Patent ID: 6528507
Filing Date: 2003-03-04
Classification: A61K,A61P,C07C,C07D

Abstract:
A polymorphic Form-I of L-arginine salt of (2S) 3-[4-[2-(phenoxazin-10-yl)ethoxy]phenyl]-2-ethoxypropanoic acid, having the formula I, which is characterized by the data described hereunder:DSC: Endotherm at 181.21Â° C. (onset at 177.70Â° C.) X-ray powder diffraction (2&thgr;): 8.18, 12.40, 16.66, 18.80, 19.44, 22.32, 22.84, 23.10, 23.50, 24.72, 29.84, infrared absorption bands (cmâˆ’1): 3249, 3062, 1709, 1587, 1489, 1374, 1272, 1243, 1112, 1043, 919, 737, 673, 543.