Process For the Preparation of Polymorphs of Mesotrione
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United States of America Patent
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Issued Date -
Aug 14, 2008
app pub date -
Aug 3, 2005
filing date -
Aug 26, 2004
priority date (Note) -
Abandoned
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Abstract
A process for selectively controlling the crystallisation of thermodynamically stable Form (1) or kinetically stable Form (2) polymorphs of mesotrione from an aqueous mesotrione solution, said method comprising adjusting the pH of the mesotrione solutions to a value wherein said thermodynamically stable Form (1) or kinetically stable Form (2) mesotrione is ultimately obtained is disclosed.
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