Provided herein are various salts, including tris(hydroxymethyl)aminomethane salts and sodium salts, as well as various crystalline forms of the compound represented by the structural formula: Also provided are pharmaceutical compositions comprising these salts and crystalline forms, methods for their manufacture, and uses thereof for treating conditions, including but not limited to conditions that would benefit from inhibition of dihydroorotate dehydrogenase (DHODH).L'invention concerne divers sels, comprenant des sels de tris(hydroxyméthyl)aminométhane et des sels de sodium, ainsi que diverses formes cristallines du composé représenté par la formule structurale ci-jointe. L'invention concerne également des compositions pharmaceutiques comprenant ces sels et formes cristallines, des procédés pour leur fabrication, et leurs utilisations pour traiter des affections comprenant, mais sans s'y limiter, des affections qui pourraient bénéficier de l'inhibition de la dihydroorotate déshydrogénase (DHODH).
