Patent ID: 7244415
Filing Date: 2007-07-17
Classification: A61K,Y10S

Abstract:
1. A suspension of crystalline tiotropium bromide anhydrate in the propellant gases HFA 227 and/or HFA 134a, optionally in admixture with one or more other propellant gases chosen from propane, butane, pentane, dimethylether, CHClF 2 , CH 2 F 2 , CF 3 CH 3 , isobutane, isopentane and neopentane, wherein the crystalline tiotropium bromide anhydrate is characterised by the elementary cell a=10.4336(2)Å, b=11.3297(3) Å, c=17.6332(4) Å, α=90°, β=105.158(2)° and γ=90°, with a cell volume=2011.89(8) Å 3 .