2-Deoxy-D-glucose (2-DG) is an analog of glucose, an inhibitor of glycolysis. 2-Deoxy-D-glucose has antiviral activity, as well as inhibitory cell proliferation and apoptosis-inducing activity.

Prostaglandin E1 (Alprostadil) is the naturally occurring prostaglandin E1 (PGE1) which displays a variety of pharmacologic actions. Prostaglandin E1 is a potent vasodilator agent that increases peripheral blood flow, inhibits platelet aggregation, and induces bronchodilation. Used in the treatment of erectile dysfunction, this agent produces corporal smooth muscle relaxation by binding to PGE receptors, resulting in the activation of adenylate cyclase and the subsequent accumulation of 3'5'-cAMP.

Anandamide ((5Z,8Z,11Z,14Z)-N-(2-Hydroxyethyl)icosa-5,8,11,14-tetraenamide), an immune modulator, acts via not only cannabinoid receptors (CB1 and CB2) but also other targets (e.g., GPR18 GPR55) in the central nervous system.

Itaconic acid is a precursor for the synthesis of polymers, chemicals, and fuels, and has anti-inflammatory activity.Itaconic acid can be synthesized by fungi. It is also a macrophage-specific metabolite. It mediates crosstalk between macrophage metabolism and peritoneal tumors.

gamma-Linolenic acid (gamolenic acid), is an unsaturated fatty acid synthesized from linoleic acid (LA) by the enzyme delta-6-desaturase. Research on hepatocellular cell lines has shown γ-Linolenic Acid to have induced reactive oxygen species generation including lipid peroxidation, cell growth inhibition, and heme oxygenase-1 production for antioxidant protection against oxidative stress. Further experiments have noted that γ-Linolenic acid inhibits inflammatory responses through inactivation of NFκB and activator protein-1 by suppressed oxidative stress.

Petroselinic acid (5-Heptadecylene-1-carboxylic acid) is a monounsaturated omega-12 fatty acid found naturally in plant and animal oils and fats.

Nervonic acid (Selacholeic acid) is a long chain unsaturated fatty acid that is enriched in sphingomyelin. It consists of choline, sphingosine, phosphoric acid, and fatty acid. Nervonic acid may enhance the brain functions and prevent demyelination (Chemical Land21). Research shows that there is negative relationship between nervonic acid and obesity-related risk factors. Demyelination in adrenoleukodystrophy (ALD) is associated with an accumulation of very long chain saturated fatty acids stemming from a genetic defect in the peroxisomal beta oxidation system responsible for the chain shortening of these fatty acids. Sphingolipids from post mortem ALD brain have decreased levels of nervonic acid, 24:1(n-9), and increased levels of stearic acid, 18:0.

3-Hydroxyisovaleric acid (Beta-Hydroxyisovaleric acid) is an endogenous metabolite excreted in the urine and can serve as an early and sensitive indicator of biotin deficiency.

Palmitoleic acid ((Z)-Hexadec-9-enoic acid) is found to be associated with isovaleric acidemia, which is an inborn error of metabolism.

Methyl 2-(3-oxo-2-(pent-2-en-1-yl)cyclopentyl)acetate ((±)-Jasmonic Acid methyl ester) induces the synthesis of proteinase inhibitors in plant leaves, suppresses proliferation, and induces apoptosis in cancer cells. It inhibits hexokinase bound to mitochondria, disrupting mitochondrial hexokinase activity to selectively target and kill cancer cells. Derivatives of Methyl 2-(3-oxo-2-(pent-2-en-1-yl)cyclopentyl)acetate also exhibit potential as anti-inflammatory agents, and the compound has been primarily detected in urine.

Increased levels of erucic acid (22:1n9) have been found in the red blood cell membranes of autistic subjects with developmental regression (PMID: 16581239 ). Erucic acid (13(Z)-Docosenoic Acid) is broken down long-chain acyl-coenzyme A (CoA) dehydrogenase, which is produced in the liver. This enzyme breaks this long chain fatty acid into shorter-chain fatty acids. human infants have relatively low amounts of this enzyme and because of this, babies should not be given foods high in erucic acid. Erucic acid is found to be associated with isovaleric acidemia, which is an inborn error of metabolism.

Acetyl-L-carnitine hydrochloride (Acetyl L-carnitine hydrochloride) is a nutritional supplement composed of the hydrochloride salt form of the acetylated form of the endogenously produced L-carnitine, with potential neuroprotective, cognitive-enhancing, anti-depressive and immunomodulating activities. It may also relieve peripheral neuropathy induced by chemotherapy, diabetes or other diseases. In addition, acetyl-L-carnitine may modulate the immune response by increasing T-lymphocytes maturation and may downregulate pro-inflammatory cytokines in response to viruses, such as SARS-CoV-2. It may also disrupt the ACE2 signaling pathway and inhibit the production of reactive oxygen species (ROS).

