GSK-923295 is a small-molecule inhibitor of the mitotic kinesin centromere-associated protein E (CENP-E), and the third novel drug candidate to arise from Cytokinetics' broad strategic alliance with GlaxoSmithKline (GSK). GSK-923295 demonstrated a broad spectrum of activity against a range of human tumor xenografts grown in nude mice, including models of colon, breast, ovarian, lung and other tumors. GSK-923295 is the first drug candidate to enter human clinical trials that specifically targets CENP-E and is currently in Phase I human clinical trials being conducted by GSK. GSK-923295 inhibited release of inorganic phosphate and stabilized CENP-E motor domain interaction with microtubules. Inhibition of CENP-E motor activity in cultured cells and tumor xenografts caused failure of metaphase chromosome alignment and induced mitotic arrest, indicating that tight binding of CENP-E to microtubules is insufficient to satisfy the mitotic checkpoint. Consistent with genetic studies in mice suggesting that decreased CENP-E function can have a tumor-suppressive effect, inhibition of CENP-E induced tumor cell apoptosis and tumor regression.

Lipoprotein lipase (LPL) is a rate-limiting enzyme that hydrolyzes circulating triglyceride-rich lipoproteins such as very low-density lipoproteins and chylomicrons. Otsuka Pharmaceutical Factory, Inc. synthesized the LPL activator NO-1886 (ibrolipim, [4-(4-bromo-2-cyano-phenylcarbamoyl)-benzyl]-phosphonic acid diethyl ester, CAS 133208-93-2). NO-1886 increased LPL mRNA and LPL activity in adipose tissue, myocardium and skeletal muscle, resulting in an elevation of postheparin plasma LPL activity and LPL mass. It was discovered, that this agent has a potentially beneficial for the treatment of hypertriglyceridemia, hypo-HDL cholesterolemia, and protection from atherosclerosis. In addition, this agent may be used in the treatment of obesity and obesity-linked health problems in postmenopausal women.

N-(4-Chloro-3-((3-Methyl-2-Butenyl)Oxy)Phenyl)-2-Methyl-3-Furancarbothioamide (also known as UC-781) is a thiocarboxanilide non-nucleoside reverse transcriptase inhibitor patented by Uniroyal Chemical Company, Inc. for prevention of HIV transmission. UC-781 is a potent inhibitor of reverse transcriptase-dependent pyrophosphorolysis, and purportedly restores the chain-terminating activity of zidovudine (AZT) against AZT-resistant virus. In clinical trials single and 7-day topical rectal exposure of UC-781 was safe with no significant adverse events, no detected UC-781 plasma drug levels, no significant mucosal changes, and high participant acceptability. Ex vivo biopsy infections demonstrated marked suppression of HIV infectibility, identifying a potential early biomarker of efficacy.

Azaprocin is an opioid analgesic that has never been marketed.

Proxifezone is a mixture of phenylbutazone and d-propoxyphene patented by Societe d'Etudes de Recherches et d'Applications Scientifiques et Medicales E.R.A.S.M.E. as an anti-inflammation pharmaceutical composition with potent analgesic activity. Anti-inflammatory effects of Proxifezone associated with Phenylbutazone, that acts as a nonsteroidal anti-inflammatory drug (NSAID). D-propoxyphene acts as an opioid analgesic, that provides strong pain relief.

FENLEUTON is a potent, reversible and selective inhibitor of 5-lipoxygenase with IC50 values ranging from 80 to 1100 nM. It was studied for potential use in veterinary medicine to treat chronic obstructive pulmonary disease in horses.

Trimeperidine (promedol) is the earliest and mostly studied opioid analgesic. Trimeperidine stimulates opioid receptors in the central nervous system. Compared with morphine, it has a weaker and shorter analgesic effect, less affects the respiratory, vomiting and vagal centers, does not cause smooth muscle spasm (except for the myometrium), and has a moderate antispasmodic and hypnotic effect. It is used to treat severe pain syndrome, acute left ventricular failure, pulmonary edema, cardiogenic shock, preparation for surgery, childbirth, high fever, post-transfusion complications, poisoning with atropine, barbiturates, barium, gasoline, boric acid, strong acids, carbon monoxide, turpentine, formalin, formalin. It has several side effects. Administration of this substance is associated with the development of life-threatening conditions accompanied by the suppression of respiration center. Analgesic trimeperidine (promedol) was included into the health care kits by various Ministries of the Russian Federation at different times.

Difebarbamate is a barbituric acid derivative. It is a hypnotic drug. Difebarbamate is a component of Tetrabamate complex, which was introduced for clinical use in the treatment of alcoholism and various types of drug dependence. After oral administration of difebarbamate, the compound was completely metabolized and three metabolic pathways were observed: oxidation of Cl of the n-butyl chain which leads to the oxygen dealkylation; hydrolysis of the carbamoyloxy group; oxidation of the benzene ring in position 4. Tetrabamate can induce hepatotoxicity, probably due to an idiosyncratic metabolic mechanism. Despite restrictions on its indications and treatment duration introduced in 1997, cases of severe liver damage have continued to be notified in France.

Ipenoxazone (NC 1200) is a muscle relaxant that is under investigation (phase II) for the treatment of Alzheimer's Dementia, Cognition Disorders. It acts as an Ionotropic glutamate receptor antagonist.