Ciprokinen is a renin inhibitor discovered by Roche. Ciprokinen inhibited human renin in a buffer and human plasma with an IC50 of 0.07 and 0.65 nmol/L, respectively. In animal models, acute and chronic administration of ciprokinen lead to a reduction in arterial blood pressure. Development of ciprokinen was discontinued at a preclinical stage.

Idoxifene (also known as CB 7432), a novel selective estrogen receptor modulator, is originally discovered at the CRC Centre for Cancer Therapeutics, Institute. This drug participated in clinical trials phase II in patients with locally advanced/metastatic breast cancer resistant to tamoxifen. In addition, in phase III in postmenopausal women after one year of idoxifene treatment. However, both studies were discontinued because of insufficient effectiveness.

Rifalazil (also known as KRM-1648) is a derivative of the antibiotic rifamycin. This orally administered ansamycin is under evaluation for treatment of various bacterial infections. Rifalazil kills bacterial cells by blocking off the β-subunit in RNA polymerase. This drug was originally developed as a therapeutic agent to replace rifampin in the treatment of tuberculosis. It also showed potential to treat indications caused by chlamydia trachomatis and chlamydia pneumoniae. Furthermore, it has been suggested as a potential drug in the treatment of gastric ulcer disease (which is caused by Helicobacter pylori) and antibiotic-associated colitis. Phase II studies evaluated the efficacy and safety of this drug in patients with chlamydia trachomatis and chlamydia seropositive patients. A phase 3 study was initiated including chlamydia seropositive patients. However, the development of rifalazil was terminated in 2013 due to severe side effects.

Mibolerone is a synthetic anabolic steroid. It binds both androgen and progesterone receptors and exerts both androgenic and progestagenic actions. Mibolerone (CHEQUE® Drops) was used in veterinary for estrous (heat) prevention in adult female dogs not intended primarily for breeding purposes. No prescription preparation, human or veterinary, is currently known to contain mibolerone worldwide.

Cinoxolone is a derivative of glycyrrhetinic acid. Is is claimed to possess antiulcer properties.

Amicycline is an anti-bacterial agent, an antibiotic of tetracycline class.

Reparixin is a CXC chemokine receptor type 1 (CXCR1) and type 2 (CXCR2) inhibitor. This compound has potential antineoplastic activity. It can be administered orally, binds to CXCR1 (overexpressed on cancer stem cells) and prevents its activation by its ligand interleukin 8. This might result in the death of cancer cells and inhibition of cell progression and metastasis. Reparixin also inhibits CXCR2 activation, possibly reducing both neutrophil recruitment and vascular permeability during inflammation or injury. A phase II clinical trial evaluating the effects of orally administered reparixin on cancer stem cells in the primary tumor and the tumoral microenvironment in an early breast cancer population was terminated. Reparixin has also been suggested as a novel potential therapeutic strategy for aggressive forms of thyroid cancer, based on results of a xenotransplantation study in mice.

AZD-3293 camsylate wider known as Lanabecestat camsylate, a salt of Lanabecestat, a drug that was invented for the treatment of Alzheimer's disease. Lanabecestat inhibits beta-secretase 1 cleaving enzyme (BACE1) thus preventing the buildup of beta-amyloid and help stop the progression of Alzheimer's disease. The drug was in phase III clinical trials, but studies were discontinued because of recommendations by an independent data monitoring committee (IDMC). IDMC concluded that all trials, in early Alzheimer’s disease, and in mild Alzheimer’s disease dementia, were not likely to meet their primary endpoints upon completion and therefore should be stopped for futility.

Lombazole is an antimicrobial agent of the imidazole class. It induced profound ultrastructural changes in Staphylococcus epidermidis and Candida albicans. Like other members of the imidazole series, such as clotrimazole, miconazole, and bifonazole, the compound has a broad spectrum of activity. It is active against several budding and filamentous fungi as well as gram-positive bacteria. Lombazole most probably interferes with fungal lipid synthesis by inhibiting sterol C-14 demethylation. Lipid biosynthesis is the primary site of action of lombazole in the bacterium Staphylococcus epidermidis. Lombazole was recommended against akne.

Coumermycin is from the aminocoumarin class of antibiotic compounds which acts by inhibiting DNA gyrase. Coumermycin is effective against gram-positive bacteria, but not gram-negative bacteria. Coumermycin its derivatives have been studied since the 1950's as potential antibiotic. However, it has seen little to no clinical development because of its low water solubility, toxicity profile, and ineffectiveness against gram-negative bacteria.