been reported.ureasantiprotozoal drug
n-methylacridineN-methylacridine: RN given refers to acridinium parent cpd
selegilineSelegiline: A selective, irreversible inhibitor of Type B monoamine oxidase that is used for the treatment of newly diagnosed patients with PARKINSON DISEASE, and for the treatment of depressive disorders. The compound without isomeric designation is Deprenyl.selegiline;
terminal acetylenic compound
geroprotector
2,3-dihydroxyquinoxaline2,3-dihydroxyquinoxaline: fluorescent oxalic acid deriv.
metergolinemetergoline : An ergoline alkaloid that is the N-benzyloxycarbonyl derivative of lysergamine. A 5-HT2 antagonist. Also 5-HT1 antagonist and 5-HT1D ligand. Has moderate affinity for 5-HT6 and high affinity for 5-HT7.

Metergoline: A dopamine agonist and serotonin antagonist. It has been used similarly to BROMOCRIPTINE as a dopamine agonist and also for MIGRAINE DISORDERS therapy.
carbamate ester;
ergoline alkaloid
dopamine agonist;
geroprotector;
serotonergic antagonist
acetylacetoneacetylacetone : A beta-diketone that is pentane in which the hydrogens at positions 2 and 4 are replaced by oxo groups.beta-diketone
glutamic acidglutamic acid : An alpha-amino acid that is glutaric acid bearing a single amino substituent at position 2.

Glutamic Acid: A non-essential amino acid naturally occurring in the L-form. Glutamic acid is the most common excitatory neurotransmitter in the CENTRAL NERVOUS SYSTEM.
glutamic acid;
glutamine family amino acid;
L-alpha-amino acid;
proteinogenic amino acid
Escherichia coli metabolite;
ferroptosis inducer;
micronutrient;
mouse metabolite;
neurotransmitter;
nutraceutical
thiocholineThiocholine: A mercaptocholine used as a reagent for the determination of CHOLINESTERASES. It also serves as a highly selective nerve stain.
5-Methoxyisatinindolesanticoronaviral agent
bezafibratearomatic ether;
monocarboxylic acid;
monocarboxylic acid amide;
monochlorobenzenes
antilipemic drug;
environmental contaminant;
geroprotector;
xenobiotic
6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acidchromanol;
monocarboxylic acid;
phenols
antioxidant;
ferroptosis inhibitor;
neuroprotective agent;
radical scavenger;
Wnt signalling inhibitor
closantelclosantel : A racemate comprising equimolar amounts of (R)- and (S)-clostanel. An anthelmintic, it is used (as the dihydrate of the sodium salt) in veterinary medicine for the treatment of fluke and nematode infections.

closantel: structure

N-{5-chloro-4-[(4-chlorophenyl)(cyano)methyl]-2-methylphenyl}-2-hydroxy-3,5-diiodobenzamide : An aromatic amide resulting from the formal condensation of the carboxy group of 3,5-diiodosalicylic acid with the amino group of aniline substituted at positions 2, 4, and 5 by methyl, (4-chlorophenyl)(cyano)methyl, and methyl groups respectively.
aromatic amide;
monocarboxylic acid amide;
monochlorobenzenes;
nitrile;
organoiodine compound;
phenols
bambuterolbambuterol : A carbamate ester that is terbutaline in which both of the phenolic hydroxy groups have been protected as the corresponding N,N-dimethylcarbamates. A long acting beta-adrenoceptor agonist used in the treatment of asthma, it is a prodrug for terbutaline.

bambuterol: selective inhibitor of butyrylcholinesterase & acetylcholinesterase
carbamate ester;
phenylethanolamines
anti-asthmatic drug;
beta-adrenergic agonist;
bronchodilator agent;
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
prodrug;
sympathomimetic agent;
tocolytic agent
eliprodil1-(4-chlorophenyl)-2-[4-(4-fluorobenzyl)piperidin-1-yl]ethanol : A member of the class of piperidines that is piperidine substituted by a 2-(4-chlorophenyl)-2-hydroxyethyl group at position 1 and by a 4-fluorobenzyl group at position 4.monochlorobenzenes;
monofluorobenzenes;
piperidines;
secondary alcohol;
tertiary amino compound
zifrosilonezifrosilone: an acetylcholinesterase inhibitor; being developed as a possible treatment of Alzheimer's disease; structure given in first source
irinotecancarbamate ester;
delta-lactone;
N-acylpiperidine;
pyranoindolizinoquinoline;
ring assembly;
tertiary alcohol;
tertiary amino compound
antineoplastic agent;
apoptosis inducer;
EC 5.99.1.2 (DNA topoisomerase) inhibitor;
prodrug
3-methyl-1,2-cyclopentanedione3-methyl-1,2-cyclopentanedione: a peroxynitrite scavenger isolated from coffee extract; structure in first sourcecyclic ketone
fenofibric acidfenofibric acid : A monocarboxylic acid that is 2-methylpropanoic acid substituted by a 4-(4-chlorobenzoyl)phenoxy group at position 2. It is a metabolite of the drug fenofibrate.

