| Substance | Relationship Strength | Studies | Trials | Classes | Roles |
|---|
2,3-diphosphoglycerate
2,3-Diphosphoglycerate: A highly anionic organic phosphate which is present in human red blood cells at about the same molar ratio as hemoglobin. It binds to deoxyhemoglobin but not the oxygenated form, therefore diminishing the oxygen affinity of hemoglobin. This is essential in enabling hemoglobin to unload oxygen in tissue capillaries. It is also an intermediate in the conversion of 3-phosphoglycerate to 2-phosphoglycerate by phosphoglycerate mutase (EC 5.4.2.1). (From Stryer Biochemistry, 4th ed, p160; Enzyme Nomenclature, 1992, p508). 2,3-bisphosphoglyceric acid : A bisphosphoglyceric acid that is glyceric acid carrying two phospho substituents at positions 2 and 3. | 4.04 | 3 | 1 | bisphosphoglyceric acid;
tetronic acid derivative | human metabolite |
methane
Methane: The simplest saturated hydrocarbon. It is a colorless, flammable gas, slightly soluble in water. It is one of the chief constituents of natural gas and is formed in the decomposition of organic matter. (Grant & Hackh's Chemical Dictionary, 5th ed). methane : A one-carbon compound in which the carbon is attached by single bonds to four hydrogen atoms. It is a colourless, odourless, non-toxic but flammable gas (b.p. -161degreeC). | 2.06 | 1 | 0 | alkane;
gas molecular entity;
mononuclear parent hydride;
one-carbon compound | bacterial metabolite;
fossil fuel;
greenhouse gas |
lactic acid
Lactic Acid: A normal intermediate in the fermentation (oxidation, metabolism) of sugar. The concentrated form is used internally to prevent gastrointestinal fermentation. (From Stedman, 26th ed). 2-hydroxypropanoic acid : A 2-hydroxy monocarboxylic acid that is propanoic acid in which one of the alpha-hydrogens is replaced by a hydroxy group. | 2.36 | 2 | 0 | 2-hydroxy monocarboxylic acid | algal metabolite;
Daphnia magna metabolite |
nickel
Nickel: A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.. nickel ion : A nickel atom having a net electric charge.. nickel atom : Chemical element (nickel group element atom) with atomic number 28. | 2.31 | 1 | 0 | metal allergen;
nickel group element atom | epitope;
micronutrient |
pyruvic acid
Pyruvic Acid: An intermediate compound in the metabolism of carbohydrates, proteins, and fats. In thiamine deficiency, its oxidation is retarded and it accumulates in the tissues, especially in nervous structures. (From Stedman, 26th ed). pyruvic acid : A 2-oxo monocarboxylic acid that is the 2-keto derivative of propionic acid. It is a metabolite obtained during glycolysis. | 2.36 | 2 | 0 | 2-oxo monocarboxylic acid | cofactor;
fundamental metabolite |
theophylline
[no description available] | 1.95 | 1 | 0 | dimethylxanthine | adenosine receptor antagonist;
anti-asthmatic drug;
anti-inflammatory agent;
bronchodilator agent;
drug metabolite;
EC 3.1.4.* (phosphoric diester hydrolase) inhibitor;
fungal metabolite;
human blood serum metabolite;
immunomodulator;
muscle relaxant;
vasodilator agent |
papaverine
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.. papaverine : 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. | 2.36 | 2 | 0 | benzylisoquinoline alkaloid;
dimethoxybenzene;
isoquinolines | antispasmodic drug;
vasodilator agent |
phenobarbital
Phenobarbital: A barbituric acid derivative that acts as a nonselective central nervous system depressant. It potentiates GAMMA-AMINOBUTYRIC ACID action on GABA-A RECEPTORS, and modulates chloride currents through receptor channels. It also inhibits glutamate induced depolarizations.. phenobarbital : A member of the class of barbiturates, the structure of which is that of barbituric acid substituted at C-5 by ethyl and phenyl groups. | 2.36 | 2 | 0 | barbiturates | anticonvulsant;
