Process of making sertraline form II
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United States of America Patent
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Aug 10, 2010
Grant Date -
Jul 9, 2009
app pub date -
Feb 17, 2009
filing date -
Jun 1, 2006
priority date (Note) -
Expired
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Abstract
The present invention discloses novel and improved processes for preparation of sertraline hydrochloride crystalline form II. Thus, for example, sertraline free base is dissolved in isoamyl alcohol at 25-30° C., pH of the mass is adjusted to 2.0 with conc. hydrochloric acid (36%) at 25-30° C. and then stirred for 14 hours at 25-30° C. Filtered the solid and dried at 65° C. for 4 hours to give sertraline hydrochloride crystalline form II. The present invention also provides a novel process for preparation of sertraline hydrochloride crystalline form I.
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