Arhalofenate is a uricosuric drug which lowers serum urate by blocking its reabsorption by the proximal tubules of the kidney. Arhalofenate activity is mediated by inhibition of URAT1, OAT4 and OAT10. Additionally, arhalofenate has been suggested to exert potent anti-inflammatory activity. Arhalofenate has completed Phase 2 and is ready to advance to Phase 3 as a novel potential treatment for gout. The drug was also tested in patients with type 2 diabetes mellitus (phase III study), where it demonstrated its ability to lower glucose level, acting as a selective, partial PPAR-gamma agonist. However, the development of arhalofenate as an anti-diabetic drug was terminated.

Dacuronium is an aminosteroid, acting as a competitive antagonist of nicotinic acetylcholine receptors. In animals, dacuronium worked as a short-acting muscle relaxant with a rapid onset of action. In a clinical trial, dacuronium was markedly less potent than tubocurarine and did not show a rapid recovery from its action.

Semparatide (previously known as RS-66271) was developed as an analog of parathyroid hormone-related protein (PTHrP) with shortening the time for fracture healing. Experiments on animals have shown that this compound was an effective therapy for preventing impaired bone healing caused by prednisone. Clinical trials with postmenopausal osteoporotic women have revealed that semparatide cause sustained increases in the spine. However, further, development appears to have been discontinued by Roche.