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organic compounds
The title compound, C13H12Cl3N3O.CH3OH, was prepared by amidolysis of the corresponding methyl tetrahydro-β-carboline-3-carboxylate, obtained in turn by condensation of tryptophan methyl ester and chloral. The crystal structure confirms the relative cis-array of the substituents at C1 and C3, and thus the absolute R configuration at C1.