Crystalline polymorphs and solid mesophase forms of sodium 2-(5-bromo-4-(4-cyclopropylnaphthalen-1-yl)-4H-1,2,4-triazol-3-ylthio)acetate are described. In addition, pharmaceutical compositions and uses of such compositions for the treatment of a variety of diseases and conditions are provided.本發明描述2-(5-溴-4-(4-環丙基萘-1-基)-4H-1,2,4-三唑-3-基硫基)乙酸鈉之結晶多晶型及固體中間相型。此外,本發明提供一種醫藥組合物及該等組合物用於治療多種疾病及病症之用途。