Polymorphic forms of olanzapine

摘要

The invention provides three new polymorphic forms of 2-methyl-4-[4-methyl-1-piperazinyl]-10H-thieno[2,3b][1,5]benzodiazepine (Olanzapine) (Formula A), the process for preparing the new polymorphs and pharmaceutical compositions containing the polymorphs. The new polymorphic forms of olanzapine are useful for the treatment of psychotic conditions, mild anxiety and gastrointestinal conditions.