NEW CRYSTAL FORM OF 3-(4-AMINO-1,3-DIHYDRO-1-OXO-2H-ISOINDOLE-2-YL)-2,6-PIPERIDINEDIONE AND PREPARATION METHOD THEREFOR

摘要

Disclosed are a lenalidomide polymorph, a pharmaceutical composition thereof and a preparation method therefor. There is a crystal form X, XI, XII or XIII in the lenalidomide polymorph. The abovementioned crystal forms are stable to store, good in flowability, small in static electricity and applicable to pharmaceutical preparations.