C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/319.5
C07D 209/20 (2006.01)
Patent
CA 2019917
ABSTRACT OF THE DISCLOSURE A process for purifying tryptophan is disclosed. In the process disclosed tryptophan is recrystallized in water-containing acetic acid. By the process disclosed tryptophan with high purity may be obtained with high yield without condensation or neutralization.
Itoh Hiroyuki
Kono Yoshitsugu
Taneda Ryoichi
Watanabe Tsugio
Marcus & Associates
Mitsui Toatsu Chemicals Inc.
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