Method for crystallization of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]-ethyl]-1,3-propanediol hydrochloride
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United States of America Patent
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Nov 15, 2016
Issued Date -
N/A
app pub date -
Mar 18, 2009
filing date -
Mar 24, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A method for highly efficiently preparing high purity crystals of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chloro-phenyl]-ethyl]-1,3-propanediol hydrochloride. The method involves dissolving 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol in a mixed solvent comprising a solvent in which its hydrochloride is highly soluble and a solvent in which its hydrochloride is less soluble, to prepare a solution of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol; and then adding hydrochloric acid to the resulting solution with stirring, to crystallize the hydrochloride of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chloro-phenyl]ethyl]-1,3-propanediol.
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International Classification(s)
- 2009 Application Filing Year
- A61K Class
- 10313 Applications Filed
- 6747 Patents Issued To-Date
- 65.43 % Issued To-Date
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- A61K Class
- 0 % this patent is cited more than
- 9 Age
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