| Substance | Relationship Strength | Studies | Trials | Classes | Roles |
|---|
alpha-ketoglutaric acid
2-oxoglutaric acid : An oxo dicarboxylic acid that consists of glutaric acid bearing an oxo substituent at position 2. It is an intermediate metabolite in Krebs cycle. | 2.08 | 1 | 0 | oxo dicarboxylic acid | fundamental metabolite |
beta-alanine
[no description available] | 2.08 | 1 | 0 | amino acid zwitterion;
beta-amino acid | agonist;
fundamental metabolite;
human metabolite;
inhibitor;
neurotransmitter |
succinic acid
Succinic Acid: A water-soluble, colorless crystal with an acid taste that is used as a chemical intermediate, in medicine, the manufacture of lacquers, and to make perfume esters. It is also used in foods as a sequestrant, buffer, and a neutralizing agent. (Hawley's Condensed Chemical Dictionary, 12th ed, p1099; McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1851). succinic acid : An alpha,omega-dicarboxylic acid resulting from the formal oxidation of each of the terminal methyl groups of butane to the corresponding carboxy group. It is an intermediate metabolite in the citric acid cycle. | 2.08 | 1 | 0 | alpha,omega-dicarboxylic acid;
C4-dicarboxylic acid | anti-ulcer drug;
fundamental metabolite;
micronutrient;
nutraceutical;
radiation protective agent |
decanoic acid
decanoate : A fatty acid anion 10:0 that is the conjugate base of decanoic acid.. decanoic acid : A C10, straight-chain saturated fatty acid. | 2.08 | 1 | 0 | medium-chain fatty acid;
straight-chain saturated fatty acid | algal metabolite;
anti-inflammatory agent;
antibacterial agent;
human metabolite;
plant metabolite;
volatile oil component |
kynurenic acid
Kynurenic Acid: A broad-spectrum excitatory amino acid antagonist used as a research tool.. kynurenic acid : A quinolinemonocarboxylic acid that is quinoline-2-carboxylic acid substituted by a hydroxy group at C-4. | 2.08 | 1 | 0 | monohydroxyquinoline;
quinolinemonocarboxylic acid | G-protein-coupled receptor agonist;
human metabolite;
neuroprotective agent;
nicotinic antagonist;
NMDA receptor antagonist;
Saccharomyces cerevisiae metabolite |
methadone
Methadone: A synthetic opioid that is used as the hydrochloride. It is an opioid analgesic that is primarily a mu-opioid agonist. It has actions and uses similar to those of MORPHINE. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1082-3). methadone : A racemate comprising equimolar amounts of dextromethadone and levomethadone. It is a opioid analgesic which is used as a painkiller and as a substitute for heroin in the treatment of heroin addiction.. 6-(dimethylamino)-4,4-diphenylheptan-3-one : A ketone that is heptan-3-one substituted by a dimethylamino group at position 6 and two phenyl groups at position 4. | 2.15 | 1 | 0 | benzenes;
diarylmethane;
ketone;
tertiary amino compound | |
dextropropoxyphene
Dextropropoxyphene: A narcotic analgesic structurally related to METHADONE. Only the dextro-isomer has an analgesic effect; the levo-isomer appears to exert an antitussive effect.. propoxyphene : A racemate of the (1R,2R)- and (1S,2R)- diastereoisomers.. dextropropoxyphene : The (1S,2R)-(+)-diastereoisomer of propoxyphene. | 2.15 | 1 | 0 | 1-benzyl-3-(dimethylamino)-2-methyl-1-phenylpropyl propanoate | mu-opioid receptor agonist;
opioid analgesic |
substance p
[no description available] | 2.15 | 1 | 0 | peptide | neurokinin-1 receptor agonist;
neurotransmitter;
vasodilator agent |
l-lactic acid
(S)-lactic acid : An optically active form of lactic acid having (S)-configuration. | 2.08 | 1 | 0 | (2S)-2-hydroxy monocarboxylic acid;
2-hydroxypropanoic acid | Escherichia coli metabolite;
human metabolite |
