Process for preparing amorphous rifaximin and the amorphous rifaximin thus obtained
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United States of America Patent
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Issued Date -
Jun 3, 2010
app pub date -
Jun 18, 2008
filing date -
Jun 20, 2007
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Abandoned
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Abstract
A process is described which enables Rifaximin in a completely amorphous form to be obtained. Said process comprises the steps of dissolving crude Rifaximin in absolute ethanol while hot and then collecting after precipitation by cooling the title compound under amorphous form.
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