STABLE CRYSTAL FORM OF FEBUXOSTAT AND PROCESS FOR THE PREPARATION THEREOF

摘要

The invention relates to novel stable polymorphic form FC-1 of Febuxostat [2-[3-cyano- 4-(2-Methyl-propoxy)pheriyl]-4-methyl-5-thiazole carboxylic acid]. The invention also provides process for the preparation of novel stable polymorphic form FC-1 with >99.8% HPLC purity.