arginylphenylalaninamide
arginylphenylalaninamide: RN given refers to (L,L)-isomer; fragment of FMRamide; may be used as a neurotransmitter or neuromodulator by optic lobe neurons of different types | 2.1 | 1 | 0 | | |
metazocine
metazocine: more than 13 isomers available; structure given in first source | 2.15 | 1 | 0 | benzazocine | |
n-oleoylethanolamine
oleoyl ethanolamide : An N-(long-chain-acyl)ethanolamine that is the ethanolamide of oleic acid. The monounsaturated analogue of the endocannabinoid anandamide.. N-oleoylethanolamine: ceramidase inhibitor | 2.08 | 1 | 0 | endocannabinoid;
N-(long-chain-acyl)ethanolamine;
N-acylethanolamine 18:1 | EC 3.5.1.23 (ceramidase) inhibitor;
geroprotector;
PPARalpha agonist |
codeine
[no description available] | 2.15 | 1 | 0 | morphinane alkaloid;
organic heteropentacyclic compound | antitussive;
drug allergen;
environmental contaminant;
opioid analgesic;
opioid receptor agonist;
prodrug;
xenobiotic |
hydrocodone
hydrocodone : A morphinane-like compound that is a semi-synthetic opioid synthesized from codeine.. Hydrocodone: Narcotic analgesic related to CODEINE, but more potent and more addicting by weight. It is used also as cough suppressant. | 2.15 | 1 | 0 | morphinane-like compound;
organic heteropentacyclic compound | antitussive;
mu-opioid receptor agonist;
opioid analgesic |
morphine
Meconium: The thick green-to-black mucilaginous material found in the intestines of a full-term fetus. It consists of secretions of the INTESTINAL GLANDS; BILE PIGMENTS; FATTY ACIDS; AMNIOTIC FLUID; and intrauterine debris. It constitutes the first stools passed by a newborn. | 2.15 | 1 | 0 | morphinane alkaloid;
organic heteropentacyclic compound;
tertiary amino compound | anaesthetic;
drug allergen;
environmental contaminant;
geroprotector;
mu-opioid receptor agonist;
opioid analgesic;
plant metabolite;
vasodilator agent;
xenobiotic |
alpha-neoendorphin
alpha-neoendorphin: precursor or leucine enkephalin family | 2.15 | 1 | 0 | | |
thebaine
Thebaine: A drug that is derived from opium, which contains from 0.3-1.5% thebaine depending on its origin. It produces strychnine-like convulsions rather than narcosis. It may be habit-forming and is a controlled substance (opiate) listed in the U.S. Code of Federal Regulations, Title 21 Part 1308.12 (1985). (From Merck Index, 11th ed) | 2.15 | 1 | 0 | morphinane alkaloid;
organic heteropentacyclic compound | |
levorphanol
Levorphanol: A narcotic analgesic that may be habit-forming. It is nearly as effective orally as by injection. | 2.15 | 1 | 0 | morphinane alkaloid | |
morphine-6-glucuronide
morphine-6-glucuronide: RN given refers to (5alpha,6alpha)-isomer | 2.15 | 1 | 0 | morphinane alkaloid | |
sinomenine
sinomenine: isolated from root of Sinomenium acutum; antirheumatic, antineuralgic | 2.15 | 1 | 0 | morphinane alkaloid | |
6-o-monoacetylmorphine
6-O-monoacetylmorphine: RN given refers to parent cpd(5alpha,6alpha)-isomer | 2.15 | 1 | 0 | morphinane alkaloid | |
morphine-3-glucuronide
morphine-3-glucuronide: RN given refers to (5alpha,6alpha)-isomer | 2.15 | 1 | 0 | morphinane alkaloid | |
acetylcodeine
[no description available] | 2.15 | 1 | 0 | | |
codeine-6-glucuronide
codeine-6-glucuronide: structure given in first source | 2.15 | 1 | 0 | morphinane alkaloid | |
lysophosphatidic acid
[no description available] | 2.08 | 1 | 0 | | |
norcodeine
norcodeine : A morphinane-like compound that is the N-demethylated derivative of codeine.. norcodeine: RN given refers to (5 alpha,6 alpha)-isomer | 2.15 | 1 | 0 | morphinane alkaloid | |
tan 67
[no description available] | 2.52 | 2 | 0 | quinolines | |
adl 5859
