NEW CRYSTAL FORM OF TOPIROXOSTAT, AND PREPARATION METHOD THEREFOR

摘要

The present invention relates to a new crystal form of 5-(2-cyan-4-pyridyl)-3-(4-pyridyl)-1,2,4-triazole, and a preparation method therefor. The new crystal form provided in the present invention can be used for treating gout and hyperuricemia. The new crystal form provided in the present invention has good stability, an obvious refinement effect in process, and has a solubility and hygroscopicity satisfying drug use requirements. The crystal form A provided in the present invention has favorable performance facilitating industrial production, and has important value for further optimization and development of the drug.