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. 2017 Aug 7;6(1):A0060. doi: 10.5702/massspectrometry.A0060

Fig. 3. Negative-ion CID spectra of (a) 2PA-labeled NA4 glycan [M−H]− and (b) on-target 3-AQ-labeled NA4 glycan [M−H]−. A similar CID spectrum can be obtained from [M+H2PO4]− . The main product ions are illustrated in the inset without distinguishing between the 6-antenna (upper) and the 3-antenna (lower), but D (E) ions are derived from only the 6-antenna (3-antenna). Reproduced with permission from ref. 35. Copyright (2012) American Chemical Society.

Fig. 3. Negative-ion CID spectra of (a) 2PA-labeled NA4 glycan [M−H]− and (b) on-target 3-AQ-labeled NA4 glycan [M−H]−. A similar CID spectrum can be obtained from [M+H2PO4]− . The main product ions are illustrated in the inset without distinguishing between the 6-antenna (upper) and the 3-antenna (lower), but D (E) ions are derived from only the 6-antenna (3-antenna). Reproduced with permission from ref. 35. Copyright (2012) American Chemical Society.