Patent ID: 8134032
Filing Date: 2012-03-13
Classification: A61P,C07B,C07C

Abstract:
1. A crystalline modification of (1R,2R)-3-(3-dimethylamino-1-ethyl-2-methyl-propyl)-phenol selected from the group consisting of: crystalline modification A having X-ray diffraction peaks at 14.80±0.20 (2Θ), 15.58±0.20 (2Θ), 17.79±0.20 (2Θ) and 25.33±0.20 (2Θ); crystalline modification B having X-ray diffraction peaks at 14.11±0.20 (2Θ), 16.08±0.20 (2Θ), 17.17±0.20 (2Θ) and 29.06±0.20 (2Θ); and crystalline modification C having X-ray diffraction peaks at 10.93±0.20 (2Θ), 16.43±0.20 (2Θ), 21.17±0.20 (2Θ) and 24.92±0.20 (2Θ).