Processes for preparing anhydrous and hydrate forms of antihistaminic piperidine derivatives, polymorphs and pseudomorphs thereof
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United States of America Patent
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Nov 21, 2006
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N/A
app pub date -
Jun 3, 2002
filing date -
May 18, 1994
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Expired
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Abstract
The present invention is related to novel processes for preparing anhydrous and hydrated forms of piperidine derivatives, polymorphs and pseudomorphs thereof of the formulas ##STR00001## which are useful as antihistamines, antiallergic agents and bronchodilators.
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