This invention relates to a new salt of Pridopidine, a drug substance currently in development for the treatment of Huntingtons disease. More specifically the invention provides the pharmaceutically acceptable hydrobromide salt, pharmaceutical compositions comprising this salt, and uses of this salt as a drug substance.本發明係關於普多比啶(Pridopidine)之新穎鹽,其係當前研發用於治療亨汀頓氏舞蹈症(Huntingtons disease)之藥物物質。更特定而言,本發明提供醫藥上可接受之氫溴酸鹽、包含此鹽之醫藥組合物及此鹽作為藥物物質之用途。