[no description available] | 2.15 | 1 | 0 | | |
dynorphins
Dynorphins: A class of opioid peptides including dynorphin A, dynorphin B, and smaller fragments of these peptides. Dynorphins prefer kappa-opioid receptors (RECEPTORS, OPIOID, KAPPA) and have been shown to play a role as central nervous system transmitters. | 2.15 | 1 | 0 | | |
cortistatin 14
cortistatin: a cortical neuropeptide; shows strong structural similarity to somatostatin; a neuronal depressant; has sleep-modulating activity; amino acid sequence given in first source | 2.15 | 1 | 0 | | |
prosomatostatin
[no description available] | 2.08 | 1 | 0 | heterodetic cyclic peptide;
peptide hormone | fungal metabolite;
mouse metabolite;
rat metabolite |
dynorphins
dynorphin (1-13): potent opioid peptide; see also record for dynorphin & D-Ala(2)-dynorphin (1-11) | 2.15 | 1 | 0 | | |
RF9
[no description available] | 2.1 | 1 | 0 | dipeptide | kisspeptin receptor agonist;
neuropeptide FF receptor agonist;
neuropeptide FF receptor antagonist |
lysophosphatidylinositol
[no description available] | 2.08 | 1 | 0 | | |
formaldehyde
paraform: polymerized formaldehyde; RN given refers to parent cpd; used in root canal therapy | 2.02 | 1 | 0 | aldehyde;
one-carbon compound | allergen;
carcinogenic agent;
disinfectant;
EC 3.5.1.4 (amidase) inhibitor;
environmental contaminant;
Escherichia coli metabolite;
mouse metabolite;
Saccharomyces cerevisiae metabolite |
ro 31-8220
Ro 31-8220: a protein kinase C inhibitor | 2.03 | 1 | 0 | imidothiocarbamic ester;
indoles;
maleimides | EC 2.7.11.13 (protein kinase C) inhibitor |
colchicine
(S)-colchicine : A colchicine that has (S)-configuration. It is a secondary metabolite, has anti-inflammatory properties and is used to treat gout, crystal-induced joint inflammation, familial Mediterranean fever, and many other conditions. | 1.96 | 1 | 0 | alkaloid;
colchicine | anti-inflammatory agent;
gout suppressant;
mutagen |
substance p
[no description available] | 1.97 | 1 | 0 | peptide | neurokinin-1 receptor agonist;
neurotransmitter;
vasodilator agent |
enkephalin, methionine
Enkephalin, Methionine: One of the endogenous pentapeptides with morphine-like activity. It differs from LEU-ENKEPHALIN by the amino acid METHIONINE in position 5. Its first four amino acid sequence is identical to the tetrapeptide sequence at the N-terminal of BETA-ENDORPHIN. | 4.87 | 35 | 0 | | |
alpha,beta-methyleneadenosine 5'-triphosphate
alpha,beta-methyleneadenosine 5'-triphosphate: do not confuse with beta,gamma-methylene ATP; RN given refers to parent cpd | 2.03 | 1 | 0 | nucleoside triphosphate analogue | |
enkephalin-met, arg(6)-phe(7)-
[no description available] | 2.88 | 4 | 0 | organic molecular entity | |
enkephalin-met, arg(6)-gly(7)-leu(8)-
enkephalin-Met, Arg(6)-Gly(7)-Leu(8)-: from bovine adrenal medulla; has 35% the opiate receptor binding activity of Met-enkephalin | 3.06 | 5 | 0 | | |
bradykinin
[no description available] | 1.96 | 1 | 0 | oligopeptide | human blood serum metabolite;
vasodilator agent |
h 89
N-[2-(4-bromocinnamylamino)ethyl]isoquinoline-5-sulfonamide : A member of the class of isoquinolines that is the sulfonamide obtained by formal condensation of the sulfo group of isoquinoline-5-sulfonic acid with the primary amino group of N(1)-[3-(4-bromophenyl)prop-2-en-1-yl]ethane-1,2-diamine. It is a protein kinase A inhibitor.. N-(2-(4-bromocinnamylamino)ethyl)-5-isoquinolinesulfonamide: structure given in first source. (E)-N-[2-(4-bromocinnamylamino)ethyl]isoquinoline-5-sulfonamide : A N-[2-(4-bromocinnamylamino)ethyl]isoquinoline-5-sulfonamide in which the double bond adopts a trans-configuration. | 2.03 | 1 | 0 | N-[2-(4-bromocinnamylamino)ethyl]isoquinoline-5-sulfonamide | |
