Brifentanii, a potent narcotic analgesic structurally similar to alfentanil, that was studied in clinical trials in the early 1990s. The effects of brifentanil are very similar to those of alfentanil, with strong but short lasting analgesia and sedation, and particularly notable itching and respiratory depression. Side effects of Brifentanii are similar to those of fentanyl itself, which include itching, nausea and potentially serious respiratory depression, which can be life-threatening.

Eterobarb (Antilon) is a barbiturate derivative. It is an effective anticonvulsant as demonstrated in animal and clinical studies. Eterobarb possesses a unique and clinically intriguing feature-at therapeutically effective blood levels, the hypnotic side effects usually associated with barbiturates appear absent. Though effective against both electrically and chemically induced seizures in mice and rats, virtually no hypnotic effects were noted except at lethal doses. Double-blind cross-over studies have confirmed the anticonvulsant efficacy of eterobarb and several phase II and phase Ill studies show eterobarb to be an effective anticonvulsant with less hypnotic activity when compared with phenobarbital. Eterobarb had been NDA filed for the treatment of epilepsy in the US, UK, Switzerland and Canada. However, this research has been discontinued. The compound was originated by Colgate Palmolive, then licensed to MacroChem.

Etazolate (EHT-0202) is a selective, positive GABAA receptor modulator has completed phase II clinical trials in patients with Alzheimer's disease. It is also a selective phosphodiesterase-4 inhibitor that is specific for cAMP. Etazolate showed anxiolytic and antidepressant activity and could be useful in managing post-traumatic stress disorder.

Cilobradine is an Hyperpolarization-activated cyclic nucleotide-gated (HCN) channel blocker patented by a pharmaceutical company Boehringer Ingelheim G.m.b.H. for sinus tachycardia treatment. In clinical trials Cilobradine decrease Heart rate. Chronically increased heart rate (HR) is a risk factor for mortality and morbidity with adverse consequences on vascular function, atherogenesis, myocardial ischemia, myocardial energetics and left the ventricular function. Heart rate response was found to be concentration-dependent and appeared with a significant delay with respect to the time course of cilobradine in plasma.

Indocate is indole derivative and monoamine oxidase inhibitor with peripheral antiserotonin properties.

Levdobutamine is a beta-adrenoceptor agonist selective for the beta1-subtype. Levdobutamine was derived from dopamine. It is the active (S)-isomer of dobutamine. It is the cardiotonic agent.

Salethamide was developed as an anti-inflammatory agent to use as an analgesic. However, information about the further study of this compound is not available.

LADOSTIGIL, a rasagiline derivative, is a reversible acetylcholinesterase and butyrylcholinesterase inhibitor with neuroprotective properties. It also acts as an irreversible brain monoamine oxidases inhibitor. It is under development for the treatment of neurodegenerative disorders like dementia and Alzheimer's disease.

Bisbendazole was developed as an anthelmintic agent.