| 摘要 |
The subject-matter of the invention is the B form of ethyl [(7S)-7-[(2R)-2-(3-chlorophenyl)-2-hydroxyethylamino]-5,6,7,8-tetrahydronaphth-2-yloxy]acetate hydrochloride, of use as a medicament, which exhibits in particular the following physical characteristics: characteristic IR absorption peaks (cm<SUP>-1</SUP>): 2780, 2736, 1722, 1211; melting point: 129+/-2° C.; characteristic lines of the powder X-ray diffraction diagram (to within 0.1(2theta)): 7.69, 9.83, 13.95, 16.58, 18.70, 20.40, 21.57, 23.40, 24.15 and 25.64. The product can be obtained by salification of the base or recrystallization of the salt from an alcohol. |
