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NETD spectrum of [M-4H]4−of tetrasulfated tetrasaccharide GlcA-GlcNS-IdoA-GlcNS3S6S and cleavage map illustrating the ability for NETD to distinguish 3-O sulfation from 6-O sulfation with the presence of0,3A4. Reprinted with permission with reference (96). Copyright 2018 American Chemical Society.