drug allergen;
excitatory amino acid antagonist;
sedative |
piracetam
Piracetam: A compound suggested to be both a nootropic and a neuroprotective agent. | 1.97 | 1 | 0 | organonitrogen compound;
organooxygen compound | |
pentylenetetrazole
Pentylenetetrazole: A pharmaceutical agent that displays activity as a central nervous system and respiratory stimulant. It is considered a non-competitive GAMMA-AMINOBUTYRIC ACID antagonist. Pentylenetetrazole has been used experimentally to study seizure phenomenon and to identify pharmaceuticals that may control seizure susceptibility.. pentetrazol : An organic heterobicyclic compound that is 1H-tetrazole in which the hydrogens at positions 1 and 5 are replaced by a pentane-1,5-diyl group. A central and respiratory stimulant, it was formerly used for the treatment of cough and other respiratory tract disorders, cardiovascular disorders including hypotension, and pruritis. | 1.97 | 1 | 0 | organic heterobicyclic compound;
organonitrogen heterocyclic compound | |
physostigmine
Physostigmine: 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. | 1.97 | 1 | 0 | carbamate ester;
indole alkaloid | antidote to curare poisoning;
EC 3.1.1.8 (cholinesterase) inhibitor;
miotic |
trifluoroacetic acid
Trifluoroacetic Acid: A very strong halogenated derivative of acetic acid. It is used in acid catalyzed reactions, especially those where an ester is cleaved in peptide synthesis.. trifluoroacetic acid : A monocarboxylic acid that is the trifluoro derivative of acetic acid. | 2.06 | 1 | 0 | fluoroalkanoic acid | human xenobiotic metabolite;
NMR chemical shift reference compound;
reagent |
4-butyrolactone
4-Butyrolactone: One of the FURANS with a carbonyl thereby forming a cyclic lactone. It is an endogenous compound made from gamma-aminobutyrate and is the precursor of gamma-hydroxybutyrate. It is also used as a pharmacological agent and solvent.. tetrahydrofuranone : Any oxolane having an oxo- substituent at any position on the tetrahydrofuran ring.. gamma-butyrolactone : A butan-4-olide that is tetrahydrofuran substituted by an oxo group at position 2. | 2 | 1 | 0 | butan-4-olide | metabolite;
neurotoxin |
potassium cyanide
[no description available] | 1.98 | 1 | 0 | cyanide salt;
one-carbon compound;
potassium salt | EC 1.15.1.1 (superoxide dismutase) inhibitor;
EC 1.9.3.1 (cytochrome c oxidase) inhibitor;
neurotoxin |
catechin
Catechin: An antioxidant flavonoid, occurring especially in woody plants as both (+)-catechin and (-)-epicatechin (cis) forms.. catechin : Members of the class of hydroxyflavan that have a flavan-3-ol skeleton and its substituted derivatives.. rac-catechin : A racemate comprising equimolar amounts of (+)- and (-)-catechin. (+)-catechin : The (+)-enantiomer of catechin and a polyphenolic antioxidant plant metabolite. | 1.97 | 1 | 0 | catechin | antioxidant;
plant metabolite |
cytidine diphosphate choline
Cytidine Diphosphate Choline: Donor of choline in biosynthesis of choline-containing phosphoglycerides. | 1.95 | 1 | 0 | nucleotide-(amino alcohol)s;
phosphocholines | human metabolite;
mouse metabolite;
neuroprotective agent;
psychotropic drug;
Saccharomyces cerevisiae metabolite |
vincamine
Vincamine: A major alkaloid of Vinca minor L., Apocynaceae. It has been used therapeutically as a vasodilator and antihypertensive agent, particularly in cerebrovascular disorders. | 4.59 | 8 | 0 | alkaloid ester;
hemiaminal;
methyl ester;
organic heteropentacyclic compound;
vinca alkaloid | antihypertensive agent;
metabolite;
