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A, UVPD spectrum and B, HCD spectrum of [M-2H]2−(m/z 509) of disulfated tetrasaccharide IdoA-GlcNAc6S-GlcA-GlcNAc6S-(CH2)5NH2.C, annotated structure showing fragment ions for both UVPD and HCD, with fragments only seen in UVPD outlined in red. Reprinted with permission from reference (59). Copyright 2019 American Chemical Society.
