Novel stable crystal of thiazolidinedione derivative and...

Details Novel stable crystal of thiazolidinedione derivative and... Novel stable crystal of thiazolidinedione derivative and...

C - Chemistry, Metallurgy

07

D

C07D 277/34 (2006.01) A61K 31/426 (2006.01) A61P 3/10 (2006.01)

Patent

CA 2407349

A homogeneous crystal having excellent stability which is suitable for the industrial-scale production of 5-[(2,4-dioxothiazolidin-5-yl)methyl]-2-methoxy- N-[[4-(trifluoromethyl)phenyl]methyl]benzamide (KRP-297). The novel crystal of KRP-297 is produced through recrystallization from an alcohol solvent. It is characterized by having diffraction angles (2.theta.) at at least 9.7~, 15.0~, and 22.5~ in X-ray powder diffractometry.

L'invention concerne un cristal homogène possédant une excellente stabilité, approprié pour la production du 5-[(2,4-dioxothiazolidin-5-yl)methyl]-2-methoxy-N-[[4-(trifluoromethyl)phenyl]methyl]benzamide (KRP-297) à l'échelle industrielle. Ce nouveau cristal de KPR-297 est produit par recristallisation à partir d'un solvant d'alcool. Il est caractérisé en ce qu'il possède des angles de diffraction (2.theta.) d'au moins 9,5·, 15,0·, et 22,5· dans une diffractométrie de poudre aux rayons X.

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