Somantadine, an adamantane derivative, is an antiviral agent. Somantadine was synthesized by Pennwalt and has been undergoing tests for the treatment of herpes virus for nearly five years.

Glunicate (LG 13979) is a long-acting nicotinic acid derivative that can lower plasma triglyceride levels, while leaving other lipoprotein parameters unaffected. It exerts a dose‐dependent reduction of plasma triglycerides and cholesterol. In rabbits, glunicate provided dose-dependent protection of the arterial wall from atheromatous lesions and from cholesterol and collagen accumulation. It has been shown that glunicate has prolonged activity on plasma free fatty acids and triglycerides, with long lasting and intense activity on plasma cholesterol.

Feloprentan is an endothelin receptor antagonist.

Esorubicin (4'-deoxydoxorubicin, NSC 267469) is a synthetic derivative of the anthracycline antineoplastic antibiotic doxorubicin with potential antineoplastic activity. Esorubicin intercalates into DNA and inhibits topoisomerase II, thereby inhibiting DNA replication and ultimately, interfering with RNA and protein synthesis. This agent exhibits less cardiotoxicity than the parent antibiotic doxorubicin, but may cause more severe myelosupression compared to other compounds within the anthracycline class. Esorubicin was being clinically tested for the treatment of solid tumors as well as lymphomas an leukemias. Esorubicin development has been discontinued.

Betamethadol or β-methadol is an opioid analgesic under international control according to the UN Single Convention 1961. Betamethadol is an isomer of the racemic mixture of dimepheptanol.

Bolazine is a synthetic anabolic steroid that uses as the ester prodrug bolazine capronate.

Arbaclofen (STX209, R-baclofen), a selective agonist of GABA-B receptors, has been investigated in clinical trials for the treatment of autism spectrum disorder ASD, phase II and for the treatment of patients with fragile X syndrome in phase III. As a result, the drug did not meet the primary outcome of improved social avoidance in FXS in either study. In spite of positive results in some children with ASD, further study will be needed to replicate and extend these initial findings. Arbaclofen has also been investigated in phase III clinical trials as a treatment for spasticity due to multiple sclerosis.

Clibucaine is a piperidine derivative possessing local anesthetic properties and used in the clinic as a local anesthetic in the 1980s.

Sinefungin, a natural nucleoside isolated from cultures of Streptomyces incarnatus and S. griseolus, is structurally related to S-adenosylhomocysteine and S-adenosylmethionine. Sinefungin is a DNA methyltransferase (DNMT) inhibitor (IC₅₀ = 0.1 - 20 uM). Sinefungin has been shown to inhibit the development of various fungi and viruses, but its major attraction to date resides in its potent antiparasitic activity. This compound has been reported to display antiparasitic activity against malarial, trypanosomal, and leishmanial species. Sinefungin inhibits pneumococcal biofilm growth in vitro and colonization in vivo, decreases AI-2 production, and downregulates luxS, pfs, and speE gene expressions. Sinefungin was significantly suppressive against both L. donovani and L. braziliensis panamensis infections in hamsters when compared with meglumine antimonate. An immunosuppressed rat model was used to investigate the anti-Cryptosporidium parvum activity of sinefungin. In infected animals, oral sinefungin therapy resulted in a dose-related suppression of oocyst shedding, which correlated with oocyst disappearance from ileal sections. When administered prior to or on the day of oocyst challenge, sinefungin successfully prevented infection. These data suggest that sinefungin could be considered as a candidate molecule in the treatment of human cryptosporidiosis, considered to be the most significant enteric opportunistic infection in AIDS.

Norvinisterone (Nor-Progestelea) is a progestin and androgen/anabolic steroid (AAS) drug. It appeared to be quite androgenic. It was used in Europe but is no longer marketed.