fenofibric acid: RN given refers to parent cpd without isomeric designation; structure
aromatic ketone;
chlorobenzophenone;
monocarboxylic acid
drug metabolite;
marine xenobiotic metabolite
25-hydroxycholesterol25-hydroxy steroid;
oxysterol
human metabolite
xanthyletinexanthyletine: structurecoumarins
pralidoxime iodideorganic iodide salt;
pyridinium salt
cholinergic drug;
cholinesterase reactivator
geneserinegeneserine: structure given in first sourceindoles
physostigmine heptylphysostigmine heptyl: RN given for (3aS-cis)-isomer; structure given in first source; possible use in therapy of Alzheimer's disease
isoimperatorinisoimperatorin : A member of the class of psoralens that is psoralen substituted by a prenyloxy group at position 5. Isolated from Angelica dahurica and Angelica koreana, it acts as a acetylcholinesterase inhibitor.

isoimperatorin: tumor necrosis factor antagonist isolated from Glehniae root
psoralensEC 3.1.1.7 (acetylcholinesterase) inhibitor;
metabolite
alpha-furilalpha-furil: structure in first source
3,4-dimethoxytoluene3,4-dimethoxytoluene: structure given in first source
2,3-trimethylene-4-quinazolone2,3-trimethylene-4-quinazolone: structure in first sourcequinazolines
budipinebudipine: RN given refers to parent cpd; structure in Negwer, 5th ed, #6541diarylmethane
4-benzoylbenzoic acid4-carboxybenzophenone: a photosensitizer agent
adrenoglomerulotropinadrenoglomerulotropin: aldosterone stimulating hormone found in extracts of pineal gland; structure
sr 95191SR 95191: structure given in first source
hesperetin3'-hydroxyflavanones;
4'-methoxyflavanones;
monomethoxyflavanone;
trihydroxyflavanone
antineoplastic agent;
antioxidant;
plant metabolite
chelerythrine chloride
lycorinelycorine : An indolizidine alkaloid that is 3,12-didehydrogalanthan substituted by hydroxy groups at positions and 2 and a methylenedioxy group across positions 9 and 10. Isolated from Crinum asiaticum, it has been shown to exhibit antimalarial activity.

lycorine: from bulbs of LYCORIS & other plants; RN given refers to (1 alpha,2 beta)-isomer; structure in Merck Index, 9th ed, #5444
indolizidine alkaloidanticoronaviral agent;
antimalarial;
plant metabolite;
protein synthesis inhibitor
1,10-phenanthroline-5,6-dione1,10-phenanthroline-5,6-dione: has antineoplastic, intercalating, and trypanocidal activities; structure given in first source
1,2,3,6-tetragalloylglucose1,2,3,6-tetragalloylglucose: structure given in first source

1,2,3,6-tetrakis-O-galloyl-beta-D-glucose : A galloyl-beta-D-glucose compound having four galloyl groups in the 1-, 2-, 3- and 6-positions.
gallate ester;
galloyl beta-D-glucose
nodakeninnodakenin: RN given for (R)-isomer; has anti-inflammatory propertiesfuranocoumarin
2-chloranil
3,5-di-tert-butyl-1,2-benzoquinone
rivastigminecarbamate ester;
tertiary amino compound
cholinergic drug;
EC 3.1.1.8 (cholinesterase) inhibitor;
neuroprotective agent
rosiglitazoneaminopyridine;
thiazolidinediones
EC 6.2.1.3 (long-chain-fatty-acid--CoA ligase) inhibitor;
ferroptosis inhibitor;
insulin-sensitizing drug
6,7-dichloroquinoxaline-2,3-dione
hexyltrimethylammoniumhexyltrimethylammonium: RN given refers to parent cpd
5-Chloro-1H-indole-2,3-dioneindolesanticoronaviral agent
5-iodoisatin5-iodoisatin: structure in first sourceindolesanticoronaviral agent
2,2-dimethoxy-2-phenylacetophenone
trimethyl(4-oxopentyl)ammoniumN,N,N-trimethyl-N-(4-oxopentyl)ammonium : A quaternary ammonium ion in which the substituents on nitrogen are methyl (three) and 4-oxopentyl.

trimethyl(4-oxopentyl)ammonium: RN given refers to parent cpd; acetylcholine antag
quaternary ammonium ion
1-phenazinecarboxylic acid1-phenazinecarboxylic acid: from Streptomyces cinnamonensis; RN given refers to parent cpd; structure given in first source

phenazine-1-carboxylic acid : An aromatic carboxylic acid that is phenazine substituted at C-1 with a carboxy group.
aromatic carboxylic acid;
monocarboxylic acid;
phenazines
antifungal agent;
antimicrobial agent;
bacterial metabolite
anisoin
hydrobenzoinhydrobenzoin: structure in first sourceethanediol
sym 2081
malabaricone cmalabaricone C: from maize (Myristica fragrans); structure given in first sourcebutanonemetabolite
rimonabant
propidium iodideorganic iodide salt
methoctraminemethoctramine : A tetramine that is N,N'-bis(6-aminohexyl)octane-1,8-diamine where the primary amino groups both carry 2-methoxybenzyl substituents.

methoctramine tetrahydrochloride : A hydrochloride obtained by combining methoctramine with four molar equivalents of hydrochloric acid.

methoctramine: structure given in first source
hydrochloridemuscarinic antagonist
dihydrokainatedicarboxylic acid
deguelindeguelin : A rotenone that is 13,13a-dihydro-3H-chromeno[3,4-b]pyrano[2,3-h]chromen-7(7aH)-one substituted by methoxy groups at positions 9 and 10, and by two methyl groups at position 3 (the 7aS,13aS-stereoisomer). It exists in abundant quantities in the bark, roots, and leaves of the Leguminosae family of plants and reported to exert anti-tumour effects in various cancers.

