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“In order to further identify DMT-NO, two additional solvent systems were utilized [chloroform-methanol-NHsOH (conc.), 60:10:1 and n-butanol-acetic acid (glacial)-water, 8:1:1]. The N-oxide was also identified by reacting the eluted sample from the thin-layer chromatography plates, corresponding to the Rf for DMT-NO, with zinc and acetic acid. The reduced N-oxide was rechromatographed in the previously described solvent systems and identified as DMT.”