Thioglycolic acid (TGA, also known as MERCAPTOACETIC ACID) is widely used in the hairdressing industry, which mostly caters to women. TGA has been reported to impair several organs, especially reproductive ones such as testes and ovaries. Thioglycolates (the salt forms of TGA) was shown to penetrate the skin and distribute to the kidneys, lungs, small intestine, and spleen; excretion is primarily in the urine. In addition, thioglycolates can be skin irritants of an animal and can be sensitizers.

Octenidine dihydrochloride is a cationic surfactant, with antimicrobial activity against Gram-positive and Gram-negative bacteria. Octenidine approved as a medicinal substance in several European countries and used for skin antisepsis in combination with aliphatic alcohols, e.g. propan-1-ol and propan-2-ol, or with detergents such as antiseptic soap. Octenidine is also used for antisepsis on wounds and mucosa either as a single substance, as an approved combination of Octenidine and phenoxyethanol. Octenidine is virtually not absorbed via the skin or mucous membranes. Because Octenidine is only approved and used topically and is virtually not absorbed, no systemic effects are to be expected. Therefore, no further pharmacokinetic studies or studies on behalf of metabolism have been conducted. Octenidine is easy and safe to handle, chemically stable, not inflammable, without resistance development and low toxicity to man and the environment alike. Its popularity among therapists and wound care specialists is based on good clinical results, easy and pain-free application and local tolerance. Beside readily available combinations with phenoxyethanol, mouth rinses, and vaginal applications, semi-fluid preparations and dressings are described.

Stepronin is clinically used as an expectorant. It inhibits airway secretion in vitro by both decreasing Cl- secretion from epithelial cells and mucus glycoprotein secretion from submucosal glands. The mucolytic activity of stepronine does not involve the gastric mucous coating and that the drug does not exert adverse effects on the gastric mucosa. It is a new chemical immunosuppressant drug, which has the effect of preventing graft-versus-host-disease (GVHD) in a mouse model. The mechanism by which this compound acts as an immunosuppressant appears to be similar to cyclosporine A (CyA), although, in contrast to CyA, it is not toxic for animals and humans. Stepronin has an antiviral effect as well and is able to block, indirectly, the human immunodeficiency virus–1 (HIV-1) replication in mononuclear cells in vitro.

LEAD SESQUIOXIDE, a lead compound, can damage organs and tissues through prolonged or repeated exposure.

Orotic acid is a minor dietary constituent. Historically it was believed to be part of the vitamin B complex and was called vitamin B13, but it is now known that it is not a vitamin and is synthesized in the body, where it arises as an intermediate in the pathway for the synthesis of pyrimidine nucleotides. Orotic acid is converted to UMP by UMP synthase, a multifunctional protein with both orotate phosphoribosyl transferase and orotidylate decarboxylase activity. The most frequently observed inborn error of pyrimidine nucleotide synthesis is a mutation of the multifunctional protein UMP synthase. As a result, plasma orotic acid accumulates to high concentrations, and increased quantities appear in the urine. Orotic acid levels are elevated in the urea cycle defects ornithine transcarbamylase (OTC) deficiency, citrullinemia and argininosuccinic acidemia, as well as the mitochondrial transport disorder hyperornithinemia-hyperammonemia-homocitrullinuria (HHH) syndrome. Orotic acid is also elevated in hereditary orotic aciduria, or uridine monophosphate synthase deficiency, an autosomal recessive disorder characterized by megaloblastic anemia and crystalluria. In addition, orotic acid in combination with leflunomide is in the phase II of clinical trial to evaluate the clinical efficacy and safety of a combination in kidney transplant patients with high levels of Polyoma BK viruria for the purpose of preventing polyoma BK viremia and nephropathy, that could lead to kidney transplant loss from viral damage, acute rejection or both.

Ethacridine (Rivanol) is an acridine derivative indicated for the treatment of bacterial infections. In many countries the drug was in clinical practice for the second trimester termination of pregnancy.