deguelin: a natural product from Mundulea sericea; RN refers to (7aS-cis)-isomer; structure given in first source
aromatic ether;
diether;
organic heteropentacyclic compound;
rotenones
angiogenesis inhibitor;
anti-inflammatory agent;
antineoplastic agent;
antiviral agent;
apoptosis inducer;
EC 2.7.11.1 (non-specific serine/threonine protein kinase) inhibitor;
mitochondrial NADH:ubiquinone reductase inhibitor;
plant metabolite
territrem bterritrem B: tremorgenic mycotoxin from Aspergillus terreus; RN given refers to (4aR-(4aalpha,6abeta,12aalpha,12bbeta))-isomer
tephrosintephrosin : A member of the class of rotenones that is 13,13a-dihydro-3H-chromeno[3,4-b]pyrano[2,3-h]chromen-7(7aH)-one substituted with geminal methyl groups at position 3, hydroxy group at position 7a and methoxy groups at positions 9 and 10 (the 7aR,13aR stereoisomer). It is isolated from the leaves and twigs of Antheroporum pierrei and exhibits antineoplastic and pesticidal activities.

tephrosin: RN given for (7aR-cis)-isomer; has insecticidal activity; structure in first source
aromatic ether;
cyclic ketone;
organic heteropentacyclic compound;
rotenones
antineoplastic agent;
metabolite;
pesticide
tanshinonetanshinone: from root of Salvia miltiorrhiza Bunge; RN given refers to tanshinone I; cardioprotective agent and neuroprotective agentabietane diterpenoidanticoronaviral agent
7-methoxytacrine
razadyneRazadyne: Name of the FDA approved preparation from J&J.
24-hydroxycholesterol(24S)-24-hydroxycholesterol : A 24-hydroxycholesterol that has S configuration at position 24. It is the major metabolic breakdown product of cholesterol in the brain.24-hydroxycholesterolbiomarker;
human blood serum metabolite;
mouse metabolite
profenamine hydrochlorideprofenamine hydrochloride : The monohydrochloride salt of profenamine. An antimuscarinic, it is used for the symptomatic treatment of Parkinson's disease.hydrochlorideadrenergic antagonist;
antiparkinson drug;
histamine antagonist;
muscarinic antagonist
1,3-indandione1,2-indanedione: use for detection of latent fingerprints on porous surfaces; structure in first source
glabraninglabranin : A dihydroxyflavanone that is pinocembrin substituted by a prenyl group at position 8.(2S)-flavan-4-one;
dihydroxyflavanone
plant metabolite
dihydrosanguinarinebenzophenanthridine alkaloidantifungal agent;
metabolite
ly 293558tezampanel: structure given in first source; an AMPA receptor antagonist
gamma-carbolinegamma-carboline: RN given refers to parent cpd; structure given in first sourcepyridoindole
quilostigminequilostigmine: RN given for (3aS,cis)-isomer; structure in first sourcepyrroloindole
besonprodilbesonprodil: CI-1041 is also known as PD19680; NMDA receptor antagonist for treatment of Parkinson's disease; structure in first source
barbigeronebarbigerone: an antioxidant; structure in first source
philanthotoxin 343philanthotoxin 343: structure given in first source (see article's footnote); identical to philanthotoxin 433 except that the number of methylene groups between the respective amine moieties is 3,4,3 instead of 4,3,3N-acyl-amino acid
miltironemiltirone: from Salvis miltiorrhiza Bunge; central benzodiazepine receptor ligand; structure given in first sourceabietane diterpenoid
cryptotanshinonecryptotanshinone: from Salvia miltiorrhizaabietane diterpenoidanticoronaviral agent
territrem cterritrem C: tremorgenic mycotoxin from Aspergillus terreus; MF C28-H32-O9; structure given in first source
ar-turmerone(+)-(S)-ar-turmerone : A sesquiterpenoid that is 2-methylhept-2-en-4-one substituted by a 4-methylphenyl group at position 6. It has been isolated from Peltophorum dasyrachis.

ar-turmerone: potent antivenom against snake bites; isolated form Curcuma longa; structure given in first source
enone;
sesquiterpenoid
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
plant metabolite
asimilobineasimilobine: from Nelumbro nucifera; RN given refers to (R)-isomeraporphine alkaloidmetabolite
malabaricone bmalabaricone B: from maize (Myristica fragrans); structure given in first source
tanshinone ii atashinone IIA: a cardiovascular agent with antineoplastic activity; isolated from Salvia miltiorrhiza; structure in first sourceabietane diterpenoid
serine o-sulfateL-serine O-sulfate : A non-proteinogenic L-alpha-amino acid that is the O-sulfo derivative of L-serine.

serine O-sulfate: RN given refers to (L)-isomer
L-serine derivative;
non-proteinogenic L-alpha-amino acid;
O-sulfoamino acid
chonemorphinechonemorphine: a steroidal alkaloid; antiparasitic agent from Chonemorpha fragrans
magnolinmagnolin: from flower buds of Magnolia biondii
dizocilpinesecondary amino compound;
tetracyclic antidepressant
anaesthetic;
anticonvulsant;
neuroprotective agent;
nicotinic antagonist;
NMDA receptor antagonist
memantine hydrochloridehydrochlorideantidepressant;
antiparkinson drug;
dopaminergic agent;
neuroprotective agent;
NMDA receptor antagonist
esketamineesketamine : The S- (more active) enantiomer of ketamine.ketamineanalgesic;
intravenous anaesthetic;
NMDA receptor antagonist
rs 67333RS 67333: 5-HT(4) receptor agonist; structure in first sourcearomatic ketone
aflatoxin b1aflatoxin B1 : An aflatoxin having a tetrahydrocyclopenta[c]furo[3',2':4,5]furo[2,3-h]chromene skeleton with oxygen functionality at positions 1, 4 and 11.

