Patent ID: 8933123
Filing Date: 2015-01-13
Classification: A61K,A61P,C07B,C07C

Abstract:
1. A crystalline Form Z1 of O-desmethyl-venlafaxine succinate characterized by: (a) a solid state (b) a water content of about 1.0% to about 2.0% w/w, when analyzed by Karl Fischer method; and (c) a powder XRD pattern having peaks 5.1, 10.3, 12.1 13.3, 14.3, 15.9, 16.7, 17.7, 19.2, 20.0, 20.4, 23.3, 24.5, 25.2, 25.9, 26.7 and 31.4 degrees (±0.2° 2θ).