| Substance | Relationship Strength | Studies | Trials | Classes | Roles |
|---|
carnitine
[no description available] | 2.48 | 2 | 0 | amino-acid betaine | human metabolite;
mouse metabolite |
3-hydroxybutyric acid
3-Hydroxybutyric Acid: BUTYRIC ACID substituted in the beta or 3 position. It is one of the ketone bodies produced in the liver.. 3-hydroxybutyric acid : A straight-chain 3-hydroxy monocarboxylic acid comprising a butyric acid core with a single hydroxy substituent in the 3- position; a ketone body whose levels are raised during ketosis, used as an energy source by the brain during fasting in humans. Also used to synthesise biodegradable plastics. | 2.4 | 2 | 0 | (omega-1)-hydroxy fatty acid;
3-hydroxy monocarboxylic acid;
hydroxybutyric acid | human metabolite |
methylmalonic acid
Methylmalonic Acid: A malonic acid derivative which is a vital intermediate in the metabolism of fat and protein. Abnormalities in methylmalonic acid metabolism lead to methylmalonic aciduria. This metabolic disease is attributed to a block in the enzymatic conversion of methylmalonyl CoA to succinyl CoA.. methylmalonic acid : A dicarboxylic acid that is malonic acid in which one of the methylene hydrogens is substituted by a methyl group. | 1.96 | 1 | 0 | C4-dicarboxylic acid | human metabolite |
2-methylcitric acid
2-methylcitric acid: RN given refers to parent cpd | 2.17 | 1 | 0 | tricarboxylic acid | |
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. | 2.47 | 2 | 0 | 2-hydroxy monocarboxylic acid | algal metabolite;
Daphnia magna metabolite |
glycine
[no description available] | 4.34 | 20 | 0 | alpha-amino acid;
amino acid zwitterion;
proteinogenic amino acid;
serine family amino acid | EC 2.1.2.1 (glycine hydroxymethyltransferase) inhibitor;
fundamental metabolite;
hepatoprotective agent;
micronutrient;
neurotransmitter;
NMDA receptor agonist;
nutraceutical |
propionic acid
propionic acid : A short-chain saturated fatty acid comprising ethane attached to the carbon of a carboxy group. | 1.96 | 1 | 0 | saturated fatty acid;
short-chain fatty acid | antifungal drug |
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. | 2.31 | 1 | 0 | monohydroxyquinoline;
quinolinemonocarboxylic acid | G-protein-coupled receptor agonist;
human metabolite;
neuroprotective agent;
nicotinic antagonist;
NMDA receptor antagonist;
Saccharomyces cerevisiae metabolite |
alanine
Alanine: A non-essential amino acid that occurs in high levels in its free state in plasma. It is produced from pyruvate by transamination. It is involved in sugar and acid metabolism, increases IMMUNITY, and provides energy for muscle tissue, BRAIN, and the CENTRAL NERVOUS SYSTEM.. alanine : An alpha-amino acid that consists of propionic acid bearing an amino substituent at position 2. | 2.17 | 1 | 0 | alanine zwitterion;
alanine;
L-alpha-amino acid;
proteinogenic amino acid;
pyruvate family amino acid | EC 4.3.1.15 (diaminopropionate ammonia-lyase) inhibitor;
fundamental metabolite |
methionine
Methionine: A sulfur-containing essential L-amino acid that is important in many body functions.. methionine : A sulfur-containing amino acid that is butyric acid bearing an amino substituent at position 2 and a methylthio substituent at position 4. | 2.17 | 1 | 0 | aspartate family amino acid;
L-alpha-amino acid;
methionine zwitterion;
methionine;
proteinogenic amino acid | antidote to paracetamol poisoning;
human metabolite;
micronutrient;
mouse metabolite;
nutraceutical |
isoleucine
Isoleucine: An essential branched-chain aliphatic amino acid found in many proteins. It is an isomer of LEUCINE. It is important in hemoglobin synthesis and regulation of blood sugar and energy levels.. isoleucine : A 2-amino-3-methylpentanoic acid having either (2R,3R)- or (2S,3S)-configuration.. L-isoleucine : The L-enantiomer of isoleucine. | 3.23 | 6 | 0 | aspartate family amino acid;