Decanoic Acid (Caprynic acid) acts as a non-competitive AMPA receptor antagonist.

N-(3-Methoxybenzyl)-(9Z,12Z,15Z)-octadecatrienamide (Macamide Impurity 14) induces osteogenic differentiation and subsequent bone formation of mesenchymal stem cells by activating the canonical Wnt β-catenin signaling pathway, making it useful for osteoporosis research.

Heptadecanoic acid is a fatty acid of exogenous (primarily ruminant) origin. Many odd length long chain amino acids are derived from the consumption of dairy fats (milk and meat). Heptadecanoic acid constitutes 0.61% of milk fat and 0.83% of ruminant me

Tricosanoic acid (Tricosan-1-oic acid) , also known as N-tricosanoate or tricosylate, belongs to the class of organic compounds known as very long-chain fatty acids.Tricosanoic acid has been detected in multiple biofluids, such as blood and urine. Within the cell, Tricosanoic acid is primarily located in the membrane (predicted from logP), cytoplasm and adiposome. Tricosanoic acid is also a parent compound for other transformation products, including but not limited to, beta-D-galactosyl-N-(tricosanoyl)sphingosine, beta-D-galactosyl-(1->4)-beta-D-glucosyl-(11)-N-tricosanoylsphingosine, and N-(tricosanoyl)-[(4E,6E)-tetradecasphingadienine]-1-phosphoethanolamine. Outside of the human body, Tricosanoic acid can be found in citrus, date, and papaya. This makes Tricosanoic acid a potential biomarker for the consumption of these food products.

7-Methylxanthine is a methyl derivative of xanthine, the purine component of human urinary calculi.7-Methylxanthine has an affinity for adenosine receptors.7-Methylxanthine is a methyl derivative of xanthine, the purine component of human urinary calculi.7-Methylxanthine has an affinity for adenosine receptors.

Arachidic acid (Icosanoic Acid) is a saturated fatty acid found naturally in fish and vegetable oils (such as those from peanuts). It can also be formed by the hydrogenation of arachidonic acid. Diets rich in saturated fatty acids, such as arachidic acid, are known to increase serum low-density lipoproteins resulting in high blood cholesterol levels.

Octanoic acid (Caprylic acid), found naturally in coconuts and breast milk, is an oily liquid with a slightly unpleasant rancid taste and minimal solubility in water. It is commercially utilized in the production of esters for perfumery and in dye manufacturing.

1-Hexadecanol (Hexadecan-1-ol), a fatty alcoholis, is utilized for making other chemicals.

3-(Methylthio)propionic acid (4-Thiapentanoic acid) is one of the metabolites of methionine (especially of D-methionine). Cultures of Streptomyces lincolnensis accumulated 3-methylthioacrylic acid in amounts directly related to the concentration of methionine in the medium. The first intermediate in the pathway may be the keto acid, which is then oxidatively decarboxylated to 3-methylthiopropionic acid.

Elaidic acid (trans-Oleic Acid) is the 9-trans isomer of oleic acid. It is a monounsaturated trans-fatty acid which can be found in partially hydrogenated cooking oils. In human platelets incubated with arachidonic acid, elaidic acid inhibits HHT and HETE formation while inducing prostaglandin and thromboxane synthesis.

Heneicosanoic acid (C21:0) (HEA) is a fatty acid found in human milk fat. HEA is also a part of the phospholipids of the articular cartilage boundary lubricant. HEA is a constituent of red blood cell fatty acids.

Docosanoic acid (Behenic Acid) is a long-chain saturated fatty acid. It has been found in peanut and M. oleifera seed oils.

Nonanoic acid (Nonoic acid) is a fatty acid which occurs naturally as esters are the oil of pelargonium. Synthetic esters, such as methyl nonanoate, are used as flavorings. Pelargonic acid is an organic compound composed of a nine-carbon chain terminating in a carboxylic acid. It is an oily liquid with an unpleasant, rancid odor. It is nearly insoluble in water, but well soluble in chloroform and ether.

1-Hydroxyoctadecane (OctadecanolOctadecanol) is a fatty alcohol present in human and is normally incorporated into plasmalogen lipids. Sjogren-Larsson syndrome is defined by the triad of ichthyosis, mental retardation, and spasticity, and patients accumulate fatty alcohols such as Octadenol in the plasma and cultured fibroblasts.