enkephalin, leucine
Enkephalin, Leucine: One of the endogenous pentapeptides with morphine-like activity. It differs from MET-ENKEPHALIN in the LEUCINE at position 5. Its first four amino acid sequence is identical to the tetrapeptide sequence at the N-terminal of BETA-ENDORPHIN.. Leu-enkephalin : A pentapeptide comprising L-tyrosine, glycine, glycine, L-phenylalanine and L-leucine residues joined in sequence by peptide linkages. It is an endogenous opioid peptide produced in vertebrate species, including rodents, primates and humans that results from decomposition of proenkephalin or dynorphin and exhibits antinociceptive properties. | 4.45 | 23 | 0 | pentapeptide;
peptide zwitterion | analgesic;
delta-opioid receptor agonist;
human metabolite;
mu-opioid receptor agonist;
neurotransmitter;
rat metabolite |
capsaicin
capsaicinoid : A family of aromatic fatty amides produced as secondary metabolites by chilli peppers.. ALGRX-4975: an injectable capsaicin (TRPV1 receptor agonist) formulation for longlasting pain relief | 2.03 | 1 | 0 | capsaicinoid | non-narcotic analgesic;
TRPV1 agonist;
voltage-gated sodium channel blocker |
naloxone
Naloxone: A specific opiate antagonist that has no agonist activity. It is a competitive antagonist at mu, delta, and kappa opioid receptors.. naloxone : A synthetic morphinane alkaloid that is morphinone in which the enone double bond has been reduced to a single bond, the hydrogen at position 14 has been replaced by a hydroxy group, and the methyl group attached to the nitrogen has been replaced by an allyl group. A specific opioid antagonist, it is used (commonly as its hydrochloride salt) to reverse the effects of opioids, both following their use of opioids during surgery and in cases of known or suspected opioid overdose. | 2.39 | 2 | 0 | morphinane alkaloid;
organic heteropentacyclic compound;
tertiary alcohol | antidote to opioid poisoning;
central nervous system depressant;
mu-opioid receptor antagonist |
morphine
Meconium: The thick green-to-black mucilaginous material found in the intestines of a full-term fetus. It consists of secretions of the INTESTINAL GLANDS; BILE PIGMENTS; FATTY ACIDS; AMNIOTIC FLUID; and intrauterine debris. It constitutes the first stools passed by a newborn. | 3.29 | 6 | 0 | morphinane alkaloid;
organic heteropentacyclic compound;
tertiary amino compound | anaesthetic;
drug allergen;
environmental contaminant;
geroprotector;
mu-opioid receptor agonist;
opioid analgesic;
plant metabolite;
vasodilator agent;
xenobiotic |
neurokinin a
Neurokinin A: A mammalian neuropeptide of 10 amino acids that belongs to the tachykinin family. It is similar in structure and action to SUBSTANCE P and NEUROKININ B with the ability to excite neurons, dilate blood vessels, and contract smooth muscles, such as those in the BRONCHI. | 1.97 | 1 | 0 | | |
naltrexone
Naltrexone: Derivative of noroxymorphone that is the N-cyclopropylmethyl congener of NALOXONE. It is a narcotic antagonist that is effective orally, longer lasting and more potent than naloxone, and has been proposed for the treatment of heroin addiction. The FDA has approved naltrexone for the treatment of alcohol dependence.. naltrexone : An organic heteropentacyclic compound that is naloxone substituted in which the allyl group attached to the nitrogen is replaced by a cyclopropylmethyl group. A mu-opioid receptor antagonist, it is used to treat alcohol dependence. | 2.03 | 1 | 0 | cyclopropanes;
morphinane-like compound;
organic heteropentacyclic compound | antidote to opioid poisoning;
central nervous system depressant;
environmental contaminant;
