NOVEL CRYSTALLINE POLYMORPH OF N-[2-[(1S)-1-(3-ETHOXY-4-METHOXYPHENYL)-2- (METHYLSULFONYL)ETHYL]-2,3-DIHYDRO-1,3-DIOXO-1H-ISOINDOL-4-YL]ACETAMIDE AND PROCESS FOR PREPARATION THEREOF
The present invention relates to novel crystalline polymorph of N-[2-[(lS)-l-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]2,3- dihydro-l,3-dioxo-lH-isoindol-4-yl] acetamide represented by the following structural formula-1 and process for its preparation.