Cloxotestosterone (17β-chloral hemiacetal testosterone) is a synthetic anabolic-androgenic steroid, discovered by Leo Pharmaceutical. The androgenic activity of cloxotestosterone in the rat tests was three to four times that of testosterone propionate.

Cicortonide is a synthetic cyano-glucocorticoid with anti-inflammatory and antirheumatic, as well as antiallergenic properties.

Duvoglustat, an alkaloid azasugar or iminosugar, is a biologically active natural compound that exists in mulberry leaves and Commelina communis (dayflower) as well as from several bacterial strains such as Bacillus and Streptomyces species. Duvoglustat is an investigational pharmacological chaperone for the treatment of acid α-glucosidase (GAA) deficiency, which leads to the lysosomal storage disorder Pompe disease, which is characterized by progressive accumulation of lysosomal glycogen primarily in heart and skeletal muscles. Duvoglustat possesses antihyperglycemic, anti-obesity, and antiviral features. Most importantly, pre-meal intake of duvoglustat in therapeutic concentration has resulted in the inhibition of postprandial hyperglycemia and hyperinsulinemia. Thus, duvoglustat seems to be a potential treatment for checking or setting back the inception of diabetes. No duvoglustat-related adverse events or drug-related tolerability issues were identified in phase II clinical trial for the treatment of Pompe disease.

Lilopristone (ZK 98.734) has a high affinity for progesterone receptors. The progesterone antagonistic effects of ZK 98.734 could be a result of the decrease in progesterone synthesis by the corpus luteum and/or placenta in addition to the interference with the progesterone binding to its cellular receptors in the target organ. ZK 98.734 has potential for fertility regulation. It is a very potent abortifacient in the common marmosets. Lilopristone could significantly suppress the proliferation of ectopic stromal cells in a time- and dose-dependent manner in vitro. The action mechanisms may be associated with the suppression of expression of NF-kappaB P65 mRNA and NF-kappaB P65.

Vindeburnol, a derivative of the plant alkaloid vincamine that that bears neuroprotective properties. Animal model for Alzheimer's disease has shown that vindeburnol reduced neuroinflammation and amyloid burden. In addition, the treatment with this drug can be of benefit in multiple sclerosis patients.

Cicloxolone is a broad spectrum antiviral agent with a largely non-specific and complex mode of antiviral action. The drug was active during all stages of the virus replication cycle, indicating that it does not operate by the specific inhibition of any single essential virus gene product. The drug reduced the number of vesicular stomatitis virusparticles assembled and released by 100- to 1000-fold. Infectious virus yield was reduced 1000- to 10000-fold, giving a 10-fold or greater increase in the particle/p.f.u. ratio. The reduced number of virus particles produced in the presence of Cicloxolone results from two superimposed effects: suppression of vesicular stomatitis virussecondary transcription and viral protein synthesis, and perturbation of virion assembly.

Betaprodine is an opioid analgesic under international control according to the UN Single Convention 1961. It has been used in obstetrics, as pre-operative medication, for minor surgical procedures.

Ciprostene is a synthetic, chemically stable analog of prostacyclin (PGI2). In animal models, administration of ciprostene resulted in dose-dependent hypotension, tachycardia, and inhibition of ex vivo ADP-induced platelet aggregation. Ciprostene was evaluated in clinical trials in patients with peripheral vascular disease. It was found to reduce restenosis in patients with coronary artery disease undergoing therapeutic percutaneous transluminal coronary angioplasty.

Cloxestradiol is a chlorinated derivative of estradiol, invented by Danish company Leo Pharma AS in 1963. The compound is claimed to have estrogenic activity, as was demonstrated by the extended duration of oestrus caused by the injection of cloxestradiol to castrated female rats.