Figure 4.
LC/MS3 product ion mass spectra of N2-acetyl-AαC-6-O-SO3H (m/z 322.1 > 241.1 >) (A), N2-acetyl-AαC-3-O-SO3H (m/z 322.1 > 241.1 >) (B), AαC-HN2-O-Gluc (m/z 376.1 > 200.1 >) (C) and N2-acetyl-AαC-3-O-Gluc (m/z 418.1 > 242.1 >) (D).
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