CRYSTAL FORM VIII OF ATORVASTATIN HEMI- CALCIUM, PROCESSES FOR ITS PREPARATION AND PHARMACEUTICAL COMPOSITION COMPRISING ATORVASTATIN HEMI-CALCIUM FORM VIII

摘要

The present invention provides novel forms of atorvastatin designated Forms VI, VII, VIII, IX, X, XI and XII and novel processes for their preparation as well as processes for preparing atorvastatin Forms I, II,IV, V and amorphous atorvastatin.