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Graton J, Berthelot M, Gal JF, Girard S, Laurence C, Lebreton J, Le Questel JY, Maria PC, Naus P. Site of protonation of nicotine and nornicotine in the gas phase: pyridine or pyrrolidine nitrogen? J Am Chem Soc. 2002 Sep 04;124(35):10552–62. doi: 10.1021/ja017770a. PMID: 12197757. |