PURIFICATION PROCESS FOR PREPARING HIGHLY PURE ARFORMOTEROL TARTRATE SUBSTANTIALLY FREE OF DESFORMYL IMPURITY
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United States of America Patent
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Issued Date -
Mar 1, 2012
app pub date -
Aug 23, 2011
filing date -
Aug 26, 2010
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Abandoned
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Abstract
Provided herein is a highly pure arformoterol tartrate or an amorphous form thereof substantially free of desformyl impurity, 2-hydroxy-5-[(1R)-1-hydroxy-2-[[(1R)-2-(4-methoxyphenyl)-1-methylethyl]amino]ethyl]aniline, process for the preparation thereof, and pharmaceutical compositions comprising the highly pure arformoterol tartrate substantially free of the desformyl impurity.
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