Guaimesal was studied for the treatment of exacerbated chronic bronchitis

Ifoxetine was developed as an unusual drug that specifically and selectively blocks the 5-HT reuptake in the brain without affecting the 5-HT uptake processes in the periphery (blood platelets). The drug was undergoing phase II clinical trials for the treatment of depression; however, the study was suspended.

Ociltide (also known as Hoe 825), an enkephalin peptide that via inhibition of the inhibitory nervous system could influence on esophageal motility, fundic accommodation to distention, and migrating myoelectric complex. Information about the current development of this drug is not available.

Nileprost is a prostacyclin analogue stabilized by introduction of the cyano group at its 5-position. Nileprost is a mixed type PGI2/PGE2 agonist. The development of the prostaglandin analogue nileprost [ZK 34798] for use in peptic ulcers has been discontinued at phase II by Schering AG in Germany.

Monalazone is a sulfonylbenzoic acid derivative used as vaginal disinfectant or antiseptic and spermicidal contraceptive.

Igmesine is a sigma-1 receptor agonist. It was assayed in clinical trials targeting major depressive disorder. Igmesine is the only antisecretory agent that we have tested to date that inhibits both cholera toxin and the E. coli enterotoxins. Sigma receptors are known to be present on nerves in the enteric nervous system and this would seem to be a potentially useful class of drugs to pursue for the treatment of secretory diarrhoea in humans. It was shown that when Alzheimer's disease rats were submitted to the conditioned fear stress test, igmesine can significantly reduce the stress-induced motor suppression, indicating exogenous σ-1 receptor agonists may alleviate Alzheimer's disease-associated depressive symptoms.

Furaprofen (also known as R-803), a nonsteroidal drug possesses anti-inflammatory properties. This drug was studied for the treatment of rheumatoid arthritis. However, information about the further development of this drug is not available.

Relomycin is a macrolide antibiotic that was first reported in the literature in 1963. It is a fermentation product of Streptomyces hygroscopicus and has also been observed in cultures of Streptomyces fradiae (a species of Actinobacteria).

Dimepheptanol is one of the phenylpiperidine series, an opioid receptor agonist, which is active as an opioid analgesic. It is also elaborated in a number of close analogues, derivatives or diastereoisomers with similar properties. Dimepheptanol is a synthetic narcotic analgesic that has no accepted medical use in the United States.