4-Carboxypyrazole is an endogenous metabolite.

D-Allothreonine is the D type stereoisomer of Allothreonine. D-Allothreonine is a peptido-lipid derived from bacteria. D-Allothreonine, amide-linked to the D-galacturonic acid, is also a constituent in the polysaccharide.

Cecropin P1, porcine is an antibacterial peptide originally identified in moths (Hyalophora cecropia) and later in pig intestine.

Defensin HNP-2 human is an endogenous antibiotic peptide and monocyte chemotactic peptide produced by human neutrophils.

Defensin HNP-1 human is a Human neutrophil peptides (HNPs), involved in endothelial cell dysfunction at the time of early atherosclerotic development.Defensin HNP-1 human can regulate the growth of atherosclerosis.

Atrial natriuretic factor (1-28) (human, porcine) (Atrial natriuretic peptide (1-28)) is an endogenous peptide produced by the heart, involved in blood pressure regulation. Atrial natriuretic factor (1-28) (human, porcine) produces natriuresis, diuresis and vasorelaxation in vivo.

Enterostatin (human,mouse,rat) TFA is a pentapeptide mainly formed in the intestine by the cleavage of secreted pancreatic procolipase. Enterostatin ?selectively reduces fat intake, bodyweight, and body fat in vivo.

Orotidine 5′-monophosphate is a pyrimidine ribonucleoside and plays a role as an endogenous metabolite of human, E. coli or mouse. Orotidine 5′-monophosphate is an intermediate in the biosynthesis of?uridine monophosphate (UMP). Orotidine 5′-monophosphate can be used for the study of mechanism of orotidine 5′-monophosphate decarboxylase.

all-trans-Anhydro Retinol (Anhydrovitamin A) is a metabolite of Vitamin A. all-trans-Anhydro Retinol is used in synthetic multivitamin preparations.

Nε,Nε,Nε-Trimethyllysine chloride serves as a precursor for gut flora-dependent formation of N,N,N-trimethyl-5-aminovaleric acid (TMAVA).

O-Desmethylangolensin is a metabolite of soy isoflavone, daidzein metabolized by gut microbiota. O-Desmethylangolensin possesses antioxidant activity.

(S)-Higenamine ((S)-Norcoclaurine) hydrobromide, a S-enantiomer of Higenamine, is the entry compound in benzylisoquinoline alkaloid biosynthesis. (S)-Higenamine hydrobromide is produced by the condensation of dopamine and 4-hydroxyphenylacetaldehyde (4-HPAA) by norcoclaurine synthase (NCS).

(S)-Higenamine ((S)-Norcoclaurine), a S-enantiomer of Higenamine, is the entry compound in benzylisoquinoline alkaloid biosynthesis. (S)-Higenamine is produced by the condensation of dopamine and 4-hydroxyphenylacetaldehyde (4-HPAA) by norcoclaurine synthase (NCS).

Propylparaben sodium (Propyl parahydroxybenzoate) is an antimicrobial preservative which can be produced naturally by plants and bacteria. Propylparaben sodium is prevalently used in cosmetics, pharmaceuticals, and foods. Propylparaben sodium disrupts antral follicle growth and steroidogenic function by altering the cell-cycle, apoptosis, and steroidogenesis pathways. Propylparaben sodium also decreases sperm number and motile activity in rats.

Lumisterol (9β,10α-Ergosterol), a steroid compound, is the (9β,10α)-stereoisomer of Ergosterol. Lumisterol is a photoprotective agent against UVB-induced DNA damage and anti-proliferative activities.

Indole-2-carboxylic acid is a strong inhibitor of lipid peroxidation. Indole-2-carboxylic acid (I2CA) specifically and competitively inhibits the potentiation by glycine of NMDA-gated current.

ATP dipotassium (Adenosine 5'-triphosphate dipotassium) is a central component of energy storage and metabolism in vivo, provides the metabolic energy to drive metabolic pumps and serves as a coenzyme in cells. ATP dipotassium is an important endogenous signaling molecule in immunity and inflammation.

Allantoic acid is a degradative product of uric acid and associated with purine metabolism.

Dehydroepiandrosterone sulfate sodium salt (DHEAS) is the most abundant circulating steroid in human. Dehydroepiandrosterone sulfate sodium salt (DHEAS) affects steroid hormone biosynthesis on a molecular level resulting in an increased formation of pregnenolone.

S-Adenosyl-L-methionine tosylate (S-Adenosyl methionine tosylate) is produced endogenously from methionine and ATP by action of the enzyme methionine adenosyltransferase and is an important orally active methyl group donor. S-Adenosyl-L-methionine tosylate is a dietary supplement with potent antidepressant and analgesic effects, and has the potential for liver disease and osteoarthritis research.

Methyl phenylacetate is an endogenous metabolite.

Norepinephrine tartrate (Levarterenol tartrate), a naturally occurring chemical in the body that acts as both a stress hormone and neurotransmitter, is a β1-selective adrenergic receptor agonist with EC50 of 5.37 μM.

2'-Deoxyadenosine-5'-triphosphate trisodium (dATP trisodium) is a nucleotide used in cells for DNA synthesis (or replication), as a substrate of DNA polymerase.

2'-Deoxyadenosine-5'-triphosphate (dATP) is a nucleotide used in cells for DNA synthesis (or replication), as a substrate of DNA polymerase.

Ternidazole hydrochloride is a hydroxymetabolite of nitroimidazole, has antiprotozoic properties.

[(3R)-3-Hydroxydodecanoyl]-L-carnitine is an endogenous metabolite.

trans-2-Hexadecenoyl-L-carnitine is an endogenous metabolite in urine.

Dichloroiodomethane is a natural compound in human beings.

4-Formylaminoantipyrine?is an excreted metabolite of?aminophenazone. Aminophenazone is a pyrazolone with analgesic, anti-inflammatory, and antipyretic effects in vivo.

Fructosyl-lysine (Fructoselysine) dihydrochloride is an amadori glycation product from the reaction of glucose and lysine by the Maillard reaction. Fructosyl-lysine dihydrochloride is the precursor to glucosepane, a lysine–arginine protein cross-link that can be an indicator in diabetes?detection.