Figure 5

(A) Total ion chromatogram (TIC) of two pairs tautomers in positive ion mode using UPLC-LTQ-Orbitrap-MS; (B) HR-ESI-MS spectrum of two pairs tautomers.
(A) Total ion chromatogram (TIC) of two pairs tautomers in positive ion mode using UPLC-LTQ-Orbitrap-MS; (B) HR-ESI-MS spectrum of two pairs tautomers.