Nocodazole is an anti-mitotic drug that has long been used as an experimental tool in cell biology. Nocodazole is known to bind with high affinity to tubulin and to inhibit microtubule assembly. The tubulin molecule is a α/β heterodimer; both α and β exist as various isotypes whose distribution and drug-binding properties are significantly different. Nocodazole has the highest affinity for αβIV and the lowest affinity for αβIII. In addition, nocodazole was investigated as an anticancer drug on xenografts model and it was revealed, that nocodazole possessed a high-affinity for the cancer-related kinases ABL, c-KIT, BRAF, and MEK, and inhibited Abl, Abl(E255K) and Abl(T315I).

Diproleandomycin is a semisynthetic antibacterial agent. This antibiotic produced by Streptomyces antibiotocus.

Arofylline, a phosphodiesterase 4 inhibitor, participated in clinical trials phase III to treat patients with chronic obstructive pulmonary disease. Besides, in Spain, this drug participated in clinical trials for patients with asthma.

Sardomozide (previously known as SAM486A or CGP-48664) was developed as an inhibitor of S-adenosyl-methionine-decarboxylase, a key enzyme for polyamine biosynthesis. Sardomozide possessed the broad-spectrum antiproliferative and antitumor activity. The drug participated in a phase II clinical trial as a monotherapy in patients with refractory or relapsed non-Hodgkin's lymphoma. In Phase II clinical trial in patients with metastatic melanoma, the drug didn’t have significant therapeutic potential. The further development of this drug was discontinued.

Enalkiren (A-64662) is a potent, dipeptide renin inhibitor, mimics the transition state of the human renin substrate, angiotensinogen. The results of clinical trials with enalkiren suggest that renin inhibitors may be safe, useful therapeutic agents in the management of hypertension. In addition, it exerts intraocular pressure lowering pressure. Enalkiren development for the treatment of glaucoma, heart failure, hypertension has been discontinued.

Brobactam is a synthetic inhibitor of beta-lactamases produced by both gram-positive and gram-negative bacteria. Brobactam potentiates the antibacterial activity of ampicillin against a wide range of clinically important bacterial strains which produce beta-lactamase. No resistant sub-population was observed amongst the strain s of staphylococci studied, and the development of resistance in vitro was not recorded in individual strains of Staphylococcus aureus and Escherichia coli exposed to subinhibitory concentrations of ampicillin/brobactam. Reduced sensitivity was observed in the case of one strain of M. morganii, which was known to produce an inducible chromosomal cephalosporinase.

Flutiazin was studied as an anti-inflammatory agent to use in veterinary. Information about the current use of this agent is not available.

Burapitant (SSR-240,600) is a drug developed by Sanofi-Aventis which was one of the first compounds developed that acts as a potent and selective antagonist for the NK1 receptor. Burapitant inhibited the binding of radioactive substance P to tachykinin NK1 receptors in human lymphoblastic IM9 cells, human astrocytoma U373MG cells, and human brain cortex. It also showed a subnanomolar affinity for guinea pig NK1 receptors but was less potent on rat and gerbil NK1 receptors. Burapitant inhibited [Sar(9),Met(O2)(11)]substance P-induced inositol monophosphate formation in human astrocytoma U373MG cells. Burapitant (0.1-10 mg/kg i.p. or p.o.) antagonized the excitatory effect of i.c.v. infusion of [Sar(9),Met(O2)(11)]substance P (SP) on the release of acetylcholine in the striatum of anesthetized and awake guinea pigs. This antagonistic action was still observed after repeated administration of Burapitant (5 days, 10 mg/kg p.o., once a day). Burapitant (10 mg/kg i.p.) inhibited the phosphorylation of the cAMP response element-binding protein in various brain regions induced by i.c.v. administration of [Sar9,Met(O2)(11)]SP. While burapitant itself did not proceed beyond early clinical trials and was never developed for clinical use in humans, promising animal results from this and related compounds have led to a number of novel drugs from this class that has now been introduced into medical use.

Talaglumetad (also known as LY-544344) is a bicyclohexane derivative patented by Eli Lilly and Company as modulators of metabotropic glutamate receptor. Talaglumetad acts as a prodrug of Eglumegad, a selective agonist of metabotropic glutamate receptors (mGluR2/3) and metabolized to release active compound by both human jejunal homogenates and rat liver homogenates. In experiments on mice, Talaglumetad was found to be as effective as diazepam for treating anxiety symptoms in several standard tests, but without producing any of the negative side effects of diazepam such as sedation and memory impairment.

Sulfatrozole is a sulfanilamide derivative patented by Oesterreichische Stickstoffwerke A.-G. as an antimicrobial agent with broad-spectrum activity.