Molecular and crystal structure of flutropium bromide

(8r)-8-(2-Fluoroethyl)-3 alpha-hydroxy-1 alpha H, 5 alpha H-tropanium bromide benzilic acid ester (flutropium bromide, Ba 598 BR) crystallizes in the monoclinic space group P 2(1)/n and shows disorder. Nevertheless the averaged crystal structure could be solved and refined to R = 0.113.