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The two previously unknown isomeric aryl-methylpyridines were prepared and analysed. Both 2,6-dimethyl-3,5-(4'-methoxyphenyl)pyridine and 2,4-dimethyl-3,5-di-(4'-methoxyphenyl)pyridine have been(More)
Mass spectrometry has been employed for the characterization of diastereoisomeric isoquinoline alkaloids. Electrospray ionization was used to generate MH(+) ions, and multistage collisionally(More)