Acta Cryst. (2005). E61, o2071-o2073  [ doi:10.1107/S1600536805017782 ]

Dextromethorphan, an antitussive agent

G. Y. S. K. Swamy, K. Ravikumar and A. K. S. Bhujanga Rao

Abstract: The title compound, 4-methoxy-12-methyl-12-azatetracyclo[9.3^1,10.0^2,7]heptadeca-2(7),3,5-triene, C₁₈H₂₅NO, has a T-shaped configuration, with the benzene ring (A) and the fused carbocyclic ring (C) forming the upright stock; the other carbocyclic ring (D) and the piperidine ring (E) are in the arm positions. Rings C, D and E have sofa, chair and chair conformations, respectively. In the crystal packing, the molecules are joined through C-HO hydrogen bonding into chains running along the c axis.

Online 10 June 2005

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