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

PATENT NO 9920005
SERIAL NO

15281942

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
KYORIN PHARMACEUTICAL CO LTDTOKYO 100-0004

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Komatsu, Hidetaka Shimotsuga-gun, JP 3 12
Satoh, Hiroya Shimotsuga-gun, JP 7 109

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