Title:
L-ORNITHINE·CITRIC ACID SALT CRYSTAL
Document Type and Number:
WIPO Patent Application WO/2006/001378
Kind Code:
A1
Abstract:
Disclosed are a crystal of a salt composed of L-ornithine and citric acid, a crystal of a salt composed of L-ornithine and citric acid whose 5 weight% aqueous solution has a pH of 3-6, a crystal of a salt composed of L-ornithine and citric acid wherein the composition ratio (molar ratio) between L-ornithine and citric acid is 2:1, a method for producing a crystal of a salt composed of L-ornithine and citric acid which is characterized in that L-ornithine and citric acid are dissolved in water and a crystal is separated from the thus-obtained aqueous solution, and such a method for producing a crystal of a salt composed of L-ornithine and citric acid wherein the aqueous solution has a pH of 3-6.
Inventors:
MURATA HIDEKI
YAMAMOTO YU
YAMAMOTO YU
Application Number:
PCT/JP2005/011635
Publication Date:
January 05, 2006
Filing Date:
June 24, 2005
Export Citation:
Assignee:
KYOWA HAKKO KOGYO KK (JP)
MURATA HIDEKI
YAMAMOTO YU
MURATA HIDEKI
YAMAMOTO YU
International Classes:
C07C227/16; C07C227/42; C07C229/26; C07C51/41; C07C51/43; C07C59/265; (IPC1-7): C07C229/26; C07C51/41; C07C51/43; C07C59/265; C07C227/16; C07C227/42
Foreign References:
| JPH04229184A | 1992-08-18 | |||
| JP2003144088A | 2003-05-20 | |||
| JPS55136254A | 1980-10-23 | |||
| JP2000086482A | 2000-03-28 |
Other References:
See also references of EP 1767521A4
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