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Process and solvate of 2-methyl-thieno-benzodiazepine

  • US 5,703,232 A
  • Filed: 01/16/1996
  • Issued: 12/30/1997
  • Est. Priority Date: 03/24/1995
  • Status: Expired due to Term
First Claim
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1. A process for preparing substantially pure Form I olanzapine comprising drying a C1 -C3 alcohol solvate of olanzapine, and then crystallizing the dried solvate with one or more solvents selected from ethyl acetate, acetone, 2-propanol, t-butanol, tetrahydrofuran and toluene.

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