| 摘要 |
The present invention relates to new crystalline forms I, II and III of 2-methyl-4-(4-methylpiperazin-1-yl)-10H-thieno[2,3-b][1,5]-benzodiazepine hydrochloride, a process for the preparation thereof and pharmaceutical compositions containing the same. Said new polymorphic forms are useful as active ingredients for the treatment of psychotic conditions.
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