Pruvanserin (EMD 281014, LY-2422347) is a selective serotonin 5-HT2A receptor antagonist. Pruvanserin was originated by Merck KGaA. Eli Lilly had been developing pruvanserin, under a global licence from Merck KGaA, for the treatment of primary insomnia and major depressive disorder. Phase II trials were completed in the US, Hungary and Spain. However, development appears to have been discontinued.

Benzindopyrine belongs to anticholinergic agents. It was studied as an antipsychotic drug.

Sulamserod is a methanesulfonamide derivative patented by British multinational pharmaceutical company GlaxoSmithKline as 5-HT4 receptor antagonist, with antiarrhythmic activities for the treatment of the certain cardiovascular condition. 5-HT4 receptor blockade could have antiarrhythmic effects by decreasing intracellular Ca2+ concentration and delayed rectifier potassium current and prolonging atrial refractory period. In preclinical models, Sulamserod prolongs mean atrial effective refractory period and wavelength, reduces the dispersion of effective refractory period, and minimally slows conduction velocity in pigs.

Remogliflozin is the active component of the pro-drug remogliflozin etabonate, which is used the treatment of non-alcoholic steatohepatitis ("NASH") and type 2 diabetes. Remogliflozin inhibits the sodium-glucose transport proteins (SGLT), is selective for SGLT2, which is responsible for glucose reabsorption in the kidney. Blocking this transporter causes blood glucose to be eliminated through the urine.

Tecarfarin (also known as ATI-5923), an anticoagulant, is a vitamin K reductase antagonist. Tecarfarin is participating in phase III clinical trials for the treatment of thromboembolism and thrombosis. On March 11, 2019, Espero BioPharma Inc. announced that the U.S. Food and Drug Administration (FDA) has granted Orphan Drug Designation (ODD) for tecarfarin for the prevention of systemic thromboembolism of cardiac origin. Tecarfarin is metabolized by esterases, escaping metabolism by the cytochrome P450 system and thereby avoiding cytochrome P450-mediated drug-drug or drug-food interactions as well as genetic variations found in the cytochrome P450 system.

Clobenzepam (tarpane) is a drug exhibiting antihistaminic properties.

Oxmetidine is an H2-receptor antagonist that was studied as a gastrointestinal agent. Oxmetidine possesses efficacy in the treatment of peptic ulcers. However, information about the further development of this drug is not available.

Indolapril (CI-907) is a new orally active prodrug of nonsulfhydryl angiotensin-converting enzyme (ACE) inhibitor, developed by Warner-Lambert/Parke-Davis Pharmaceutical Research for treating hypertension. Indolapril is epimer of trandolapril, well-known ACE inhibitor currently in the market for hypertension treatment. Indolapril (Monoester form) and it’s active component (diacid form) produced concentration related ACE inhibition in guinea-pig serum (IC50 for monoester -- 0.1 mkM and for diacid -- 2.6 nM). In isolated rabbit aortic rings and in rat and dog autonomic studies, Indolapril is highly specific in suppressing the contractile or pressor responses to angiotensin I. In two-kidney, one-clip Goldblatt hypertensive rats, single daily doses (0.03-30 mg/kg p.o.) produced dose-dependent decreases in blood pressure; 3 mg/kg lowered blood pressure to normotensive levels. In the spontaneously hypertensive rat, subacute administration of Indolapril produced the same decrease in blood pressure as that obtained in the renal hypertensive rat. In diuretic-pretreated renal hypertensive dogs, 10 mg/kg normalized blood pressure. For equivalent drops in blood pressure, heart rate increases were less in Indolapril than in enalapril-treated renal hypertensive dogs. No side effects were observed with CI-907 in any of the conscious animals. The antihypertensive response to Indolapril (0.03-1.0 mg/kg p.o.) was found to correlate with inhibition of vascular tissue ACE, but not plasma or brain ACE in two-kidney, one-clip renal hypertensive rats.

Tinofedrine is a dithienylamine derivative patented by Deutsche Gold- und Silber-Scheideanstalt vorm. Roessler for improvement of cerebral and peripheral blood flow. In anesthetized dogs, Tinofedrine causes a remarkable increase of cardiac output by positive inotropic and chronotropic stimulation of the heart and simultaneous reduction of peripheral vascular resistance. In comparison with typical beta-agonists Tinofedrine at isotropically equieffective doses, has a much weaker effect on the heart rate. In coronary circulation, Tinofedrine causes vasodilation so that in a therapeutic dose range increased workload is equalized by sufficient myocardial supply.

Rosamaricin is a macrolide antibiotic similar to erythromycin. This compound is more effective against Gram-negative bacteria than erythromycin, especially in the prostate where rosamaricin was shown to be more concentrated than erythromycin in dogs. Rosamaricin has antibiotic activity against Neisseria gonorrhoeae, Chlamydia trachomatis, Ureaplasma urealyticum and Mycoplasma hominis. When the drug was compared with penicillin G in the treatment of pneumococcal meningitis in rabbits it was found to be less effective than penicillin G, as measured by bacterial clearance from cerebrospinal fluid and by treatment outcome. No information on the current use of this compound is available.