The invention relates to a method for the preparation for a crystalline form of 1-chloro-4-(β-D-glucopyranos-1-yl)-2-[4-((S)-tetrahydrofuran-3-yloxy)-benzyl]-benzene. In addition the invention relates to a crystalline form obtainable by this method, to a pharmaceutical composition and to the use thereof for preparing medicaments.本發明關於一種用於製備1-氯-4-(β-D-吡喃葡萄糖-1-基)-2-[4-((S)-四氫呋喃-3-基氧基)-苄基]-苯之結晶型式之方法。此外,本發明關於一種藉由此方法獲得之結晶型式,一種醫藥組合物,及其用於製備藥劑之用途。