. 2022 Jul 21;94(30):10601–10609. doi: 10.1021/acs.analchem.2c00257

Table 1. Summary Table of the Number of Peaks Observed in ATDs, Solvent Effect, and MS/MS Main Losses for Caffeine Metabolite Peaks Resolved with Cyclic Ion Mobility^a^,^b.

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Compounds for which solvent-affected protomers’ peaks ratio also had different fragmentation spectra for high- and low-mobility species. The structural differences, presence or absence of a methyl group, are highlighted with blue or green, accordingly.

Number of peaks could not be identified with full confidence due to the low ionization efficiency of either the species or the substance. However, a possible second peak with low intensity could be observed.

Table 1. Summary Table of the Number of Peaks Observed in ATDs, Solvent Effect, and MS/MS Main Losses for Caffeine Metabolite Peaks Resolved with Cyclic Ion Mobilitya,b.

Table 1. Summary Table of the Number of Peaks Observed in ATDs, Solvent Effect, and MS/MS Main Losses for Caffeine Metabolite Peaks Resolved with Cyclic Ion Mobility^a^,^b.