Patent ID: 6806280
Filing Date: 2004-10-19
Classification: A61P,C07D

Abstract:
A compound which is a polymorphic form of 5-[4-[2-(N-methyl-N-(2-pyridyl)amino)ethoxy]benzyl]thiazolidine-2,4-dione, maleic acid salt, wherein said compound provides at least one of:(i) an infra red spectrum containing peaks at 1763, 912, 856 and 709 cmâˆ’1; (ii) a Raman spectrum containing peaks at 1762, 1284, 912 and 888 cmâˆ’1; (iii) a solid-state 13C nuclear magnetic resonance spectrum containing peaks at 111.0, 113.6, 119.8, 129.1, 130.9, 131.8, 134.7, 138.7, 146.5, 152.7, 157.5, 169.5. 171.0, 178.7 ppm; and (iv) an X-ray powder diffraction pattern having calculated lattice spacings at 5.87, 5.30, 4.69, 4.09, 3.88, 3.61, 3.53 and 3.46 Angstroms.