<unk>  is a salt of an aromatic fatty acid, 4-phenylbutyrate (4-PBA) or 4-phenylbutyric acid. The compound is used to treat urea cycle disorders, because its metabolites offer an alternative pathway to the urea cycle to allow excretion of excess nitrogen. It is an orphan drug, marketed by Ucyclyd Pharma under the trade name Buphenyl, by Swedish Orphan International (Sweden) as Ammonaps, by Fyrlklövern Scandinavia as triButyrate and by Scandinavian Formulas, Inc. (Sellersville, PA).<unk>  is also a histone deacetylase inhibitor and chemical chaperone, leading respectively to research into its use as an anti-cancer agent and in protein misfolding diseases such as cystic fibrosis.
Sodium phenylbutyrate
Sodium fluoroacetate
Doisynolic acid
Kaurenoic acid
Glucosamine
Tuaminoheptane
Geritol
Testosterone nicotinate