ZILPATEROL HYDROCHLORIDE IN A PARTICULAR CRYSTALLIZED FORM, PROCESS FOR PREPARING THE SAME AND INTERMEDIATE PRODUCTS THEREFOR

摘要

The subject of the invention is anhydrous zilpaterol hydrochloride in crystallized form, characterized in that it comprises less than 5% of crystals with a size of less than 15 microns, the rest of the crystals having a size of less than 250 microns. The product obtained is used as a food additive to promote weight gain in farm animals.