PROCESS FOR PREPARING CRYSTALLINE FORM I OF OLANZAPINE

PROCESS FOR PREPARING CRYSTALLINE FORM I OF OLANZAPINE

A process for preparing olanzapine Form I comprises: a) cooling a concentrated solution of olanzapine; b) isolating wet crystals of olanzapine Form I; and c) drying wet crystals and recovering olanzapine Form 1. Drying can be conducted by stepwise increases in the drying temperatures, with extended...

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Bibliographische Detailangaben
Hauptverfasser: DAYARAM VISHAL PARMAR, PANDURANG SHARAT NARSAPUR, SUNDARAM VENKATARAMAN, SITARAM HITENDRA CHAUDHARY, BOMMAREDDY SIVA KUMAR REDDY
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:A process for preparing olanzapine Form I comprises: a) cooling a concentrated solution of olanzapine; b) isolating wet crystals of olanzapine Form I; and c) drying wet crystals and recovering olanzapine Form 1. Drying can be conducted by stepwise increases in the drying temperatures, with extended holding times at each temperature condition.