Osmadizone was investigated as a uricosuric agent. Information about the current use of this compound is not available.

Ragaglitazar (DRF 2725, NNC 61-0029) is phenoxazine analog of phenyl propanoic acid having dual (PPARα and PPARγ) agonist property intended to restore insulin sensitivity and correct diabetic dyslipidemia. PPAR-α is highly expressed in liver and muscle and upon activation leads to decreases in plasma triglycerides and increases in HDL cholesterol levels. PPAR-γ activation leads to enhancement of glucose uptake in skeletal muscles and adipose tissue. Ragaglitazar provided the glycemic control that was comparable with that of pioglitazone and, compared with placebo, provided a significant improvement in the lipid profile.

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

Salirasib or S-trans,trans-Farnesylthiosalicylic acid (FTS) is a salicylic acid derivative with potential antineoplastic activity. It acts as a potent competitive inhibitor of the enzyme prenylated protein methyltransferase (PPMTase), which methylates the carboxyl-terminal S-prenylcysteine in a large number of prenylated proteins including Ras. In such systems, Salirasib inhibits Ras methylation but not Ras farnesylation. Salirasib selectively disrupts the association of chronically active Ras proteins with the plasma membrane. Salirasib competes with Ras for binding to Ras-escort proteins, which possess putative farnesyl-binding domains and interact only with the activated form of Ras proteins, thereby promoting Ras nanoclusterization in the plasma membrane and robust signals. Salirasib was studied in the clinical trials in patients with solid tumors, however its development was discontinued.

Butafosfan is a phosphororganic supplement that is given, most commonly with cyanocobalamin, to cattle, swine, horses, and poultry for the prevention or treatment of phosphorus deficiencies. Butafosfan also plays a vital role in hepatic carbohydrate metabolism. In addition, butafosfan has been regarded as an antistress agent in combination with vitamin B12. Studies with butafosfan in different animals have shown that it improved general health status by stimulating feed intake, immune system, and digestive function. Butafosfan has been reported for the treatment of metabolic disorders caused by stress or nutrition problems in various species.

Etibendazole (R34803 or methyl [5-(2-(4-fluorophenyl)-1,3-dioxolan-2-yl)-1H-benzimidazole-2-yl] carbamate), a benzimidazole derivative, is a microtubule inhibitor. Etibendazole exerts antihelmintic activity.

Varespladib (LY315920; A-001) is a potent and selective inhibitor of IIa, V, and X isoforms of human non-pancreatic secretory phospholipase A2 with nM IC50. The molecule acts as an anti-inflammatory agent by disrupting the first step of the arachidonic acid pathway of inflammation. Varespladib methyl is being developed by Anthera Pharmaceuticals Inc for the potential treatment of coronary artery disease, acute coronary syndrome and inflammation. Varespladib methyl is a prodrug that is rapidly metabolized to varespladib, and both compounds are able to potently inhibit the enzymes of the human secretory phospholipase groups. Phase II clinical trials of varespladib methyl in patients with coronary artery disease, rheumatoid arthritis, asthma and ulcerative colitis revealed that the drug was well tolerated. Varespladib methyl did not demonstrate a good efficacy profile in patients with rheumatoid arthritis, asthma and ulcerative colitis; whereas in patients with coronary artery disease, varespladib methyl consistently reduced LDL-cholesterol levels, (elevated LDL-cholesterol levels are a marker of increased cardiovascular risk). Varespladib methyl could represent a novel therapy for the treatment of cardiovascular disease, although the efficacy, safety profile and advantages of this drug compared with existing therapeutic options would need to be established in upcoming phase III trials.

E7107 is a semisynthetic derivative of the natural product pladienolide B which was originally isolated from Streptomyces platensis. E7107 is the first compound a new class of anti-cancer agents targeting the spliceosome. Specifically E7107 interacts with the Splicing factor 3B subunit 1 (SF3b1) to block the normal splicing of oncogenes. Development of E7107 was suspended after Phase I clinical trials due to an unacceptable profile of adverse events.

Iodofiltic Acid I-123 is a single-photon branching free fatty acid radiopharmaceutical with potential application in single-photon emission computed tomography (SPECT). Assessment of fatty acid metabolism by radionuclide techniques has a potential role for the early detection of myocardial ischaemia and the assessment of the severity of ischaemic heart disease. The Iodofiltic Acid I-123 scan is preferable because it can provide suitable information for risk stratification just after an acute myocardial infarction (AMI) without requiring the patient to exercise; it can also detect previous ischaemic insult even after recovery of myocardial perfusion, the so- called "ischaemic memory".