Aflatoxin B1: A potent hepatotoxic and hepatocarcinogenic mycotoxin produced by the Aspergillus flavus group of fungi. It is also mutagenic, teratogenic, and causes immunosuppression in animals. It is found as a contaminant in peanuts, cottonseed meal, corn, and other grains. The mycotoxin requires epoxidation to aflatoxin B1 2,3-oxide for activation. Microsomal monooxygenases biotransform the toxin to the less toxic metabolites aflatoxin M1 and Q1.
aflatoxin;
aromatic ether;
aromatic ketone
carcinogenic agent;
human metabolite
phenserinephenserine: a carbamate analog of physostigmine; a long-acting inhibitor of cholinesterase
cns 5161CNS 5161: structure in first source
latrepirdinelatrepirdine: structuremethylpyridines;
pyridoindole
geroprotector
zanapezilpiperidines
tv3326indanes
taspinetaspine: RN given refers to parent cpd; structure
cp 101,606traxoprodil mesylate: a selective NMDA antagonist; structure given in first source
ml 204ML 204: modulates both TRPC4 and TRPC5 channels; structure in first source
5-Fluoroisatinindolesanticoronaviral agent
berbaminebisbenzylisoquinoline alkaloid;
isoquinolines
papaverinolpapaverinol: degradation product of papaverine
N-butyl-1H-benzimidazol-2-aminebenzimidazoles
malabaricone amalabaricone A: from Myristica malabarica (rampatri), has antipromastigote activity; structure in first source
marmesinmarmesin: RN given refers to (S)-isomer; nodakenetin is the (R)-isomermarmesin
aromolinearomoline: from roots of Stephania cepharantha; structure given in first source
3-(1-dimethylaminoethyl)phenol3-(1-dimethylaminoethyl)phenol: a rivastigmine metabolite; structure in first source
naringenin(S)-naringenin : The (S)-enantiomer of naringenin.(2S)-flavan-4-one;
naringenin
expectorant;
plant metabolite
eriodictyoleriodictyol : A tetrahydroxyflavanone that is flavanone substituted by hydroxy groups at positions 5, 7, 3' and 4' respectively.

eriodictyol: structure
3'-hydroxyflavanones;
tetrahydroxyflavanone
obamegineobamegine: RN given refers to cpd without isomeric designationbisbenzylisoquinoline alkaloid;
isoquinolines
terconazole(2R,4S)-terconazole : A 1-(4-{[2-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy}phenyl)-4-isopropylpiperazine in which positions 2 and 4 of the 1,3-dioxolane moiety have R and S configuration, respectively.

terconazole : A racemate consisting of equimolar amounts of (2R,4S)- and (2S,4R)-terconazole. It has broad-spectrum antifungal activitiy and is used for the treatment of vaginal yeast infections (Candida).

terconazole: structure & RN for (cis)-isomer from first source
1-(4-{[2-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy}phenyl)-4-isopropylpiperazine
hemanthaminealkaloid
physoveninephysovenine: structure given in first sourceindoles
decursindecursin: activates protein kinase C; isolated from the root of Angelica gigas; RN given for (S)-isomer; structure in first sourcecoumarins
decursinoldecursinol : An organic heterotricyclic compound that is 7,8-dihydro-2H,6H-pyrano[3,2-g]chromen-2-one substituted by a beta-hydroxy group at position 7 and two methyl groups at position 8. It is isolated from the roots of Angelica gigas and has been found to possess significant inhibitory activity against acetylcholinesterase enzyme (EC 3.1.1.7).cyclic ether;
delta-lactone;
organic heterotricyclic compound;
secondary alcohol
analgesic;
antineoplastic agent;
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
metabolite
Girgensoninenitrile
hinokininhinokinin : A lignan that is dihydrofuran-2(3H)-one (gamma-butyrolactone) substituted by a 3,4-methylenedioxybenzyl group at positions 3 and 4 (the 3R,4R-diastereoisomer).

hinokinin: suppresses expression of both HBsAg and HBeAg
benzodioxoles;
gamma-lactone;
lignan
trypanocidal drug
3-deoxyvasicine3-deoxyvasicine: RN given refers to parent cpdquinazolines
yangambinlignan
3-hydroxyaspartic acid, (threo-l)-isomer(3S)-3-hydroxy-L-aspartic acid : The (3S)-diastereomer of 3-hydroxy-L-aspartic acid.3-hydroxy-L-aspartic acidmetabolite
1-O-Acetyllycorine1-acetyllycorine: has antiviral activity; structure in first sourcealkaloid
floxacillinobliquine: obliquine is the (3S,4aS,11S,10bS)-isomer; isolated from Cyrtanthus obliquus; structure in first source; do not confuse with obliquinisoquinolines
pseudolycorinepseudolycorine: alkaloid isolated from Narcissus tazetta var. chinensis Roem, N. papyraceus or Lycoris radiata Herb; structure in first sourcephenanthridines
sanguininesanguinine: from Amaryllidaceae; structure in first sourcebenzazepine
lycoraminelycoramine: structure in first sourcebenzazepine
e-z cinnamic acidcinnamic acid : A monocarboxylic acid that consists of acrylic acid bearing a phenyl substituent at the 3-position. It is found in Cinnamomum cassia.

