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HPLC-UV and high-resolution mass spectrometry (HRMS) analysis of GreenIuronic® after enzymatic hydrolysis with chondroitinase AC. In (A,B) HPLC-UV chromatogram of GreenIuronic® sample and its positive HRMS spectrum. In (C,D) HPLC-UV chromatograms of a mixture of chondroitin disaccharides standard ΔDi-0S, ΔDi-4S, and ΔDi-6S and a solution of the disaccharide standard ΔDi-HA of HA.