vasodilator agent |
trimetazidine
Trimetazidine: A vasodilator used in angina of effort or ischemic heart disease. | 1.95 | 1 | 0 | aromatic amine | |
nicergoline
Nicergoline: An ergot derivative that has been used as a cerebral vasodilator and in peripheral vascular disease. It may ameliorate cognitive deficits in CEREBROVASCULAR DISORDERS. | 2.66 | 3 | 0 | organic heterotetracyclic compound;
organonitrogen heterocyclic compound | |
exifone
[no description available] | 1.97 | 1 | 0 | benzophenones | |
vinconate
vinconate: synthetic hexa-hydrocanthane alkaloid; RN given refers to (+ -)-isomer; RN for cpd without isomeric designation not avai lable 8/89 | 1.97 | 1 | 0 | | |
n-methylscopolamine
N-Methylscopolamine: A muscarinic antagonist used to study binding characteristics of muscarinic cholinergic receptors. | 2.41 | 2 | 0 | | |
carbene
carbene: electrically neutral species H2C: and its derivatives, in which the carbon is covalently bonded to two univalent groups of any kind or a divalent group and bears two nonbonding electrons; carbene is the name of the parent hydride :CH2 ; hence, the name dichlorocarbene for :CCl2. However, names for acyclic and cyclic hydrocarbons containing one or more divalent carbon atoms are derived from the name of the corresponding all-4-hydrocarbon using the suffix -ylidene; methylene carbene also available. carbene : The electrically neutral species H2C(2.) and its derivatives, in which the carbon is covalently bonded to two univalent groups of any kind or a divalent group and bears two nonbonding electrons, which may be spin-paired (singlet state) or spin-non-paired (triplet state). | 2.06 | 1 | 0 | carbene;
methanediyl | |
2-(nitrooxy)ethyl apovincaminate
2-(nitrooxy)ethyl apovincaminate: structure given in first source | 3.12 | 1 | 0 | | |
strychnine
Strychnine: An alkaloid found in the seeds of STRYCHNOS NUX-VOMICA. It is a competitive antagonist at glycine receptors and thus a convulsant. It has been used as an analeptic, in the treatment of nonketotic hyperglycinemia and sleep apnea, and as a rat poison.. strychnine : A monoterpenoid indole alkaloid that is strychnidine bearing a keto substituent at the 10-position. | 1.99 | 1 | 0 | monoterpenoid indole alkaloid;
organic heteroheptacyclic compound | avicide;
cholinergic antagonist;
glycine receptor antagonist;
neurotransmitter agent;
rodenticide |
vinpocetine
vinpocetine: whole issue of Arzneim Forsch (23 articles) discuss this drug; Arzneim Forsch 26(10a);1976; RN given refers to parent cpd with unspecified isomeric designation | 8.8 | 3 | 0 | alkaloid | geroprotector |
betadex
beta-Cyclodextrins: Cyclic GLUCANS consisting of seven (7) glucopyranose units linked by 1,4-glycosidic bonds. | 1.97 | 1 | 0 | cyclodextrin | |
thapsigargin
Thapsigargin: A sesquiterpene lactone found in roots of THAPSIA. It inhibits SARCOPLASMIC RETICULUM CALCIUM-TRANSPORTING ATPASES.. thapsigargin : An organic heterotricyclic compound that is a hexa-oxygenated 6,7-guaianolide isolated fron the roots of Thapsia garganica L., Apiaceae. A potent skin irritant, it is used in traditional medicine as a counter-irritant. Thapsigargin inhibits Ca(2+)-transporting ATPase mediated uptake of calcium ions into sarcoplasmic reticulum and is used in experimentation examining the impacts of increasing cytosolic calcium concentrations. | 2.05 | 1 | 0 | butyrate ester;
organic heterotricyclic compound;
sesquiterpene lactone | calcium channel blocker;
EC 3.6.3.8 (Ca(2+)-transporting ATPase) inhibitor |
physostigmine salicylate
[no description available] | 1.97 | 1 | 0 | azaheterocycle salicylate salt;
salicylates | |
sirolimus