isoleucine;
L-alpha-amino acid zwitterion;
L-alpha-amino acid;
proteinogenic amino acid | algal metabolite;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
plant metabolite;
Saccharomyces cerevisiae metabolite |
methylethyl ketone
methylethyl ketone: solvent; colorless synthetic resins, smokeless powders; may be irritating to eyes, mucous membranes; may be toxic in high concentrations; structure. butanone : Any ketone that is butane substituted by an oxo group at unspecified position.. butan-2-one : A dialkyl ketone that is a four-carbon ketone carrying a single keto- group at position C-2. | 1.97 | 1 | 0 | butanone;
dialkyl ketone;
methyl ketone;
volatile organic compound | bacterial metabolite;
polar aprotic solvent |
pyridoxic acid
Pyridoxic Acid: The catabolic product of most of VITAMIN B 6; (PYRIDOXINE; PYRIDOXAL; and PYRIDOXAMINE) which is excreted in the urine.. 4-pyridoxic acid : A methylpyridine that is 2-methylpyridine substituted by a hydroxy group at C-3, a carboxy group at C-4, and a hydroxymethyl group at C-5. It is the catabolic product of vitamin B6 and is excreted in the urine.. 4-pyridoxate : A pyridoxate that is the conjugate base of 4-pyridoxic acid, obtained by deprotonation of the carboxy group. | 2.31 | 1 | 0 | hydroxymethylpyridine;
methylpyridines;
monohydroxypyridine;
vitamin B6 | human urinary metabolite;
mouse metabolite |
methyl acetoacetate
methyl acetoacetate: structure | 1.97 | 1 | 0 | oxo carboxylic acid | |
monomethyl succinate
methylsuccinic acid: RN given refers to cpd without isomeric designation. methylsuccinic acid : A racemate comprising equimolar amounts of (R)- and (S)-methylsuccinic acid. 2-methylbutanedioic acid : A dicarboxylic acid that is butanedioic acid substituted at position 2 by a methyl group. | 1.99 | 1 | 0 | dicarboxylic acid | |
ethylmalonic acid
ethylmalonic acid: don't confuse with diethyl malonate, which is a diester. ethylmalonate : A dicarboxylic acid anion obtained by deprotonation of at least one of the carboxy groups of ethylmalonic acid.. ethylmalonic acid : A dicarboxylic acid obtained by substitution of one of the methylene hydrogens of malonic acid by an ethyl group. | 1.99 | 1 | 0 | dicarboxylic acid;
dicarboxylic fatty acid | human metabolite |
phenyl acetate
phenyl acetate: The ester formed between phenol and acetic acid. Don't confuse with phenylacetic acid derivatives listed under PHENYLACETATES.. phenyl acetate : An acetate ester obtained by the formal condensation of phenol with acetic acid. | 2.02 | 1 | 0 | benzenes;
phenyl acetates | |
s-adenosylmethionine
acylcarnitine: structure in first source. S-adenosyl-L-methioninate : A sulfonium betaine that is a conjugate base of S-adenosyl-L-methionine obtained by the deprotonation of the carboxy group. | 2.1 | 1 | 0 | sulfonium betaine | human metabolite |
ng-nitroarginine methyl ester
NG-Nitroarginine Methyl Ester: A non-selective inhibitor of nitric oxide synthase. It has been used experimentally to induce hypertension. | 2.02 | 1 | 0 | alpha-amino acid ester;
L-arginine derivative;
methyl ester;
N-nitro compound | EC 1.14.13.39 (nitric oxide synthase) inhibitor |
xanthosine
[no description available] | 2.31 | 1 | 0 | purines D-ribonucleoside;
xanthosines | Escherichia coli metabolite;
human metabolite;
mouse metabolite |
hydracrylic acid
3-hydroxypropionic acid : A 3-hydroxy monocarboxylic acid that is propionic acid in which one of the hydrogens attached to the terminal carbon is replaced by a hydroxy group. | 2.17 | 1 | 0 | 3-hydroxy monocarboxylic acid;
omega-hydroxy-short-chain fatty acid | Escherichia coli metabolite;
human metabolite |
beta-hydroxyisovaleric acid
3-hydroxyisovaleric acid : A 3-hydroxy monocarboxylic acid that is isovaleric acid substituted at position 3 by a hydroxy group. Used as indicator of biotin deficiency. | 2.41 | 2 | 0 | 3-hydroxy monocarboxylic acid | human metabolite |
