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Last Updated: December 15, 2025

Claims for Patent: 5,488,150

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Summary for Patent: 5,488,150

Title:	Crystals of N-(trans-4-isopropylcyclohexycarbonyl)-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° C. and forming crystals in the solvent at a temperature of at least 10° 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, eg. stability to grinding.
Inventor(s):	Michito Sumikawa, Yoshihito Koguchi, Takao Ohgane, Yasuo Irie, Satoji Takahashi
Assignee:	Ajinomoto Co Inc
Application Number:	US08/166,144
Patent Claims:

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