Nateglinide crystals

Details Nateglinide crystals Nateglinide crystals

2004-10-15

2008-08-12

Puttlitz, Karl (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C562S554000

Reexamination Certificate

active

07411089

ABSTRACT:
New nateglinide crystals, i.e. nateglinide A-type crystals (main peaks in powder X-ray diffraction: 4.4°, 5.2°, 15.7°, 18.5°(2θ)), M-type crystals (main peaks in powder X-ray diffraction: 6.0°, 14.2°, 15.2°, 18.8°(2θ)) and P-type crystals (main peaks in powder X-ray diffraction: 4.8°, 5.3°, 14.3°, 15.2°(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 or, alternatively, by dissolving nateglinide in a mixed solvent composed of a solvent in which nateglinide is highly soluble and another solvent in which it is difficultly soluble, cooling the nateglinide solution to form crystals, filtering the mixture and drying the crystals at a specified temperature.

REFERENCES:
patent: 5463116 (1995-10-01), Sumikawa et al.
patent: 5488150 (1996-01-01), Sumikawa et al.
patent: 6861553 (2005-03-01), Yahalomi et al.
patent: 2003/0229249 (2003-12-01), Sumikawa et al.
patent: 2005/0101672 (2005-05-01), Koguchi et al.
patent: 2 425 538 (2003-04-01), None
patent: 0 196 222 (1986-10-01), None
patent: 5-208943 (1993-02-01), None
patent: WO 02/34713 (2002-05-01), None
U.S. Appl. No. 11/757,769, filed Jun. 4, 2007, Sumikawa, et al.

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