Honing, Maarten published the artcileAdduct ion formation by aromatic amines in thermospray mass spectrometry, Product Details of C7H9NO, the publication is Journal of Mass Spectrometry (1996), 31(5), 527-536, database is CAplus.
The formation of solvent adduct ions in thermospray and ionspray mass spectrometry was studied for twelve aromatic amines: aniline, N-methylaniline, N,N-dimethylaniline, 3-aminophenol, 3-(methylamino)phenol, 3-(dimethylamino)phenol, 2-aminopyridine, 2-(methylamino)pyridine, 2-(dimethylamino)pyridine, 2-amino-5,6-dimethyl-4-hydroxypyrimidine, 2-(methylamino)-5,6-dimethyl-4-hydroxypyrimidine, and 2-(dimethylamino)-5,6-dimethyl-4-hydroxypyrimidine. For all compounds, adduct ions, [M + H + An]+, with A being methanol or acetonitrile, were observed in the thermospray mass spectra; water adduct ions were observed for a few compounds No adduct ions with ammonia were formed when ammonium acetate was added to the liquid chromatog. carrier stream. These observations cannot be explained on the basis of gas-phase ion-mol. reactions of the neutral analyte and protonated solvent or solvent additive mols. Comparative experiments, changing the pH of the carrier stream in both thermospray and ionspray ionization, showed that the solvent adduct ions present in the thermospray mass spectra are not likely to be formed by ion evaporation processes. Incomplete evaporation of droplets or cluster ions is proposed to be responsible for the observations. With this hypothesis, both the absence of ammonium adduct ions and the dependence of the adduct ion abundances on N-methylation can be related to the adduct-analyte bond strengths.
Journal of Mass Spectrometry published new progress about 14703-69-6. 14703-69-6 belongs to alcohols-buliding-blocks, auxiliary class Amine,Benzene,Phenol, name is 3-(Methylamino)phenol, and the molecular formula is C7H9NO, Product Details of C7H9NO.
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