1-[(Diethyl-amino-carbon-yl)meth-yl]-2-[hydr-oxy(6-methoxy-quinolin-4-yl)meth-yl]-5-vinyl-1-azoniabicyclo-[2.2.2]octane chloride monohydrate.

In the title compound, C(26)H(36)N(3)O(3) (+)·Cl(-)·H(2)O, the mol-ecular structure of the cation is stabilized by a number of C-H⋯O intra-molecular inter-actions. In the crystal structure, O-H⋯Cl and C-H⋯Cl hydrogen bonds link the ions into a ribbon-like structure along the a axis.