Sirolimus: A macrolide compound obtained from Streptomyces hygroscopicus that acts by selectively blocking the transcriptional activation of cytokines thereby inhibiting cytokine production. It is bioactive only when bound to IMMUNOPHILINS. Sirolimus is a potent immunosuppressant and possesses both antifungal and antineoplastic properties.. sirolimus : A macrolide lactam isolated from Streptomyces hygroscopicus consisting of a 29-membered ring containing 4 trans double bonds, three of which are conjugated. It is an antibiotic, immunosupressive and antineoplastic agent. | 2.05 | 1 | 0 | antibiotic antifungal drug;
cyclic acetal;
cyclic ketone;
ether;
macrolide lactam;
organic heterotricyclic compound;
secondary alcohol | antibacterial drug;
anticoronaviral agent;
antineoplastic agent;
bacterial metabolite;
geroprotector;
immunosuppressive agent;
mTOR inhibitor |
gamma-cyclodextrin
gamma-cyclodextrin : A cycloamylose composed of eight alpha-(1->4) linked D-glucopyranose units. | 1.97 | 1 | 0 | cyclodextrin | |
sclareolide
sclareolide: has antineoplastic activity; synthesized by oxidation of sclareol; a minor constituent of Arnica angustifolia and Sideritis nutans; structure in first source | 7.06 | 1 | 0 | | |
dihydroergotoxine
Dihydroergotoxine: A mixture of three different hydrogenated derivatives of ERGOTAMINE: DIHYDROERGOCORNINE; DIHYDROERGOCRISTINE; and DIHYDROERGOCRYPTINE. Dihydroergotoxine has been proposed to be a neuroprotective agent and a nootropic agent. The mechanism of its therapeutic actions is not clear, but it can act as an alpha-adrenergic antagonist and a dopamine agonist. The methanesulfonate salts of this mixture of alkaloids are called ERGOLOID MESYLATES. | 2.65 | 3 | 0 | | |
suloctidil
Suloctidil: A peripheral vasodilator that was formerly used in the management of peripheral and cerebral vascular disorders. It is hepatotoxic and fatalities have occurred. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1312) | 1.95 | 1 | 0 | | |
ergoline
Ergolines: A series of structurally-related alkaloids that contain the ergoline backbone structure.. ergoline : An indole alkaloid whose structural skeleton is found in many naturally occurring and synthetic ergolines which are known to bind to neurotransmitter receptors, such as dopamine, noradrenaline and serotonin receptors and function as unselective agonists or antagonists at these receptors. | 1.96 | 1 | 0 | diamine;
ergoline alkaloid;
indole alkaloid fundamental parent;
indole alkaloid;
organic heterotetracyclic compound | |
phosphocreatine
Phosphocreatine: An endogenous substance found mainly in skeletal muscle of vertebrates. It has been tried in the treatment of cardiac disorders and has been added to cardioplegic solutions. (Reynolds JEF(Ed): Martindale: The Extra Pharmacopoeia (electronic version). Micromedex, Inc, Englewood, CO, 1996). phosphagen : Any of a group of guanidine or amidine phosphates that function as storage depots for high-energy phosphate in muscle with the purpose of regenerating ATP from ADP during muscular contraction.. N-phosphocreatine : A phosphoamino acid consisting of creatine having a phospho group attached at the primary nitrogen of the guanidino group. | 2.36 | 2 | 0 | phosphagen;
phosphoamino acid | human metabolite;
mouse metabolite |
vindeburnol
vindeburnol: eburnamine derivative; RN given refers to (3alpha,14beta)-(+) isomer; structure given in first source | 3.49 | 2 | 0 | | |
scopolamine hydrobromide
[no description available] | 2.37 | 2 | 0 | | |
vindoline
[no description available] | 2.11 | 1 | 0 | | |
madindoline a
madindoline A: inhibits interleukin-6; isolated from Streptomyces; structure in first source | 2.31 | 1 | 0 | | |