trans-cinnamic acid : The E (trans) isomer of cinnamic acid
cinnamic acidplant metabolite
resveratroltrans-resveratrol : A resveratrol in which the double bond has E configuration.resveratrolantioxidant;
phytoalexin;
plant metabolite;
quorum sensing inhibitor;
radical scavenger
ferulic acidferulate : A monocarboxylic acid anion obtained by the deprotonation of the carboxy group of ferulic acid.ferulic acidsanti-inflammatory agent;
antioxidant;
apoptosis inhibitor;
cardioprotective agent;
MALDI matrix material;
plant metabolite
diethylstilbestroldiethylstilbestrol : An olefinic compound that is trans-hex-3-ene in which the hydrogens at positions 3 and 4 have been replaced by p-hydroxyphenyl groups.

Diethylstilbestrol: A synthetic nonsteroidal estrogen used in the treatment of menopausal and postmenopausal disorders. It was also used formerly as a growth promoter in animals. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), diethylstilbestrol has been listed as a known carcinogen. (Merck, 11th ed)
olefinic compound;
polyphenol
antifungal agent;
antineoplastic agent;
autophagy inducer;
calcium channel blocker;
carcinogenic agent;
EC 1.1.1.146 (11beta-hydroxysteroid dehydrogenase) inhibitor;
EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor;
endocrine disruptor;
xenoestrogen
ganoderiol fganoderiol F: a ganoderma triterpene from Ganoderma amboinense; structure in first sourcetriterpenoid
licoricidinlicoricidin : A member of the class of hydroxyisoflavans that is R-isoflavan with hydroxy groups at positions 7, 2' and 4', a methoxy group at position 5 and prenyl groups at positions 6 and 3'. Isolated from Glycyrrhiza uralensis, it exhibits antibacterial activity.

licoricidin: a lysoPAF acetyltransferase inhibitor isolated from licorice root; structure in first source
aromatic ether;
hydroxyisoflavans;
methoxyisoflavan
antibacterial agent;
plant metabolite
propolin cnymphaeol A : A tetrahydroxyflavanone that is (2S)-flavanone substituted by hydroxy group at positions 5, 7, 3' and 4' and a geranyl group at position 6. Isolated from Macaranga tanarius and propolis collected in Okinawa, it exhibits radical scavenging activity.

propolin C: a PAK1 inhibitor; from Taiwanese propolis; structure in first source
4'-hydroxyflavanones;
tetrahydroxyflavanone
metabolite;
radical scavenger
physostigmine salicylateazaheterocycle salicylate salt;
salicylates
caffeic acidtrans-caffeic acid : The trans-isomer of caffeic acid.caffeic acidgeroprotector;
mouse metabolite
3-(3,4-dimethoxyphenyl)propenoic acid3-(3,4-dimethoxyphenyl)propenoic acid: structure given in first source; RN given refers to parent cpd

3,4-dimethoxycinnamic acid : A methoxycinnamic acid that is trans-cinnamic acid substituted by methoxy groups at positions 3' and 4' respectively.
methoxycinnamic acid
huperzine aorganic heterotricyclic compound;
primary amino compound;
pyridone;
sesquiterpene alkaloid
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
neuroprotective agent;
nootropic agent;
plant metabolite
deltoindeltoin: from Saposhnikovia divaricata (Fang Feng in Chinese); structure in first sourcefuranocoumarin
curcumincurcumin : A beta-diketone that is methane in which two of the hydrogens are substituted by feruloyl groups. A natural dyestuff found in the root of Curcuma longa.

Curcumin: A yellow-orange dye obtained from tumeric, the powdered root of CURCUMA longa. It is used in the preparation of curcuma paper and the detection of boron. Curcumin appears to possess a spectrum of pharmacological properties, due primarily to its inhibitory effects on metabolic enzymes.
aromatic ether;
beta-diketone;
diarylheptanoid;
enone;
polyphenol
anti-inflammatory agent;
antifungal agent;
antineoplastic agent;
biological pigment;
contraceptive drug;
dye;
EC 1.1.1.205 (IMP dehydrogenase) inhibitor;
EC 1.1.1.21 (aldehyde reductase) inhibitor;
EC 1.1.1.25 (shikimate dehydrogenase) inhibitor;
EC 1.6.5.2 [NAD(P)H dehydrogenase (quinone)] inhibitor;
EC 1.8.1.9 (thioredoxin reductase) inhibitor;
EC 2.7.10.2 (non-specific protein-tyrosine kinase) inhibitor;
EC 3.5.1.98 (histone deacetylase) inhibitor;
flavouring agent;
food colouring;
geroprotector;
hepatoprotective agent;
immunomodulator;
iron chelator;
ligand;
lipoxygenase inhibitor;
metabolite;
neuroprotective agent;
nutraceutical;
radical scavenger
1-(3-chloro-4-methoxyphenyl)-3-[2-(4-methyl-1-piperidinyl)ethyl]thioureathioureas
1-(4-methoxybenzyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid1-(4-methoxybenzyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid: has been shown to exhibit unprecedented positive allosteric activity for ACh binding as well as inherent agonist activity at the M1 muscarinic receptor; structure in first source
capsaicinALGRX-4975: an injectable capsaicin (TRPV1 receptor agonist) formulation for longlasting pain relief

