POLYMORFER AF EN AKTIV FARMACEUTISK BESTANDDEL.

摘要

The present invention relates to crystalline form I of Febuxostat as well as to pharmaceutical compositions comprising crystalline form I as an active pharmaceutical ingredient. Furthermore the present invention relates to a further polymorphic form of Febuxostat designated as form II and to a novel solvate of Febuxostat. The present invention also relates to methods of making crystalline form I, form II and the novel solvate of Febuxostat.