Acta Cryst. (2004). E60, o793-o794 [ doi:10.1107/S1600536804008670 ]
Abstract: In the crystal structure of the title compound, C21H24ClNO3, there are two independent molecules in the asymmetric unit. The compound is the product of a new procedure for preparing Diels-Alder adducts of thebaine with 7 substituents.
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