<unk>  (INN and USAN; also known as AC-820, TRK-820; trade name Remitch) is a κ-opioid receptor agonist marketed as a treatment for uremic pruritus in people undergoing hemodialysis.
As of  January 2010[update], it is also being investigated for the treatment of pruritus in patients with chronic liver disease.
Nalfurafine
Secnidazole
Felbinac
Benznidazole
Ipriflavone
Cefmetazole
Gemifloxacin mesylate
Sulfafurazole