Table 1.

The theoretical and observed molecular ion species in HA and HA derivatives along with their relative intensities.

			Observed m/z
Molecular ions	Charge	Theoretical m/z	HA	DHA	BHA
Disaccharide of GlcNAc and GlcA	−1	396.1142	396.1160 (100%)	396.1138 (100%)	396.1139 (100%)
Tetrasaccharide of GlcNAc and GlcA	−1	775.2257	775.2299 (20.0%)	775.2268 (23.3%)	775.2309 (15.7%)
Tetrasaccharide of GlcNAc and GlcA	−1	797.2076	797.2069 (13.7%)	797.2144 (5.5%)	797.2206 (10.8%)
Tetrasaccharide of GlcNAc and GlcA	−2	387.1089	387.1100 (8.0%)	387.1078 (12.0%)	387.1107 (7.2%)
Disaccharide of GlcN and GlcA	−1	354.1036		354.1053 (23.3%)
Disaccharide of GlcNBu and GlcA	−1	424.1455			424.1462 (27.0%)