Unithiol was developed in the Soviet Union in the late 1950s. It only became more widely used in America and Western Europe since the mid-1970s, and particularly since the late 1970s when the Heyl Company in Germany began production. It remained the mainstay of chelation treatment of arsenic and mercury intoxication for more than half a century. Unithiol has been used in the management of acute and chronic poisoning with a number of different metals and metalloids, and is particularly useful for arsenic, bismuth and mercury. Unithiol can be given parenterally or orally depending on the clinical situation and severity of poisoning. Its action mechanism is close that of complexones. Active sulfhydryl groups enter into reactions with thiol poisons present in blood and tissues, form not toxic complex with them eliminated with urine. The poisons fixation results in the body enzyme systems changed under the poisons effect functions restoration. It is efficient as an antidote in case of intoxications by arsenic and heavy metals salts.

Methylarsonic acid, monosodium salt is an organoarsenic compound formed from the methylation of inorganic arsenic by living organisms. Methylarsonate is used as a contact herbicide in either the monosodium or disodium salt form. It goes by the trade names Weed-E-Rad, Ansar 170 H.C., Ansar 529 H.C., DiTac and others. Methylarsonate is considered only slightly toxic, having an oral LD50 of 2200 mg/Kg for rats. The inhalation risk is greater with LD50 Rats >20 mg. Long term studies with people exposed to organoarsenicals has shown an increased risk of skin cancer (Spiewak, 2001), lung cancer and some liver cancers, although some recent studies have shown some arsenic containing compounds (specifically Arsine trioxide) may have anticarcinogenic properties (Wang, 2001). In mammals, Methylarsonate is also an intermediate in the detoxification of inorganic arsenic. In the arsenate detoxification I pathway, arsenite reacts with S-adenosyl-L-methionine to produce methylarsonate and S-adenosyl-L-homocysteine. Arsenite methyltransferase catalyzes this reaction. Methylarsonate then reacts with 2 glutathione molecules to produce glutathione disulfide and methylarsonite. This reaction is catalyzed by methylarsonate reductase. Methylarsonate is an organic arsenic compound with adverse effects similar to those of arsenic trioxide. Methylarsonate was formerly included in some vitamin and mineral preparations. It was once used to treat tuberculosis, chorea, and other affections in which the cacodylates were used.

Capobenic acid is an antiarrythmetic agent, vasodilator, antianginal used for the treatment of cardiac infarction.

Iocarmic acid is a molecule used in seventies as a contrast media for myelography. Iocarmate meglumine (Dimer-X), a water-soluble salt of iocarmic acid was reported to be safe and best tolerated by central nervous system compared to metrizamide in a double-blind test in patients with symptoms of lumbar and sacral root involvement. In the experimental and clinical studies of Dimer-X used for ventriculography the apparent superiority of Dimer-X over Conray 60 and Angiografin as far as side effects were concerned was demonstrated, but there were no particular differences in the intensities of the ventriculograms obtained. Morphological studies of the ventricles and histological examinations of the ventricular walls 1 month after injections of Dimer-X into the ventricles of dogs showed no abnormalities. In the clinical studies, ventriculography Dimer-X, performed on patients with diseases of the central nervous system, produced ventriculograms of good diagnostic value with no side effects, such as convulsions, apart from mild headache or vomiting in 4 instances. Ventriculography with Dimer-X was carried in 15 infants with myelomeningocele and progressive hydrocephalus. However, as was shown in a number of studies iocarmate produced moderate to severe arachnoiditis from myelography in primates. Early meningitis side effects following lumbar radiculography with iocarmate meglumine were demonstrated.

Sodium 1-Naphthaleneacetate (SODIUM 1-NAPHTHALENEACETATE) is a plant growth regulator. It has being shown that root application of certain concentration of sodium naphthalene acetate (SNA) could promote the growth of tomato seedlings by increasing the tomato root activity, protective enzymes activity, Pn and regulating endogenous hormone concentration under suboptimum temperature and light condition.

PARASORBIC ACID, a cyclic lactone of sorbic acid, was isolated from ripe berries of mountain ash (Sorbus aucuparia). It produced local sarcomas being administered by subcutaneous injection to rats.

OSBOND ACID (all-cis-4,7,10,13,16-DPA) is an isomer of docosapentaenoic acid (DPA). DPA is a 22-carbon fatty acid found in fish oils. It is a minor constituent of the total serum unsaturated fatty acids in humans, ranging from 0.1 to 1%, and is used as a dietary supplement. OSBOND ACID is an ω-6 fatty acid formed by the elongation and desaturation of arachidonic acid. It is considered a marker of the functional DHA status. Levels of this fatty acid may be diminished during fatty acid desaturase syndrome and this possibly affects development. One study found that high levels of maternal OSBOND ACID (22:5n−6) were associated with higher verbal IQ in their children. Upregulation of OSBOND ACID also correlates with tumor burden in nonalcoholic steatohepatitis (a common preneoplastic condition of hepatocellular carcinoma).

BMS-181162, a retinoid derivative, is a phospholipase A2 inhibitor. It was in clinical trials in the treatment of inflammatory diseases, atopic dermatitis, and psoriasis.

Xenazoic acid, an antiviral agent, was introduced in the early 1960s. Xenazoic acid might be of value in reducing the severity of meals infection if given early enough. Its use was associated with hepatic toxicity, which resulted in its withdrawal from the market in at least two countries (Belgium and France) in 1965. WHO has no information to suggest that xenazoic acid remains commercially available.