Process of preparation of substituted tetrafluorobenzylaniline compound and its pharmaceutically approved salts
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United States of America Patent
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Feb 24, 2009
Grant Date -
Jul 10, 2008
app pub date -
May 25, 2006
filing date -
May 25, 2005
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Abstract
This invention relates to a method for preparing tetrafluorobenzyl-5-aminosalicylic acid derivative and its pharmaceutically acceptable salt compounds. In particular, this invention relates to a method for preparing tetrafluorobenzyl-5-aminosalicylic acid derivative and its pharmaceutically acceptable salts by using tetrafluorobenzilidine-5-aminosalicylic acid derivative as an intermediate.
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