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|Title:||Crystals of N- (trans-4-isopropylcyclohexlycarbonyl)-D-phenylalanine and methods for preparing them|
|Abstract:||Stable crystals of N-(trans-4-isopropylcyclohexylcarbonyl)-D-phenylalanine may be produced by treating this compound with a solvent at a temperature of at least 10.degree. C. and forming crystals in the solvent at a temperature of at least 10.degree. C. For example, crystals may be formed by crystallization out of solution, or may be formed from solid particles of the compound suspended in a solvent. Crystals formed in this way have different melting point, infra red spectrum and X-ray diffraction patterns from previously known forms of the compound and have enhanced processability, e.g., stability to grinding.|
|Inventor(s):||Sumikawa; Michito (Kawasaki, JP), Koguchi; Yoshihito (Kawasaki, JP), Ohgane; Takao (Kawasaki, JP), Irie; Yasuo (Kawasaki, JP), Takahashi; Satoji (Yottukaichi, JP)|
|Assignee:||Ajinomoto Co., Inc. (Tokyo, JP)|
Patent Claim Types:|
see list of patent claims
|Compound; Composition; Use; Formulation;|
|Country||Document Number||Publication Date|
|Austria||149483||Mar 15, 1997|
|Brazil||1100807||Dec 28, 1999|
|Canada||2114678||Aug 02, 1995|
|Germany||69217762||Apr 10, 1997|
|Germany||10199058||Jan 24, 2002|
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