Cyclobutoic acid is a synthetic analog of mevalonic acid, developed by the Italian company Farmitalia Carlo Erba SPA. The compound inhibited the incorporation of [14C] into CO2, fatty acids and cholesterol, and was used for the treatment of hepatic deficiency.

Sulfaloxic acid is a benzamide derivative patented by Chemische Fabrik von Heyden A.-G. as an antibacterial agent.

Tiomolibdic acid salt, Bis-choline tetrathiomolybdate (ATN-224, WTX-101), is under investigation as a therapy against different cancers and Wilson’s disease (WD). ATN-224 is a second-generation analog of ammonium tetrathiomolybdate. ATN-224 is a novel copper chelator. ATN-224 inhibits CuZn superoxide dismutase 1 (SOD1) leading to antiangiogenic and antitumor effects. Strategically tailoring combination regimens that include ATN-224 and target ROS may be a viable approach to advance the treatment of melanoma. ATN-224 is in phase III clinical trial for the treatment of Hepatolenticular degeneration. WTX-101 is in phase II clinical trials for the treatment of Wilson's disease. Once daily WTX-101 treatment over 24 weeks improved neurologic disease, hepatic status and copper control in newly diagnosed WD patients. WTX-101 appears well tolerated. Drug-induced, paradoxical, neurological deterioration was not observed. This compound has received orphan drug designation in both the United States and the European Union. WTX-101 was originally discovered by University of Michigan and now is being developed by Wilson Therapeutics by acquisition.

Ursulcholic acid is a soluble form of ursodeoxycholic acid. It is an anticholinergic agent.

Olpadronate, a nitrogenated bisphosphonate that can inhibit bone resorption. Although it shares the therapeutic and pharmacological properties of pamidronate and alendronate, it has a greater dosage amplitude, more predictable effects, and greater digestive tolerability than other bisphosphates. Clinical trials have shown that the oral olpadronate was well tolerated and effective in the treatment of Paget's disease. In addition, the drug is ongoing in phase II clinical trials in the Netherlands. This clinical trial has to assess the efficacy of the intravenous drug in decreasing the average back pain intensity from baseline.

Trethocanic acid is a beta-hydroxy acid. It exerts a similar effect on the skin as salicylic acid. Trethocanic acid was used as antihypercholesterolaemic agent.

Nafcaproic acid (DA-808) is a synthetic choleretic agent.