| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for preparing an azelnidipineα-crystal. <P>SOLUTION: The azelnidipineα-crystal is prepared by a method which includes a step of providing a solution of the azelnidipine by dissolving the azelnidipineβ-crystal in an aprotic solvent, a step of producing a precipitate of anα-form of the azelnidipine by adding an aprotic and nonpolar antisolvent to the solution, and a step of collecting the precipitate. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
