Nitrofurans are a class of drugs typically used as antibiotics or antimicrobials. The defining structural component is a furan ring with a nitro group.

Nandrolone (19-nortestosterone) is an anabolic steroid that may be present naturally in the human body, albeit in minute quantities of less than 0.4 ng/ml.[citation needed] Nandrolone is most commonly sold commercially as its decanoate ester (Deca-Durabolin) and less commonly as a phenylpropionate ester (Durabolin). Nandrolone decanoate is used in the treatment of osteoporosis in postmenopausal […]

Alanine (Ala, A), or 2-aminopropanoic acid, is a non-essential alpha-amino acid. It exists as two distinct enantiomers – L-Alanine and D-Alanine. L-Alanine is one of the 20 amino acids most widely used in protein synthesis, second to leucine, accounting for 7.8% of the primary structure in a sample of 1,150 proteins. D-Alanine occurs in bacterial […]

Agmatine, an aminoguanidine ((4-aminobutyl)guanidine), was discovered in 1910 by the Nobel laureate Albrecht Kossel.It is a common natural compound synthesized by decarboxylation of the amino acid arginine, hence also known as decarboxylated arginine.Agmatine has been shown to exert modulatory action at multiple molecular targets, notably: neurotransmitter systems, key ion channels, nitric oxide (NO) synthesis and […]

Acrolein, a reactive alpha, beta-unsaturated aldehyde, is a common environmental pollutant, a metabolite of the anticancer drug cyclophosphamide, and a byproduct of lipid peroxidation. An increase in acrolein production has been proposed as a marker for Alzheimer’s disease, diabetic glomerular lesions, and atherosclerosis. Acrolein is a potent inhibitor of cell proliferation at nonlethal doses and […]

Diethylstilbestrol is a hormonal therapy used to treat prostate cancer.

Dienestrol is a synthetic estrogen.

Dexamethasone is a potent synthetic member of the glucocorticoid class of steroid drugs that has anti-inflammatory and immunosuppressant effects. It is 25 times more potent than cortisol in its glucocorticoid effect, while having minimal mineralocorticoid effect.

The chemical compound Acetylcholine, often abbreviated as ACh, was the first neurotransmitter to be identified. It is a chemical transmitter in the central nervous system (CNS) as well as in the parasympathetic nervous system in many organisms including humans. When it binds to Acetylcholine receptors of muscle fibers, stimulates those fibers to contract. Acetylcholine is […]

Acetylcysteine, also known as N-acetylcysteine (NAC), is a medication that is used to treat paracetamol (acetaminophen) overdose, and to loosen thick mucus in individuals with cystic fibrosis or chronic obstructive pulmonary disease. It can be taken intravenously, by mouth, or inhaled as a mist. Some people use it as a dietary supplement.