mu-opioid receptor antagonist;
xenobiotic |
enkephalin, ala(2)-mephe(4)-gly(5)-
Enkephalin, Ala(2)-MePhe(4)-Gly(5)-: An enkephalin analog that selectively binds to the MU OPIOID RECEPTOR. It is used as a model for drug permeability experiments. | 1.97 | 1 | 0 | | |
enkephalin, leucine-2-alanine
Enkephalin, Leucine-2-Alanine: A delta-selective opioid (ANALGESICS, OPIOID). It can cause transient depression of mean arterial blood pressure and heart rate. | 1.96 | 1 | 0 | | |
dynorphins
Dynorphins: A class of opioid peptides including dynorphin A, dynorphin B, and smaller fragments of these peptides. Dynorphins prefer kappa-opioid receptors (RECEPTORS, OPIOID, KAPPA) and have been shown to play a role as central nervous system transmitters. | 1.97 | 1 | 0 | | |
peptide f
peptide F: pro-enkephalin intermediate | 2.37 | 2 | 0 | | |
peptide e (adrenal medulla)
peptide E (adrenal medulla): kappa opiate receptor agonist; 25-amino acid opioid peptide which when cleaved at the sole double basic (Lys-Arg) typical processing site generates the amino-terminal fragment BAM 18 & the carboxy-terminal fragment Leu-enkephalin; structure given in first source; | 3.07 | 5 | 0 | | |
neuropeptide y
Neuropeptide Y: A 36-amino acid peptide present in many organs and in many sympathetic noradrenergic neurons. It has vasoconstrictor and natriuretic activity and regulates local blood flow, glandular secretion, and smooth muscle activity. The peptide also stimulates feeding and drinking behavior and influences secretion of pituitary hormones. | 1.97 | 1 | 0 | | |
peptide phi
Peptide PHI: A 27-amino acid peptide with histidine at the N-terminal and isoleucine amide at the C-terminal. The exact amino acid composition of the peptide is species dependent. The peptide is secreted in the intestine, but is found in the nervous system, many organs, and in the majority of peripheral tissues. It has a wide range of biological actions, affecting the cardiovascular, gastrointestinal, respiratory, and central nervous systems. | 1.97 | 1 | 0 | | |
bam 18p
BAM 18P: opioid peptide derived form proenkephalin A | 1.97 | 1 | 0 | | |
dynorphins
dynorphin (1-13): potent opioid peptide; see also record for dynorphin & D-Ala(2)-dynorphin (1-11) | 1.97 | 1 | 0 | | |
bam 12p
BAM 12P: Pro-Met-enkephalin precursor; isolated from bovine adrenal medulla; dodecapeptide Tyr-Gly-Gly-Phe-Met-Arg-Arg-Val-Gly-Arg-Pro-Glu | 3.22 | 6 | 0 | | |
vasoactive intestinal peptide
Vasoactive Intestinal Peptide: A highly basic, 28 amino acid neuropeptide released from intestinal mucosa. It has a wide range of biological actions affecting the cardiovascular, gastrointestinal, and respiratory systems and is neuroprotective. It binds special receptors (RECEPTORS, VASOACTIVE INTESTINAL PEPTIDE). | 1.97 | 1 | 0 | | |
gastrin-releasing peptide
Gastrin-Releasing Peptide: Neuropeptide and gut hormone that helps regulate GASTRIC ACID secretion and motor function. Once released from nerves in the antrum of the STOMACH, the neuropeptide stimulates release of GASTRIN from the GASTRIN-SECRETING CELLS. | 1.97 | 1 | 0 | | |
enkephalin-met, arg(6)-phenh2(7)-
enkephalin-Met, Arg(6)-PheNH2(7)-: heptapeptide enkephalinamide analog | 1.97 | 1 | 0 | | |
adrenomedullin
Adrenomedullin: A 52-amino acid peptide with multi-functions. It was originally isolated from PHEOCHROMOCYTOMA and ADRENAL MEDULLA but is widely distributed throughout the body including lung and kidney tissues. Besides controlling fluid-electrolyte homeostasis, adrenomedullin is a potent vasodilator and can inhibit pituitary ACTH secretion. | 2.06 | 1 | 0 | | |
preproenkephalin
preproenkephalin: initial enkephalin precursor | 2.65 | 3 | 0 | | |