IMPROVED PROCESS FOR THE PREPARATION OF CRYSTALLINE VENLAFAXINE HYDROCHLORIDE FROM B

摘要

The present invention provides an improved process for the preparation of crystalline venlafaxine hydrochloride Form B characterized by powder X-ray diffraction peaks at 6.7, 10.3, 13.5, 15.4, 15.6, 18.3, 19.8, 20.3 and 21.8±0.2 degree two-theta comprises dissolving venlafaxine hydrochloride in 2-methoxy ethanol and subsequent crystallization. Drawing: 03 Sheets. Total Pages: 14. Fig. Nil