The present invention concerns the use of 1-isopropyl-3-[(4-m-toluidino-3-pyridyl)sulphonyl]-urea in the pharmaceutical field. In particular, it proposes the use of a pure and stable polymorphic form of 1-isopropyl-3-[(4-m-toluidino-3-pyridyl)sulphonyl]-urea for the preparation of solid pharmaceutical forms, and likewise a method of synthesis to obtain such a pure and stable polymorphic form of 1-isopropyl-3-[(4-m-toluidino-3-pyridiyl)sulphonyl]-urea.

 
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