Patent ID: 9034892
Filing Date: 2015-05-19
Classification: A61P,C07D

Abstract:
1. A rifaximin polymorph mesylate Form, wherein the polymorph exhibits an X-ray powder diffraction pattern having characteristic peaks expressed in degrees 2θ (+/−0.20 degree θ) at 5.34, 6.93, and 7.41; or 5.34, 16.23, and 17.70; or 5.34, 7.41, 8.46, and 10.62; or 6.93, 8.46, 10.62, and 10.95; or 6.93, 7.41, and 8.46; or 5.34, 6.93, 7.41, and 17.94; or 5.34, 6.93, 7.41, 8.46, and 10.62.