Bensuldazic acid was used in veterinary as an antifungal agent.

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.

MK 0777 is a selective GABAA α2/3 receptor partial agonist, for potential use in the treatment of Schizophrenia, Anxiety Disorder, and Generalized Anxiety Disorder. MK-0777 is functionally selective for the α2 and α3 subunits, with virtually no activity for the α1 and α5 subunits. Therefore, MK-0777 cause less sedation, interact less with alcohol, and exhibit less abuse potential and physical dependence than benzodiazepines. Unfortunately, in clinical trials, MK-0777 has little benefit for cognitive impairments in people with schizophrenia and anxiety disorder.

Furacrinic acid (also known as GP 48 674) was studied as a diuretic agent and participated in clinical trials. However, information about the further development of this drug is not available.

Amfonelic acid (AFA) is a dopamine reuptake inhibitor. Experiments on rats have shown that AFA treatment completely prevented the effects of methamphetamine on the dopaminergic system, both morphologically and biochemically.

Iosefamic Acid is triiodoisophthalamic acid derivative patented by Mallinckrodt Chemical Works as x-ray contrast agent for imaging in the biliary and urinary systems and in vasography.

Thyropropic Acid (also known as Triopron) is a hydrocinnamic acid derivative and naturally occurring thyroid analog with antigoitrogenic and anticholesteremic activity. Thyropropic Acid acts as potent antagonist of thyroid hormone receptors and may be useful in the therapy of resistance to thyroid hormone and corticosteroid-induced skin atrophy. In preclinical models, Thyropropic Acid reduced serum cholesterol 27% and liver incorporation of acetate into cholesterol 37% but did not affect liver cholesterol levels.

Iodocetylic Acid I-123 is a radiolabeled derivative of cetylic acid. Iodocetylic Acid I-123 was studied as for in vivo diagnosis of the myocardium.

Hyodeoxycholic acid, also known as HDCA, is a secondary bile acid. Natural 6alpha-hydroxylated bile acids are receptor-specific activators of nuclear liver X receptor alpha (LXRalpha), a nuclear receptor regulating the expression of the cholesterol 7alpha-hydroxylase gene. AHRO-001 (Hyodeoxycholic acid) is in phase I clinical trials for the treatment of atherosclerosis. Through a complex signaling processes utilizing LXR receptors, the compound is designed to increase the efficiency of cholesterol efflux using the HDL cells, which act on all cholesterol in the arterial circulation as well as in the lipid core of plaque deposits in the artery walls. Use of AHRO-001 has shown no adverse effects on morbidity, mortality or toxicity and has been well tolerated at high doses.