capsaicinoid : A family of aromatic fatty amides produced as secondary metabolites by chilli peppers.
capsaicinoidnon-narcotic analgesic;
TRPV1 agonist;
voltage-gated sodium channel blocker
1-[(3,4-dichlorophenyl)methyl]indole-2,3-dioneindoles
tacrine hydrochloride
jnj-5207852
Ganodermanontrioltriterpenoidmetabolite
dexoxadrol
7-chloro-thiokynurenate7-chlorothiokynurenic acid: glycine site antagonist of NMDA receptor
n,n'-4-xylylenebis(pyridinium)
azilect
rasagilineindanes;
secondary amine;
terminal acetylenic compound
EC 1.4.3.4 (monoamine oxidase) inhibitor;
neuroprotective agent
ungeremineorganic molecular entitymetabolite
2-amino-3-phenylmethoxybutanedioic acidaspartic acid derivative
5-Nitroisatinindolesanticoronaviral agent
tcn 201
quercetin7-hydroxyflavonol;
pentahydroxyflavone
antibacterial agent;
antineoplastic agent;
antioxidant;
Aurora kinase inhibitor;
chelator;
EC 1.10.99.2 [ribosyldihydronicotinamide dehydrogenase (quinone)] inhibitor;
geroprotector;
phytoestrogen;
plant metabolite;
protein kinase inhibitor;
radical scavenger
apigeninChamomile: Common name for several daisy-like plants (MATRICARIA; TRIPLEUROSPERMUM; ANTHEMIS; CHAMAEMELUM) native to Europe and Western Asia, now naturalized in the United States and Australia.trihydroxyflavoneantineoplastic agent;
metabolite
luteolin3'-hydroxyflavonoid;
tetrahydroxyflavone
angiogenesis inhibitor;
anti-inflammatory agent;
antineoplastic agent;
apoptosis inducer;
c-Jun N-terminal kinase inhibitor;
EC 2.3.1.85 (fatty acid synthase) inhibitor;
immunomodulator;
nephroprotective agent;
plant metabolite;
radical scavenger;
vascular endothelial growth factor receptor antagonist
scopoletinhydroxycoumarinplant growth regulator;
plant metabolite
rutinHydroxyethylrutoside: Monohydroxyethyl derivative of rutin. Peripheral circulation stimulant used in treatment of venous disorders.disaccharide derivative;
quercetin O-glucoside;
rutinoside;
tetrahydroxyflavone
antioxidant;
metabolite
kaempferol7-hydroxyflavonol;
flavonols;
tetrahydroxyflavone
antibacterial agent;
geroprotector;
human blood serum metabolite;
human urinary metabolite;
human xenobiotic metabolite;
plant metabolite
7-hydroxycoumarin7-oxycoumarin: derivatives have anti-oxidant properties

umbelliferone : A hydroxycoumarin that is coumarin substituted by a hydroxy group ay position 7.
hydroxycoumarinfluorescent probe;
food component;
plant metabolite
fisetin3'-hydroxyflavonoid;
7-hydroxyflavonol;
tetrahydroxyflavone
anti-inflammatory agent;
antioxidant;
EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor;
geroprotector;
metabolite;
plant metabolite
galangin5,7-dihydroxyflavonol: antimicrobial from the twigs of Populus nigra x Populus deltoides; structure in first source

galangin : A 7-hydroxyflavonol with additional hydroxy groups at positions 3 and 5 respectively; a growth inhibitor of breast tumor cells.
7-hydroxyflavonol;
trihydroxyflavone
antimicrobial agent;
EC 3.1.1.3 (triacylglycerol lipase) inhibitor;
plant metabolite
myricetin7-hydroxyflavonol;
hexahydroxyflavone
antineoplastic agent;
antioxidant;
cyclooxygenase 1 inhibitor;
food component;
geroprotector;
hypoglycemic agent;
plant metabolite
4'-hydroxychalcone4'-hydroxychalcone : A member of the class of chalcones that is trans-chalcone substituted by a hydroxy group at position 4'.

4'-hydroxychalcone: inhibits TNFalpha-induced NF-κB activation; structure in first source
chalcones;
phenols
anti-inflammatory agent;
antineoplastic agent
l 7458703-((4-(4-chlorophenyl)piperazin-1-yl)methyl)-1H-pyrrolo(2,3-b)pyridine: selective for D(4) receptors; structure in first sourcepiperazines
dl-threo-beta-benzyloxyaspartate
rosmarinic acidrosemarinic acid: a dimer of caffeic acid isolated from rosemary

rosmarinate : The conjugate base of rosmarinic acid; major species at pH 7.3.
carboxylic ester;
monocarboxylic acid;
phenylpropanoid;
polyphenol
antioxidant;
EC 1.1.1.21 (aldehyde reductase) inhibitor;
non-steroidal anti-inflammatory drug;
peripheral nervous system drug;
plant metabolite;
serine proteinase inhibitor
7-demethylsuberosin7-demethylsuberosin : A hydroxycoumarin that is 7-hydroxycoumarin which is substituted at position 6 by a 3-methylbut-2-en-1-yl group. A natural product found in Citropsis articulata.