2-Methylsuccinic acid (Pyrotartaric Acid) is a normal metabolite found in human fluids. Increased urinary levels of 2-Methylsuccinic acid (Pyrotartaric Acid) (together with ethylmalonic acid) are the main biochemical measurable features in ethylmalonic encephalopathy, a rare metabolic disorder with an autosomal recessive mode of inheritance that is clinically characterized by neuromotor delay, hyperlactic acidemia, recurrent petechiae, orthostatic acrocyanosis, and chronic diarrhea.

(E)-Oct-2-enoic acid (2-Octenoate) is an organic acid produced by hepatic microsomal oxidation of aliphatic aldehydes and is a metabolite naturally present in urine and plasma.

2-Methylpentanedioic acid (alpha-Methylglutarate) is an organic acid normally found in human urine, in healthy adults and children. 2-Methylpentanedioic acid (alpha-Methylglutarate) is a metabolite of succinic acid, a citric acid cycle intermediate.

Tridecanoic acid (Tridecylic Acid) is a 13-carbon saturated fatty acid found in dairy products and also as a product of anaerobic biodegradation of n-hexadecane. It has been identified as a substrate of phospholipase A2.

Methylglutaric acid is a leucine metabolite. A large amount of methylglutaric acid is identified in urine of patients with deficiency of 3-methylglutaconyl coenzyme A hydratase (PMID 6181239 ). Methylglutaric acid is also found to be associated with 3-hyd

Ethylmalonic acid is potentially toxic, non-carcinogenic, and has been associated with anorexia nervosa and methoxy decarboxylase deficiency.

Calcium 2-hydroxy-4-(methylthio)butanoate (Calcium 2-hydroxy-4-(calcium hydroxymethionine)) is a solid, water-soluble, weakly acidic nutrition enhancer (based on its pKa). This compound, also known as 2-Hydroxy-4-(methylthio)butanoic acid, has been primarily detected in urine and is mainly located in the cytoplasm and adiposome of cells.

Suberic acid (1,8-Octanedioic acid) is present in the urine of patients with fatty acid oxidation disorders. A metabolic breakdown product derived from oleic acid. Elevated levels of this unstaruated dicarboxylic acid are found in individuals with medium-chain acyl-CoA dehydrogenase deficiency (MCAD). Suberic acid is also associated with carnitine-acylcarnitine translocase deficiency, malonyl-Coa decarboxylase deficiency.

3-Methylbut-2-enoic acid (Senecioic acid) appears in the urine of patients with 3-Methylcrotonic aciduria, which is a disorder characterized by urine that contains increased amounts of 3-methylcrotonic acid.

Trans-2-butene-1,4-dicarboxylic acid (3-Hexenedioic Acid) is a normal human unsaturated dicarboxylic acid metabolite with increased excretion in patients with Dicarboxylic aciduria caused by fatty acid metabolism disorders The urinary excretion of Trans-2-butene-1,4-dicarboxylic acid is increased in conditions of augmented mobilization of fatty acids or inhibited fatty acid oxidation.

2-Hydroxyhexanoic acid (2-Hydroxycaproic acid) is a branched-chain alpha-keto acid that has been reported in normal human blood and in normal amniotic fluid. It has been found that 2-Hydroxyhexanoic acid is the most significant metabolite found in the CSF of patients infected with Nocardia.

(S)-Leucic acid is an amino acid metabolite used as a muscle builder.

Citraconic acid (2-Methylmaleic Acid) is a dicarboxylic acid consisting of maleic acid having a methyl substituent at the 2-position.

Undecanoic acid (Hendecanoic acid) is a monocarboxylic acid with antimycotic property. Undecanoic acid inhibits the production of exocellular keratinase, lipase and the biosynthesis of several phospholipids in T. rubrum.

2-Hydroxy-2-methylbutyric acid is an unusual metabolite found in the urine of patients with 2-hydroxyglutaric aciduria and maple syrup urine disease.

Hexadecanedioic acid (1,16-Hexadecanedioic acid) is a common saturated fatty acid found in animals, plants and microorganisms. It has antitumor activity.

3-Methyladipic acid is a metabolite of the catabolism of phytanic acid. Patients with adult Refsums disease (ARD) are unable to detoxify phytanic acid by alpha-oxidation, and so the w-oxidation pathway is the only metabolic pathway available for phytanic

trans-trans-Muconic acid is a urinary metabolite of benzene.

Tridecanedioic acid (Brassilic acid) is an unusual odd-numbered dicarboxylic acid that appears in the urines of children with neonatal adrenoleukodystrophy and Zellweger syndrome, as an additional marker of these peroxisomal disorders.

Mono-Methyl glutarate is an endogenous metabolite i with anti-inflammatory and antioxidant activity.

Undecanedioic acid has been found in parts of human aortas with advanced atherosclerotic lesions associated with intercellular matrix macromolecules and specifically with elastin.