Fomidacillin (also known as BRL 36650) is a type of penicillin with antibacterial activity. Studies on volunteers have shown that the drug possessed the bactericidal activity and could be a candidate for the treatment of gram-negative bacillary infections. However, information about the further development of this drug is not available.

Prinomastat is a synthetic hydroxamic acid derivative with potential antineoplastic activity. Prinomastat inhibits matrix metalloproteinases (MMPs) (specifically, MMP-2, 9, 13, and 14), thereby inducing extracellular matrix degradation, and inhibiting angiogenesis, tumor growth and invasion, and metastasis. As a lipophilic agent, prinomastat crosses the blood-brain barrier. Pfizer conducted multicenter, randomized, double-bind, placebo-controlled trials to evaluate the safety and efficacy of prinomastat in combination with standard chemotherapy in patients with advanced hormone refractory prostate cancer and non-small cell lung cancer. However, this study has been terminated for the reason that Prinomastat did not improve the outcome of chemotherapy in non-small cell Lung cancer patients.

Mesudipine, a dihydropyridine analog, is a calcium antagonistic drug (slow channel blocker). It blocks electrical activity in smooth muscle cells and Purkinje fibers.

Gemcabene calcium (PD 72953), the monocalcium salt of a dialkyl ether dicarboxylic acid, is a lipid-regulating compound that was first described in 1998. It down-regulates apolipoprotein C-III expression, enhancing the clearance of very low density lipoprotein (LDL), and reduces plasma triglycerides. It also raises high-density lipoprotein cholesterol (HDL). Unlike fibrates (blood trygliceride level lowering drugs), its mechanism of action is not linked to agonist or antagonist activity on PPAR-α receptors. There is limited information on the exact mechanism of action, but an anti-inflammatory profile was found, associated with a lowered expression of the high-sensitivity C-reactive protein gene regulating mechanisms. Gemcabene (administered as 6, 6’-oxybis [2, 2-dimethyl-4-hexanoic acid] monocalcium salt) has been investigated for treatment in a wide range of hyperlipidaemias, as well as atherosclerosis, and cardiovascular disorders. Gemcabene is generally well tolerated. One phase 2 study testing the preliminary efficacy and safety of gemcabene in children with established nonalcoholic fatty liver disease has been stopped early due to increasing weight and a rise in liver fat content in patients. Clinical trials are still ongoing.

Perbufylline is a bronchodilator. It is N-methylated xanthine derivative. Perbufylline acts as a competitive antagonist at 5-HT2 and alpha1-adrenoceptors, with at least 100-fold less activity at alpha2-adrenoceptors.

Edonentan (BMS 207940) is a highly selective biphenylsulfonamide endothelin A receptor antagonist. (11)C- and (18)F-labeled analogs of edonentan were evaluated of novel PET radioligands for imaging the endothelin-A receptor. Edonentan was in clinical trials for the treatment of heart failure however its development has been discontinued.

Evacetrapib (LY2484595) is a novel benzazepine-based CETP inhibitor that has been developed at Lilly Research Laboratories. Evacetrapib inhibits CETP with IC50 of 5.5 nM, elevates HDL cholesterol without increases in aldosterone or blood pressure. Phase 3. On 01 Sep 2016 Eli Lilly terminates the phase III ACCENTUATE trial in Hyperlipidaemia (Adjunctive treatment) in USA and Puerto Rico (PO) due to insufficient efficacy (NCT02227784).

Morazone is is a nonsteroidal anti-inflammatory drug (NSAID), originally developed by the German pharmaceutical company Ravensberg in the 1950s. Morazone was used as a moderately strong analgesic but was discontinued due to high abuse potential