Sodium aceneuramate is a sodium salt of aceneuramic acid (sialic acid). It is an effective inhalant expectorant. Inhalation of sodium aceneuramate repaired inflammation in the airway, and caused bronchitic rabbits to produce sputa with a low viscosity, similar to normal air-way secretions. Sodium aceneuramate protected the mucociliary transport impaired bycigarette smoke in a dose-dependent manner. The results suggest that sodium aceneuramate may participate in the defense mechanism in the airway against irritant gases. Sodium aceneuramate inhibited bronchial anaphylaxis and the release of histamine into bronchoalveolar lavages. Sodium aceneuramate has an action which elevates the viscoelasticity of secretions in the respiratory tract.

N-acetylmannosamine (ManNAc), a hexosamine monosaccharide, is the first committed biological precursor of Neu5Ac. N-acetylmannosamine is being investigated as a potential treatment for GNE myopathy. N-acetylmannosamine has being reported to improve the cognitive function in aged animals. It has potential therapeutic application for cognitive dysfunction. N-acetylmannosamine is under investigation for GNE myopathy.

2-Amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) is a mutagenic and carcinogenic heterocyclic amine formed during ordinary cooking, and is subsequently metabolically activated by cytochrome P4501A2 (CYP1A2) and N-acetyltransferase 2 (NAT2). PhIP has been used in trials studying the basic science of Pancreas Cancer.

Porfiromycin is an N-methyl derivative of the antineoplastic antibiotic mitomycin-C initially isolated from Streptomyces ardus. Upon administration, the drug undergoes chemical or enzymatic reduction, followed by spontaneous loss of the tertiary methoxy (hydroxyl) group and formation of an aromatic indole system. Thus activated, porfiromycin generates oxygen radicals and alkylates DNA, producing interstrand cross-links and single-strand breaks at guanosine residues. Porfiromycin was tested in phase III for head and neck carcinoma, however, its development was terminated.

Tetrachloroethylene is a nonflammable colorless liquid. Other names for tetrachloroethylene include perchloroethylene, PCE, PERC, tetrachloroethene, and perchlor. Tetrachloroethylene is used as a dry cleaning agent and metal degreasing solvent. It is also used as a starting material (building block) for making other chemicals and is used in some consumer products. It has also been used in water repellants, paint removers, printing inks, glues, sealants, polishes, and lubricants. Tetrachloroethylene has been in commercial use since the early 1900s. Tetrachlorethylene has been suspected of causing some types of cancer, based on both human and animal evidence. Laboratory studies have found that ingesting or inhaling tetrachlorethylene increased the risk of liver cancer in mice. In rats, inhaling tetrachloethylene was linked to kidney cancer and a rare type of leukemia. EPA has classified tetrachloroethylene as likely to be carcinogenic to humans by all routes of exposurebased on suggestive evidence in epidemiological studies and conclusive evidence in rats (mononuclear cellleukemia) and mice (increased incidence of liver tumors). The International Agency for Research on Cancer(IARC) has classified tetrachloroethylene as probably carcinogenic to humans (Group 2A).