Structure of cis-1-{2-[(2-butoxy)phenylcarbamoyloxy]cycloheptylmethyl}piperidinium chloride

C 24 H 39 N 2 O 3 + .Cl - , M r =439.0, monoclinic, P2 1 /n, a=11.749 (7), b=7.083 (4), c=28.763 (21) A, β=97.15 (6) o , V=2375 (3) A 3 , Z=4, D m =1.23 (1), D x =1.227 Mg m -3 , λ(Mo Kα)=0.71069 A, μ=0.184 mm -1 , F(000)=952, T=293 K, final R=0.060 for 1624 unique observed reflections. The title compound, which is a potent local anaesthetic of the phenylcarbamate type, was designed to explore the stereostructural requirements of the anaesthetic receptor by locking the phenylcarbamate-amine link into a semirigid system