Oxetacillin was developed as an antibacterial drug that has never been marketed.

Penirolol is a beta-adrenergic blocking agent that was studied as an antihypertensive agent. Information about the further development of this drug is not available.

ISOXAPROLOL is a potent beta-adrenoceptor antagonist with antihypertensive properties. It was effective in lowering blood pressure in acute trials on spontaneously hypertensive rats at a dosage of 15 mg/kg.

Fenbenicillin (phenoxybenzylpenicillin) is an acid-stable, orally active penicillin. Fenbenicillin demonstrated antibacterial activity in patients suffering from streptococcal, pneumococcal, and penicillin-sensitive staphylococcal infections.

Ceftiolene (42980RP) is a new cephalosporin with a broad antibacterial spectrum similar to cefotaxime or ceftriaxone. The affinities of ceftiolene for penicillin-binding proteins are very comparable with those of ceftriaxone and cefotaxime for Escherichia coli, and generally greater than those of latamoxef (moxalactam) for the higher molecular weight PBPs of E. coli. Enterobacter cloacae. The affinity of ceftiolene for PBP1 of Staphylococcus aureus is greater than those of cefotaxime or latamoxef but comparable with these antibiotics for PBP3. The bacteriolytic activity of ceftiolene at defined concentrations against Gram-negative organisms is similar to that of ceftriaxone and significantly better than that of the other third-generation cephalosporins tested.

Caprindolol, also known as SDZ 21009, is a beta-adrenoceptor blocker with affinity for serotonin (5-HT1A and 5-HT1B receptors.

Bometolol is a cardiospecific beta-adrenergic blocking drug that was never marketed.

Dexefaroxan is a selective alpha 2-adrenergic receptor antagonist. Вexefaroxan improved TgCRND8 (protein-transgenic mouse model of Alzheimer's disease) behavioral phenotypes and increased BDNF mRNA expression without affecting amyloid-β peptide levels. Dexefaroxan treatment also enhanced the number and complexity of the dendritic arborizations of polysialated neural cell adhesion molecule-positive neurons. The trophic effects of dexefaroxan on newborn cells might involve an increase in brain-derived neurotrophic factor, which was upregulated in afferent noradrenergic fiber projection areas and in neurons in the granule cell layer. By promoting the survival of new endogenously formed neurons, dexefaroxan treatment represents a potential therapeutic strategy for maintaining adult neurogenesis in neurodegenerative conditions, such as Alzheimer's disease, that affect the hippocampus. Dexefaroxan increases neuron survival in the olfactory bulb of the adult rat in vivo, putatively as a result of reducing the apoptotic fate of telencephalic stem cell progenies.

Dioxadilol is benzodioxane derivative. It has beta-adrenolytic activity. Dioxadilol is antihypertensive, antianginal and antiarrhythmic agent but less potent than propranolol.