C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/531.9
C07C 101/32 (1985.01)
Patent
CA 1203248
ABSTRACT OF THE DISCLOSURE A process for producing an optically active threo-3-(3,4-dihydroxyphenyl)serine useful as a remedy for hypotension or as an antidepressant, which comprises allowing the crystal nuclei of an optically active threo-3-(3,4-dihydroxyphenyl)serine to be present in a supersaturated solution of racemic threo-3-(3,4- dihydroxyphenyl)serine and allowing the same optically active compound as that of said crystal nuclei to crystallize preferentially out of said supersaturated solution.
418855
Ishizumi Kikuo
Maeshima Kaoru
Nagata Shoji
Ohashi Naohito
Marks & Clerk
Sumitomo Chemical Company Limited
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