POLYMORPHIC FORM OF ALCAFTADINE, COMPOSITION AND PROCESS

摘要

The present invention relates to novel polymorphic forms of alcaftadine, processes of preparing novel polymorphic forms of alcaftadine and pharmaceutical compositions thereof.

主权项

1. An α-crystalline form of alcaftadine having characteristics of X-ray diffraction peaks at 8.3, 10.9, 12.7, 14.7, 15.1, 15.4, 16.0, 16.5, 17.2, 17.7, 18.7, 19.1, 19.9, 21.1, 22.0, 22.7, 24.1, 24.7, 25.1, 26.3, 26.7, 27.2, 28.0, 28.5±0.2 degrees 2θ.