LY2300559 is a dual metabotropic glutamate receptor 2 (mGluR2) positive allosteric modulator and cysteinyl leukotriene receptor 1 (CysLTR1) antagonist. Eli Lilly was developing LY2300559 for the prevention of migraine. LY2300559 development has been discontinued.

Otenzepad is the first competitive muscarinic M2 antagonist that is cardioselective and had been in phase III clinical trials for the treatment of arrhythmias and bradycardia. Otenzepad was originally developed by Boehringer Ingelheim Pharma KG (Boehringer Ingelheim) in Germany. The parent company is developing oral and IV formulations of the drug for use in symptomatic bradycardia, sinus bradycardia, sick sinus syndrome and symptomatic arrhythmias after intoxication. However, all these research has been discontinued. Otenzepad binds to muscarinic cholinergic receptors in a simple competitive manner. Its affinity for cardiac (M2) muscarinic receptors is about 7 times greater than for ganglionic (M1) receptors and about 36 times greater than for glandular (M3) receptors. The (+)-enantiomer of otenzepad is about 8 times more potent at M2-receptors than the (−)-enantiomer. In a double-blind study, 48 healthy male volunteers were randomised to single oral doses of placebo or otenzepad (120, 240 or 480mg). Heart-rate (HR) was significantly increased by the 250 and 480mg doses (by 15 and 21 beats/minute, respectively). The 480mg dose also increased Diastolic Blood Pressure (DBP) significantly compared with placebo. The oral pharmacokinetics of otenzepad were investigated in a double-blind study in which 48 healthy male volunteers were randomised to single oral doses of placebo or otenzepad (120, 240 or 480mg). Otenzepad bioavailability was 45%, mean residence time (MRT) was 12.5 hours and tmax occurred 2.5 hours postdose.

FLOTEGATIDE F-18, a radiolabelled tripeptide with arginine-glycine-aspartic acid (R-G-D) motif, is a positron emission tomography (PET) tracer targeting integrin alpha-V/beta-3. It was under development as a diagnostic agent for cancer and atherosclerosis.

Avasimibe (CI 1011) is a potent ACAT (Acyl-CoA:cholesterol acyltransferase) inhibitor. Avasimibe inhibits both ACAT1 and ACAT2 isoforms. Avasimibe was in development by Parke-Davis (now Pfizer) in the US for the treatment of atherosclerosis and hyperlipidaemia. Avasimibe was in phase III studies and more than 1300 patients had been treated for up to one year, however, in October 2003, Pfizer announced that development had been discontinued.

TAK-448 is an investigational oligopeptide analog of kisspeptin and a potent agonist of the GPR54 receptor. In animals, acute TAK-448 administration stimulates luteinizing hormone (LH)/follicle-stimulating hormone release, whereas continuous subcutaneous exposure rapidly down-regulates the pituitary-gonadal axis, with rapid reduction of testosterone levels in a dose-dependent manner. TAK-448 has exhibited potent antitumor activity in rat androgen-dependent prostate cancer models. In accordance with the T reductions, TAK-448 treatment showed also more rapid reduction in plasma prostate-specific antigen(PSA) levels. TAK-448 had been in phase II clinical trials for the treatment of prostate cancer. However, this research has been discontinued.

Caffeine N-Acetyl-L-Tryptophan is Caffeine salt which can be used as a stimulant for the nervous system and as a vasodilator.