7-demethylsuberosin: fucocoumarin derivative of Angelicae dahuricae
hydroxycoumarinplant metabolite
5,7-dihydroxy-4',6-dimethoxyflavone5,7-dihydroxy-4',6-dimethoxyflavone: from Cirsium japonicum D. C.

pectolinarigenin : A dimethoxyflavone that is the 6,4'-dimethyl ether derivative of scutellarein.
dihydroxyflavone;
dimethoxyflavone
plant metabolite
su 11248monocarboxylic acid amide;
pyrroles
angiogenesis inhibitor;
antineoplastic agent;
EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor;
immunomodulator;
neuroprotective agent;
vascular endothelial growth factor receptor antagonist
oxiconazoleoxiconazole : An oxime O-ether that is the 2,4-dichlorobenzyl ether of the oxime obtained by formal condensation of hydroxylamine with the carbonyl group of acetopnenone in which the phenyl group is substituted by chlorines at positions 2 and 4, and in which one of the hydrogens of the methyl group is replaced by a 1H-imidazol-1-yl group. An antifungal agent, it is used (generally as the nitrate salt) in creams and powders for the topical treatment of fungal skin infections.

oxiconazole: RN given refers to parent cpd(Z)-isomer; structure given in first source
conazole antifungal drug;
dichlorobenzene;
imidazole antifungal drug;
imidazoles;
oxime O-ether
antiinfective agent
levorphanolLevorphanol: A narcotic analgesic that may be habit-forming. It is nearly as effective orally as by injection.morphinane alkaloid
dextromethorphandextromethorphan : A 6-methoxy-11-methyl-1,3,4,9,10,10a-hexahydro-2H-10,4a-(epiminoethano)phenanthrene in which the sterocenters at positions 4a, 10 and 10a have S-configuration. It is a prodrug of dextrorphan and used as an antitussive drug for suppressing cough.

Dextromethorphan: Methyl analog of DEXTRORPHAN that shows high affinity binding to several regions of the brain, including the medullary cough center. This compound is an NMDA receptor antagonist (RECEPTORS, N-METHYL-D-ASPARTATE) and acts as a non-competitive channel blocker. It is one of the widely used ANTITUSSIVES, and is also used to study the involvement of glutamate receptors in neurotoxicity.
6-methoxy-11-methyl-1,3,4,9,10,10a-hexahydro-2H-10,4a-(epiminoethano)phenanthreneantitussive;
environmental contaminant;
neurotoxin;
NMDA receptor antagonist;
oneirogen;
prodrug;
xenobiotic
dextrorphanDextrorphan: Dextro form of levorphanol. It acts as a noncompetitive NMDA receptor antagonist, among other effects, and has been proposed as a neuroprotective agent. It is also a metabolite of DEXTROMETHORPHAN.morphinane alkaloid
huperzine bhuperzine B: Chinese drug isolated from Huperzia serrata; structure given in first source; also isolated from Phlegmariurus fordiiphenanthrol
licostinellicostinel: a glycine site NMDA receptor antagonist; structure given in first source
mimulonemimulone: structure in first source
4-hydroxylonchocarpin4-hydroxylonchocarpin: structure in first source
isonitrosoacetone2-oxopropanal-1-oxime: structure given in first source
diacetylmonoximediacetylmonoxime : A ketoxime obtained via formal condensation of butane-2,3-dione with hydroxylamine. It is a reversible myosin ATPase inhibitor.

diacetylmonoxime: used diagnostically for determining urea in blood; structure; myosin ATPase antagonist
ciproxifanaromatic ketone
ro 25-6981Ro 25-6981 : A member of the class of piperidines that is 4-benzylpiperidine substituted by a 3-hydroxy-3-(4-hydroxyphenyl)-2-methylpropyl group at position 1 (the 1R,2S-stereoisomer). It is a potent antagonist of the GluN2B subunit of the N-methyl-D-aspartate (NMDA) receptor.

Ro 25-6981: blocks NMDA receptors containg NR2B subunit; structure in first source
benzenes;
phenols;
piperidines;
secondary alcohol;
tertiary amino compound
anticonvulsant;
antidepressant;
neuroprotective agent;
NMDA receptor antagonist
eaa-090EAA-090: a potent N-methyl-D-aspartate antagonist; structure in first sourcedialkylarylamine;
tertiary amino compound
pd 174494PD 174494: structure in first sourcepiperidines
bis(7)-tacrinesecondary amino compoundapoptosis inhibitor;
EC 1.14.13.39 (nitric oxide synthase) inhibitor;
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
neuroprotective agent
cyclophostincyclophostin: from Streptomyces lavendulae; structure given in first source
fpl 15896ar
(4-benzylpiperidin-1-yl)-(6-hydroxy-1h-indol-2-yl)methanone(4-benzylpiperidin-1-yl)-(6-hydroxy-1H-indol-2-yl)methanone: an NR2B-subunit selective antagonist; structure in first source
phenethylcymserinephenethylcymserine: structure in first source
ganstigmineganstigmine: structure in first source
tqx 173
ap 2238
(1rs,1's)-peaqx
gw 9578GW 9578: a peroxisome proliferator-activated receptor alpha agonist; structure in first source
cymserinecymserine: butyrylcholinesterase inhibitor; structure in first source
memoquinmemoquin: structure in first source
tolserinetolserine: structure in first source
pf9601n
4-n-butyl-1-(4-(2-methylphenyl)-4-oxo-1-butyl)-piperidine hydrogen chloride
endophenazine aendophenazine A: a phenazine antibiotic from the arthropod; structure in first source
caproctaminecaproctamine: an M1 and M3 receptor antagonist; also inhibits acetylcholinesterase; structure in first source
huprine yhuprine Y: structure in first source
pazopanibpazopanib : A pyrimidine that is 5-(pyrimidin-2-yl}amino-2-methylbenzenesulfonamide substituted at position 4 by a (2,3-dimethylindazol-6-yl)(methyl)amino group. Used as its hydrochloride salt for treatment of kidney cancer.

