Patent ID: 7332612

Claim:
A process for preparing losartan potassium Form I comprising the steps of: (a) providing a solution of losartan potassium in a first solvent to form a solution, the solvent being characterized as having a boiling point of about 135° C. or below, wherein the first solvent is non-aqueous, (b) reducing the temperature of the solution, (c) adding a second solvent selected from the group consisting of ethyl acetate, toluene, acetone, methylethyl ketone, methylene chloride, acetonitrile, dimethyl carbonate, and hexane to form a mixture after reducing the temperature of the first solvent whereby a precipitate is formed, and (d) isolating losartan potassium Form I characterized by an X-ray powder diffraction pattern having X-ray powder diffraction angles of: 7.24, 11.02, 14.16, 15.07, 18.46, 18.87, 26.53, 27.30 and 29.15.