Pinaverium bromide.

The structure of pinaverium bromide (systematic name: 4-[(2-bromo-4,5-di-meth-oxy-phen-yl)meth-yl]-4-{2-[2-(6,6-dimethyl-2-bi-cyclo-[3.1.1]hepta-nyl)eth-oxy]eth-yl}morpholin-4-ium bromide; CHBrNO), was determined at 110 K. It has monoclinic (2) symmetry. It is of inter-est with respect to its anti-inflammatory properties. The asymmetric unit contains two independent mol-ecules, one of which exhibits disorder of the bi-cyclo terminal group (occupancy factors: 0.78 and 0.22).