Endomide is a central analeptic considered to be an antiparkinsonian agent.

Pilaralisib (XL147, SAR245408) is a potent and highly selective inhibitor of class I phosphatidylinositol 3-kinase (PI3K) (α, β, γ, and δ). In cellular assays, XL147 inhibits the formation of PIP3 in the membrane, and inhibits phosphorylation of AKT, p70S6K, and S6 in multiple tumor cell lines with diverse genetic alterations affecting the PI3K pathway. In a panel of tumor cell lines, XL147 inhibits proliferation with a wide range of potencies, with evidence of an impact of genotype on sensitivity. Repeat-dose administration of XL147 results in significant tumor growth inhibition in multiple human xenograft models in nude mice. Pilaralisib, was being developed by Exelixis and its licensee, Sanofi (formerly sanofi-aventis), for the treatment of solid tumours. However, the product was not listed on Sanofi's early stage pipeline as of end of July 2015 and there have been no recent reports on development identified.

Bentiamine (also known as dibenzoyl thiamine), a derivative of thiamine, is rapidly absorbed and converted to thiamine. Experiments on rodent have shown that this compound had low toxicity and absence of carcinogenicity.

Argimesna (also known as arginine 2-mercaptoethanesulfonate) is a sulfhydryl group-containing molecule, which has no effect on glutathione status or on the total thiol pool, but is an uroprotective agent. Argimesna was investigated for the prevention of haemorrhagic cystitis from ifosfamide (IFO), but these studies were discontinued

Bensuldazic acid was used in veterinary as an antifungal agent.

Guabenxan was developed as an oral antihypertensive drug.

Ecenofloxacin (CFC-222), a fluoroquinolone, is a broad-spectrum antibacterial compound acting as a ype II DNA topoisomerase inhibitor. It exerts antibacterial activities against gram-positive, gram-negative, and anaerobic organisms. Ecenofloxacin development as an antibacterial agent has been discontinued.

Kynurenic acid is a product of the normal metabolism of amino acid L-tryptophan which has been shown to have a neuroactive profile. It exhibits activity against NMDA receptors and Neuronal acetylcholine receptor subunit alpha-7. It has been investigated as a potential therapeutic compound and as a biomarker in a number of neurological disorders. Although Kenyruic acid exhibits a poor penetration of the blood-brain barrier, it remains to be of particular interest to those researching Schizophrenia.