| abstract |
The present invention provides novel crystalline form of adefovir dipivoxil, process for its preparation and pharmaceutical composition comprising it. Thus, for example, adefovir dipivoxil was dissolved in a mixture of N-methylpyrrolidone and methyl ethyl ketone, filtered, water was added to the filtrate, stirred for 12 hours and separated solid was filtered, washed with water and dried to give adefovir dipivoxil crystalline form H1. |