Mesotartaric acid is one of an isomer of Tartaric acid. Mesotartaric acid is a diastereomer which has two opposite chiral centers in the same molecule making the molecule optically inactive. Mesotartaric acid is also commonly called pyrotartaric acid because it is formed by heating d-(-)-tartaric acid. Mesotartaric Acid have several industrial application and may be used as pH regulator, a metal chelator, the reagent in organic synthesis and etc.

Viminol is an opioid analgesic developed by the company Zambon. It is marketed under tradename Dividol for the treatment of pain due to various causes, including the treatment of pain due to osteoarthritis, neuritic pain, vascular pain, visceral pain, neoplastic pain, and pain due to other sources. In vivo studies demonstrated that the analgesic effects of viminol depend on the stereo configuration: the R,R-enantiomer exhibit agonistic activity, while the S,S-enantiomer produce the opposite effect.

Amicarbalide (Diampron) is an aromatic diamidine exerting piroplasmocidal properties. It is effective against bovine and equine babesiosis and anaplasmosis.

Gilutensin is a drug that was developed for the treatment of hypotensive circulatory disorders. As there is no information available on the drug since 1970, its development is supposed to be terminated in early phase.

Picamilon (also known as N-nicotinoyl-GABA, Pycamilon, and Pikamilon) is a drug formed by a synthetic combination of niacin and GABA. It was developed in the Soviet Union in 1969 and further studied in both Russia and Japan as a prodrug of GABA. Picamilon permeated the blood-brain barrier and then is hydrolyzed into GABA and niacin. The released GABA, in theory, would activate GABA receptors potentially producing an anxiolytic response. The second released component, niacin, is a vasodilator. Today picamilon is sold in Russia as a prescription drug and is used for the treatment of a variety of illnesses and disorders, ranging from depression to a migraine, neuro infections, senile psychosis, certain types of glaucoma, and even acute alcohol intoxication. As of 2015, the FDA classified picamilon as a substance that does not meet the requirements of a dietary supplement and is therefore no longer permitted to be sold in the United States.

1-Naphthyl acetate may be used in a rapid staining method for identification of macrophages. And it was used as a susbtrate for different type of esterases, e.g. butyrylcholinesterase, α-naphthyl acetate esterase for determination of their properties towards to insecticide resistance.

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.

(R)-Sulindac is the (R)-enantiomer of nonsteroidal anti-inflammatory drug (NSAID) Sulindac, that is marketed in the U.S. by Merck as Clinoril. Sulindac is a prodrug, derived from sulfinylindene, that is converted in vivo to an active sulfide compound by liver methionine sulfoxide reductases (Msr). The (Msr) family of enzymes includes two major classes, MsrA and MsrB, that specifically reduce the S- and R-epimers of Sulindac. Reduction of (R)-Sulindac to Sulindac Sulfide catalyzed by methionine sulfoxide reductase (Msr)-B. The oxidation of both epimers to sulindac sulfone is catalyzed primarily by the microsomal cytochrome P450 (P450) system. (S)-Sulindac increases the activity of the P450 system better than (R)-sulindac, but both epimers increase primarily the enzymes that oxidize (R)-sulindac. Both epimers can protect normal lung cells against oxidative damage and enhance the killing of lung cancer cells exposed to oxidative stress.

Sulfamazone is a long-acting sulfonamide antibiotic with antipyretic properties. It is not approved by the FDA, but is marketed in Italy under tradename Marespin for the treatment of acute respiratory diseases; primary bacterial pharyngotonsillitis and tracheobronchitis or complications of the flu or other viral diseases of the upper respiratory tract.

Spaglumic acid (NAAG) is the β-aspartyl isoform of N-Acetyl-l-aspartylglutamate (isospaglumic Acid is N-(N-Acetyl-l-α-aspartyl)-l-glutamic acid). In eye drops, spaglumic acid is either a magnesium or sodium salt of N-Acetyl-l-aspartylglutamate. Spaglumic acid is a mast cell stabilizer. Thus it is used in allergic conditions such as allergic conjunctivitis. Specifically spaglumic acid is approved in Portugal under the brand name Naabak and in Greece under the brand name Naaxia for use in patients with allergic conjunctivitis. Spaglumic Acid is a peptide neurotransmitter and the third-most-prevalent neurotransmitter in the mammalian nervous system. It is a weak activator of NMDA receptors and a highly selective agonist for mGlu3 receptors. Spaglumic Acid is neuroprotective under non-hydrolysing conditions in vivo.