Clonitazene is a synthetic opioid analgesic, structurally related to etonitazene. In the USA clonitazene is a schedule I narcotic controlled substance.

Piclozotan (SUN N4057) is a 1,4-benzoxazepine derivative that exhibits sub-nanomolar affinity at serotonin 1A receptor with good selectivity over dopamine D2 and α1-adrenoceptors. Piclozotan reduced levodopa-induced forelimb hyperkinesia by 55% and 69%, respectively, at 1h relative to the control. Piclozotan significantly lengthened the duration of rotational behavior by 26% versus the control and attenuated the increase in striatal levodopa-derived extracellular dopamine levels. Piclozotan, a serotonin 1A agonist, can improve motor complications in patients with advanced Parkinson's disease. Piclozotan has been shown to be neuroprotective against ischemic neuronal damage in animal models. Piclozotan had been in phase II for the treatment of stroke. However, this research has been discontinued.

Dichloroxylenol is a bactericide, preservative and deodorant. It is often used in the preparation of antiseptic and deodorant lotions and bath preparations. Dichloroxylenol also showed slightly greater activity against S. aureus Oxoid 701/1 Lot 610254 than against Escherichia coli and Salmonella typhi, indicating a probable role for cell wall in the susceptibility of bacteria to dichloroxylenol. The efficacy of either povidone-iodine (Betadine) or dichloroxylenol (Septocid) intrauterine infusions on the treatment of endometritis and/or cervicitis in cows was examined. The recovery and conception rates obtained after Betadine treatment were better than those obtained after Septocid. Moreover, healthy cows and those inseminated before post-partum day 180, having no more than 4-7 previous services, responded well to either Betadine or Septocid treatment.

Peretinoin is an orally available, acyclic retinoid with potential antineoplastic and chemopreventive activities. Peretinoin binds to and activates nuclear retinoic acid receptors (RAR), which in turn recruit coactivator proteins and promote, with other transcriptional complexes, the transcription of target genes. As a result, this agent may modulate the expression of genes involved in the regulation of cell proliferation, cell differentiation, and apoptosis of both normal and tumor cells. Peretinoin inhibits post-therapeutic recurrence of hepatocellular carcinoma via unclear mechanisms. The European Commission granted Orphan Drug designation for Kowa's peretinoin to treat hepatocellular carcinoma (HCC).

Trodusquemine (MSI-1436) is a "first-in-class" highly selective non-competitive, allosteric inhibitor of PTP1B that can cross the blood-brain barrier to suppress feeding and promote insulin sensitivity and glycemic control. Trodusquemine is a naturally occurring cholestane that can be purified from the liver of the dogfish shark, Squalus acanthias, but it can also be manufactured synthetically by a fairly laborious process that requires several weeks. Trodusquemine has potential hypoglycemic, anti-diabetic, anti-obesity, and antineoplastic activities. Upon administration, trodusquemine selectively targets and inhibits PTP1B, thereby preventing PTP1B-mediated signaling. This prevents the dephosphorylation of the insulin receptor, which improves insulin signaling and insulin sensitivity, and decreases blood glucose levels. In susceptible cancer cells, inhibition of PTP1B causes a reduction of tumor cell proliferation.

MK-0686 is a bradykinin B1 receptor antagonist patented by American multinational pharmaceutical company Merck & Co for the treatment of neuropathic pain and inflammation. MK-0686 demonstrates significantly reduced susceptibility to human P-gp mediated efflux and shows good potential for human CNS penetration based on brain levels in CF-1 mice and monkeys. Additionally, MK-0686 also exhibited good CNS bradykinin B1 receptor occupancy in the transgenic rat expressing the human B1 receptor and showed oral efficacy in reducing CFA-induced hyperalgesia in a humanized mouse. Unfortunately, in phase II clinical trials MK-0686 failed to demonstrate efficacy in phase II clinical trials.

Telinavir (previously known as SC-52151) was developed as an anti-HIV aspartyl protease inhibitor for the treatment of HIV Infections. Telinavir participated in Phase I/II clinical study. In spite of the drug was well tolerated no antiviral activity was produced and further development of the drug was discontinued.