LY-156735 (TIK-301) is a melatonergic agonist and serotonergic antagonist drug. In May 2004 the FDA granted orphan drug designation to TIK-301 for the treatment of circadian sleep disorders in totally blind individuals as well as in individuals with tardive dyskinesia. Theoretically, it has an antidepressant effect.

Echinocandin B is a naturally occurring antibiotic, isolated from Aspergillus nidulans. It acts as an inhibitor of fungal β-1,3-glucan synthase thereby disrupting the formation of the fungal cell wall. The drug itself was not developed in the clinic, but instead, it was used in the production of other echinocandin derivatives.

Solamargine is the one of major compounds of Solanum lycocarpum- fruit glycoalkaloid extract, and a major steroidal alkaloid glycoside, which is purified from Solanum nigrum L (SNL), a traditional Chinese medicinal herb. It has been shown that solamargine has anti-tumor activity against the several types of cancers. Also as a part of SR-T100 Gel solamargine in the phase II of clinical trial for the treatment of Actinic Keratosis and Bowen's Disease. The precise mechanism of its actions is still undefined, but existed several potential pathways. In case of castration-resistant prostate cancer cells, solamargine inhibits the growth cells through AMPKalpha-mediated inhibition of p65, followed by reduction of MUC1 expression in vitro and in vivo. In case of lung cancer cells solamargine inhibits the growth cells through reduction of EP4 protein expression, followed by increasing ERK1/2 phosphorylation. The inter-correlations between EP4, DNA methyltransferase 1 (DNMT1) and c-Jun and feedback regulation of ERK1/2 by c-Jun contribute to the overall responses of solamargine in this process.

7β-hydroxycholesteryl-3-oleate has been shown to inhibit astrogliosis and intracranial glioblastoma growth. Local administration of 7β-hydroxycholesteryl-3-oleate inhibits growth of experimental rat C6 glioblastoma. These data suggest that 7β-hydroxycholesteryl-3-oleate might be useful for local glioblastoma chemotherapy. 7β-hydroxycholesteryl-3-oleate is a potent inhibitor of the endogenous cholesterol biosynthesis in brain showing a correlation between cholesterogenesis and reactive astrocyte proliferation. 7β-hydroxycholesteryl-3-oleate can reduce the astrocytic reaction following spinal cord injury, promoting the serotonergic reinnervation of a denervated territory. On 17 December 2010, orphan designation (EU/3/10/816) was granted by the European Commission to Intsel Chimos SA, France, for 7-beta-hydroxy cholesteryl-3-beta-oleate for the treatment of glioma. The substance is going to be injected directly into the brain tumour contained within liposomes, which are expected to carry the medicine into the glioma cells.

Ribavirin elaidate (CP-4033; TRX-201), a Lipid Vector Technology derivative of ribavirin. It inhibits elongation factor F4E (elF4E), which stimulates cell growth. Translational Therapeutics Inc. received orphan drug status from the U.S. Food and Drug Administration (FDA) in 2011 for ribavirin elaidate in the treatment of aggressive follicular, medullary and anaplastic thyroid carcinoma.

GUANOSINE 5'-DIPHOSPHO-β-L-FUCOSE is classified as a member of the Purine nucleotide sugars. Guanosine 5'-diphospho-β-L-fucose sodium salt sodium salt is a substrate for fucosyltransferase.

Bromopyruvate is an halogenated analogue of pyruvic acid known as an alkylating agent reacting with thiol groups of many proteins. Bromopyruvate exerts anticancer action. It is based on the impairment of energy metabolism of tumor cells by inhibiting enzymes in the glycolysis pathway (hexokinase II, glyceraldehyde 3-phosphate dehydrogenase, phosphoglycerate kinase) and the oxidative phosphorylation (succinate dehydrogenase). Bromopyruvate induces endoplasmic reticulum stress, inhibits global protein synthesis further contributing to cancer cell death. Treatment with bromopyruvate has been administered in several cancer type models both in vitro and in vivo, either alone or in combination with other anticancer therapeutic approaches. These studies clearly demonstrate bromopyruvate broad action against multiple cancer types. This compound has also antifungal and antiparasitic activity.

5,6-dihydro-5-azacytidine (DHAC) is a hydrolytically stable congener of 5-azacytidine. It exerts cytostatic action in vitro. DHAC induces DNA hypomethylation. DHAC inhibits DNA methyltransferase, thereby interfering with abnormal DNA methylation patterns that are associated with genetic instability in some tumor cells. Inhibition of this enzyme may restore expression of tumor-suppressor genes and result in antitumor activity. It was in phase II studies for the treatment of several cancers such as malignant melanoma, mesothelioma and others.