pazopanib: a protein kinase inhibitor
aminopyrimidine;
indazoles;
sulfonamide
angiogenesis modulating agent;
antineoplastic agent;
tyrosine kinase inhibitor;
vascular endothelial growth factor receptor antagonist
hupc protein, bacteriahupC protein, Bacteria: from structural operon of Rhizobium leguminosarum bv. viciae; MW 27.9 kDa; has hydrogenase activity; amino acid sequence given in first source
arisugacinarisugacin A : An organic heterotetracyclic compound that is 4a,12a-dihydroxy-4,4,6a,12b-tetramethyl-4a,6,6a,12,12a,12b-hexahydro-4H,11H-benzo[f]pyrano[4,3-b]chromene-1,11(5H)-dione substituted by 3,4-dimethoxyphenyl group at position 9 (the 4aR,6aR,12aS,12bS steroisomer). Isolated from the culture broth of Penicillium, it acts as a selective inhibitor of acetylcholinesterase.

arisugacin: isolated from Penicillium sp. FO-4259; structure given in first source
aromatic ether;
delta-lactone;
enone;
organic heterotetracyclic compound;
tertiary alcohol
antimicrobial agent;
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
metabolite;
Penicillium metabolite
6-chlorotacrine6-chlorotacrine: structure given in first source
4-Methoxylonchocarpinchalcones
xanthostigminexanthostigmine: structure in first source
montaninemontanine: has anxiolytic, antidepressant, and anticonvulsant activities
lipocrinelipocrine: anti-Alzheimer's drug; structure in first source
Dihydrotanshinone Idihydrotanshinone I: extracted from Radix Salviaeabietane diterpenoidanticoronaviral agent
l-beta-threo-benzyl-aspartateL-beta-threo-benzyl-aspartate: structure in first source
ganodermadiolganodermadiol: isolated from Ganoderma lucidum; structure given in first source

ganoderol B : A tetracyclic triterpenoid that is lanosta-7,9(11),24-triene which is substituted by hydroxy groups at positions 3 and 27. It has been isolated from several Ganoderma species.
3beta-sterol;
primary allylic alcohol;
tetracyclic triterpenoid
antiviral agent;
fungal metabolite;
hepatoprotective agent
lucidenic acid alucidenic acid A: isolated from fruiting bodies of Ganoderma lucidum; structure in first sourcetriterpenoid
etoxadroletoxadrol: was heading 1975-94 (see under PIPERIDINES 1975-90); use PIPERIDINES to search ETOXADROL 1975-90; dissociative anesthetic with some cardiovascular effectsketal
6-methoxydihydrosanguinarine6-methoxydihydrosanguinarine: from Corydalis tashiroi (Fumariaceae); structure in first source
methoxydine1-(1-(4-methoxyphenyl)cyclohexyl)piperidine: a glutamate NMDA receptor ligand; structure in first source
lucidenic acid nlucidenic acid N : A tetracyclic triterpenoid that is 25,26,27-trinorlanost-8-en-24-oic acid substituted by hydroxy groups at positions 3 and 7 and oxo groups at positions 11 and 15 respectively (the 3beta,5alpha,7beta stereoisomer). Isolated from the fruiting bodies of Ganoderma lucidum, it exhibits cytotoxicity against tumour cells.

lucidenic acid N: from the dried fruiting bodies of Ganoderma lucidum (polyporaceae); structure in first source
cyclic terpene ketone;
dioxo monocarboxylic acid;
secondary alcohol;
tetracyclic triterpenoid
antineoplastic agent;
EC 3.1.1.8 (cholinesterase) inhibitor;
metabolite
tanshinone ii a sodium sulfonatetanshinone II A sodium sulfonate: has cardioprotective activity; water-soluble derivative of tanshinone II A; isolated from Salvia militiorrhiza; relieves anginal pain; structure
ucph 1012-amino-4-(4-methoxyphenyl)-7-(naphthalen-1-yl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile: structure in first source
nitd 609NITD 609: an antimalarial and coccidiostat; structure in first source
wms 1410
ass234
ganoderic acid yganoderic acid Y: has antiviral activity; isolated from Ganoderma lucidum; structure in first sourcetriterpenoid
donecopridedonecopride: a dual serotonin subtype 4 receptor agonist/acetylcholinesterase inhibitor with potential interest for Alzheimer's disease treatment; structure in first source
pralidoximepralidoxime : A pyridinium ion that is 1-methylpyridinium substituted by a (hydroxyimino)methyl group at position 2.

pralidoxime: RN given refers to parent cpd; chloride was minor descriptor (75-80); on-line & Index Medicus search PRALIDOXIME COMPOUNDS (66-80)
pyridinium ionantidote to organophosphate poisoning;
antidote to sarin poisoning;
cholinergic drug;
cholinesterase reactivator
pyridine-2-aldoximepyridine-2-aldoxime: RN given refers to parent cpd
2-hydroxyphenazinephenazines
asoxime chloride
pralidoxime chlorideorganic chloride salt;
pyridinium salt
cholinergic drug;
cholinesterase reactivator
discorhabdin ldiscorhabdin L: cytotoxic alkaloid from the sponge Latrunculia brevis; structure in first source
trimedoxime bromideTrimedoxime: Cholinesterase reactivator used as an antidote in alkyl phosphate poisoning.
obidoxime chloride