coenzyme a
[no description available] | 1.94 | 1 | 0 | adenosine 3',5'-bisphosphate | coenzyme;
Escherichia coli metabolite;
mouse metabolite |
acetoacetyl coa
[no description available] | 1.96 | 1 | 0 | 3-oxo-fatty acyl-CoA | Escherichia coli metabolite;
mouse metabolite |
valerates
Valerates: Derivatives of valeric acid, including its salts and esters. | 2.9 | 4 | 0 | short-chain fatty acid anion;
straight-chain saturated fatty acid anion | plant metabolite |
caprylates
Caprylates: Derivatives of caprylic acid. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain a carboxy terminated eight carbon aliphatic structure.. octanoate : A straight-chain saturated fatty acid anion that is the conjugate base of octanoic acid (caprylic acid); believed to block adipogenesis. | 1.95 | 1 | 0 | fatty acid anion 8:0;
straight-chain saturated fatty acid anion | human metabolite;
Saccharomyces cerevisiae metabolite |
2-methylacetoacetic acid
2-methylacetoacetic acid : A 3-oxo monocarboxylic acid that is acetoacetic acid which is substituted at position 2 by a methyl group. | 2.71 | 3 | 0 | 3-oxo monocarboxylic acid | |
alpha-methyl-beta-hydroxybutyrate
2-methyl-3-hydroxybutyric acid: metabolite from isoleucine; RN given refers to cpd without isomeric designation. 3-hydroxy-2-methylbutanoic acid : A 3-hydroxy monocarboxylic acid that is butyric acid which is substituted by a methyl group and a hydroxy group at positions 2 and 3, respectively. | 3.78 | 11 | 0 | 3-hydroxy monocarboxylic acid | |
2-ethylhydracrylic acid
2-ethylhydracrylic acid: newly described urinary organic acid; a metabolite of L-isoleucine; structure. 2-ethylhydracrylic acid : A branched-chain saturated fatty acid that is butanoic acid substituted by a hydroxymethyl group at position 2. It is a metabolite derived from the isoleucine metabolism. | 2.05 | 1 | 0 | branched-chain saturated fatty acid;
hydroxy fatty acid;
short-chain fatty acid | human metabolite |
2-methylbutyrylglycine
2-methylbutyrylglycine: metabolite of L-isoleucine. N-(2-methylbutanoyl)glycine : A N-acylglycine that is glycine substituted by a 2-methylbutanoyl group at the N atom. | 2.38 | 2 | 0 | N-acylglycine | human metabolite |
indican
[no description available] | 2.31 | 1 | 0 | beta-D-glucoside;
exopolysaccharide;
indolyl carbohydrate | |
acetyl coenzyme a
Acetyl Coenzyme A: Acetyl CoA participates in the biosynthesis of fatty acids and sterols, in the oxidation of fatty acids and in the metabolism of many amino acids. It also acts as a biological acetylating agent. | 1.96 | 1 | 0 | acyl-CoA | acyl donor;
coenzyme;
effector;
fundamental metabolite |
n-isovalerylglycine
N-isovalerylglycine: urinary metabolite of isovaleric acid in isovaleric acidemia (sweaty feet syndrome). N-isovalerylglycine : An N-acylglycine in which the acyl group is specified as isovaleryl. | 2.41 | 2 | 0 | N-acylglycine | human urinary metabolite |
cinnamoylglycine
cinnamoylglycine: structure given in first source. N-cinnamoylglycine : An N-acylglycine in which the acyl group is specified as (2E)-3-phenylprop-2-enoyl (cinnamoyl). | 2.31 | 1 | 0 | N-acylglycine | metabolite |
4-cresol sulfate
p-cresol sulfate : An aryl sulfate that is p-cresol in which the phenolic hydrogen has been replaced by a sulfo group. | 2.31 | 1 | 0 | aryl sulfate | gut flora metabolite;
human metabolite;
uremic toxin |
tiglyl-coenzyme a
2-methylbut-2-enoyl-coenzyme A : An alk-2-enoyl-CoA that results from the formal condensation of the thiol group of coenzyme A with the carboxy group of 2-methylbut-2-enoic acid. | 1.96 | 1 | 0 | 2-enoyl-CoA;
monounsaturated fatty acyl-CoA | |
n-isobutyrylglycine
N-isobutyrylglycine: found in urine of patients with glyceric acidemia. N-isobutyrylglycine : An N-acylglycine in which the acyl group is specified as isobutryl. | 1.95 | 1 | 0 | N-acylglycine | human urinary metabolite |