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US 7,888,531 B2Granted
Nateglinide crystals
AssigneeAjinomoto Co., Inc.
InventorsYoshihito Koguchi, Tomoko Nakao, Michito Sumikawa
Life of this patent
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Abstract
Nateglinide M-type crystals (main peaks in powder X-ray diffraction: 6.0°, 14.2°, 15.2°, 18.8° (2θ)) can be produced by dissolving nateglinide in a solvent in which nateglinide is highly soluble and then adding a solvent in which nateglinide is difficultly soluble.
Claims4
A method for producing nateglinide B-type crystals, which comprises treating nateglinide M-type crystals at a temperature of 40° C. to below 100° C. at a relative humidity of 60% to 95%,
- wherein said nateglinide M-type crystals have the following powder X-ray diffraction peaks:
- 6.0°, 14.2°, 15.2°, 18.8° (2θ).
Dependencies are inferred from the claim text.