2-Cyano-3,12-dioxooleana-1,9-diene-28-oic acid (CDDO, also known as Bardoxolone) is a synthetic triterpenoid that displays potent anti-inflammatory and antitumorigenic activities. CDDO was in the clinical trial phase I for the treatment patients with Solid tumors and leukemia, but that studies were discontinued. It is known, that CDDO blocks the cellular synthesis of inducible nitric oxide synthase and inducible COX-2. In addition, was discovered, that CDDO disrupted intracellular redox balance and thereby induce apoptosis. Moreover, CDDO is a ligand for peroxisome proliferator-activated receptor that it induces genes regulated by Nrf2, including heme oxygenase-1 and eotaxin-1, which play a role in antioxidant response element signaling activity.

Norpipanone (Orfenso; Hexalgon) is an opioid analgesic. It is a controlled substance (opiate).

Diproqualone was used primarily for the treatment of inflammatory pain associated with osteoarthritis. The analgesic activity of diproqualoneis synergistic with that of noramidopyrine. It also display anti-inflammatory action in the rat, inhibiting plantar edema with dextran or serotonin, atopic edema from ovalbumin, etc. It has spasmolytic, anticholinergic and antihistaminic action in higher doses. It is not hypnotic and has no anticonvulsant effects. The therapeutic symptoms for diproqualone are all types of pain: postoperative, posttraumatic, dental, neuritis, anti-inflammatory arthritis, etc.

Diprofene is a myotropic antispasmodic with pronounced vasodilating effect. It has minor anticholinergic and local anesthetic properties. Antispasmodic action develops gradually. Diprofene is indicated for the treatment of peripheral vasospasms (obliterating endarteritis, Raynaud's disease, etc.) and spasm of smooth muscles of internal organs (gastric colic, intestinal colic, renal colic, biliary colic). Adverse effects are: dizziness, headache, nausea, numbness of the oral mucosa.

Neocinchophen is an analgesic and uricosuric. Cinchophen and neocinchophen (introduced by Chemische Fabrik auf Aktien as Atophan and Novatophan) were being advertised as superior substitutes for salicylates in the treatment of rheumatic fever. Chemically, cinchophen is phenylcinchoninic acid, and neocinchophen is the ethyl ester of its methyl derivative.

Colfenamate is an antypyretic and antiinflammatory compound developed by the German company Tropon, GmbH.

Clofurac is an anti-inflammatory compound synthesized by Sandoz in the 1980s. In animal models, clofurac inhibited the acute inflammation induced by carrageenin, was more effective in adjuvant-induced arthritis than diclofenac, and inhibited PGE2 and PGF2a synthesis in vitro. The compound was found to be strongly ulcerogenic in the rat.

Clobuzarit (Clozic) is a compound originally developed for the treatment of atherosclerosis. It was later found to possess antirheumatic and weak anti-inflammatory properties and was evaluated as a disease-modifying antirheumatic drug. Adverse side effects observed in clinical trials have forced the withdrawal of clobuzarit from further consideration.

Cliprofen is a non-steroidal anti-inflammatory drug.