The crystal structure of the hydrobromide of d/-betaprodine (beta d/-1,3-dimethyl-4-phenyl-4-propionoxypiperidine) has been determined by the heavy-atom method from three-dimensional intensity data collected with a scintillation-counter diffraetometer. The structure has been refined by three cycles of differential syntheses to an R-factor of 0-10, and the hydrogen atoms of the molecule of betaprodine have been located from a three-dimensional difference synthesis. In the betaprodine molecule the piperidine ri…
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