Detirelix is a synthetic decapeptide containing five D-amino acids. It is a very potent Gonadotropin-releasing hormone (GnHR) antagonist. The acute effects of detirelix were consistent with peripheral vasodilation. Subchronic effects were associated with inhibition of pituitary gonadotropic and gonadal hormone secretion. As long-acting GnRH antagonist detirelix can rapidly suppress gonadotropin secretion, inhibit follicular development, and prevent ovulation. It can be used as luteolytic agent. A projected use is for the treatment of sex hormone-releasing diseases, as part of anticancer hormone therapy of sex-hormone-dependent tumors.

Cutamesine, an agonsit of brain sigma 1 receptors, was developed by Santen Pharmaceutical for the treatment of cognitive diseases. The drug was tested in phase II in patients with major depressive disorders and for recovery of patients with stroke, however its development was terminated for the given conditions. Currently M's science corporation is developing cutamesine for Amyotrophic lateral sclerosis and Retinitis pigmentosa as more suitable target diseases.