Tenidap was a

COX Cox or COX may refer to: Companies * Cox Enterprises, a media and communications company ** Cox Communications, cable provider ** Cox Media Group, a company that owns television and radio stations ** Cox Automotive, an Atlanta-based busines ...

5-LOX Arachidonate 5-lipoxygenase, also known as ALOX5, 5-lipoxygenase, 5-LOX, or 5-LO, is a non-heme iron-containing enzyme (EC 1.13.11.34) that in humans is encoded by the ''ALOX5'' gene. Arachidonate 5-lipoxygenase is a member of the lipoxygenase fa ...

inhibitor and

cytokine Cytokines () are a broad and loose category of small proteins (~5–25 kDa) important in cell signaling. Cytokines are produced by a broad range of cells, including immune cells like macrophages, B cell, B lymphocytes, T cell, T lymphocytes ...

-modulating

anti-inflammatory Anti-inflammatory is the property of a substance or treatment that reduces inflammation, fever or swelling. Anti-inflammatory drugs, also called anti-inflammatories, make up about half of analgesics. These drugs reduce pain by inhibiting mechan ...

drug candidate that was under development by Pfizer as a promising potential treatment for

rheumatoid arthritis Rheumatoid arthritis (RA) is a long-term autoimmune disorder that primarily affects synovial joint, joints. It typically results in warm, swollen, and painful joints. Pain and stiffness often worsen following rest. Most commonly, the wrist and h ...

, but Pfizer halted development after marketing approval was rejected by the FDA in 1996Pfizer. Sept 27, 199
Press release: Pfizer To Halt Plans For Commercialization Of Tenidap For Rheumatoid Arthritis
due to liver and kidney toxicity, which was attributed to metabolites of the drug with a

thiophene Thiophene is a heterocyclic compound with the formula C4H4S. Consisting of a planar five-membered ring, it is aromatic as indicated by its extensive substitution reactions. It is a colorless liquid with a benzene-like odor. In most of its reacti ...

moiety that caused oxidative damage.

References

Indoles Thiophenes Ureas Nonsteroidal anti-inflammatory drugs Chloroarenes Aromatic ketones Hydroxyarenes Carboxamides Abandoned drugs Drugs developed by Pfizer {{musculoskeletal-drug-stub