Table 1. Chondroitin Sulfate Saccharides Included in the Comparative Analysis^a.

			composition
saccharide units	m/z [M – H]−1	retention time (min)	ΔHexA	HexA	GalN	SO3	Ac	ion species
dp1	302.29	102.5	0	0	1	1	1	[0,0,1,1,1]
dp2	378.1	106	1	0	1	0	1	[1,0,1,0,1]
	468.01	106	1	0	1	0	1	modificationb
	757.216	106	1	0	1	0	1	dimer
dp2	458.06	97	1	0	1	1	1	[1,0,1,1,1]
	917.13	97	1	0	1	1	1	dimer
dp2	537.02	90.5	1	0	1	2	1	[1,0,1,2,1]
	268.51	90.5	1	0	1	2	1	z = 2
	458.06	90.5	1	0	1	2	1	[1,0,1,2,1]c
dp3	634.09	93.5	1	1	1	1	1	[1,1,1,1,1]
	839.07	86.5	0	1	2	3	2	sat. [0,1,2,3,2]
	419.03	86.5	0	1	2	3	2	z = 2
dp4	757.22	96	1	1	2	0	2	[1,1,2,0,2]
	837.17	86	1	1	2	1	2	[1,1,2,1,2]
	997.09	105.5	1	1	2	3	2	[1,1,2,3,2]
	498.04	105.5	1	1	2	3	2	z = 2
dp5	568.65	91	0	2	3	2	3	sat. [0,2,3,2,3], z = 2
dp6	1136.33	106	1	2	3	0	3	[1,2,3,0,3]
dp8	757.22	92	1	3	4	0	4	[1,3,4,0,4], z = 2

^aDescription of composition by shorthand adapted from ref (30). Abbreviations: ΔHexA, Δ-4,5-unsaturated hexuronic acid; HexA, saturated hexuronic acid; GalN, galactosamine; SO₃, sulfate group; Ac, acetyl group; sat., saturated.

^bIon with unknown modification assigned as [1,0,1,0,1] based on chromatographic retention time.

^cLoss of SO₃.