Patent ID: 8349855
Filing Date: 2013-01-08
Classification: A61P,C07D

Abstract:
1. A stable crystalline polymorph of the hydrochloride salt of N-(3-ethynylphenyl)6,7-bis(2-methoxy ethoxy)-4-quinazolinamine designated as Form-P, characterized by an x-ray powder diffraction pattern having characteristic peaks expressed in degrees 2-theta at approximately 2.97, 5.80, 6.36, 9.97, 10.54, 11.48, 15.00, 15.80, 16.64, 17.11, 17.62, 18.15, 18.58, 19.06, 19.78, 20.74, 22.14, 22.96, 23.72, 24.45, 25.67, 26.40, 27.30, 28.14, 28.76, 29.44, 30.15, 30.82, 32.21, 32.95, 33.99, 34.59, 40.49, 40.64, 42.02, 43.87.