Table II.

Mass spectral ion assignments for CS/DS Δdp4 and Δdp6 oligosaccharides. The Δ symbol is used to signify oligosaccharides with a 4,5-unsaturated uronic acid at the non-reducing terminus.

	m/z	Ion	Description	Composition	Calcd mass	Obsvd mass
dp4	305.06	[M-3H]3-	Δ(HexA)2(HexNAc)2(SO3)2	C28H41N2O28S2	918.13	918.21
	458.05	[M-2H]2-	Δ(HexA)2(HexNAc)2(SO3)2	C28H40N2O28S2	918.13	918.14
	498.03	[M-2H]2-	Δ(HexA)2(HexNAc)2(SO3)3	C28H40N2O31S3	998.07	998.08
	917.01	[M-H]-	Δ(HexA)2(HexNAc)2(SO3)2	C28H41N2O28S2	918.13	918.02
dp6	343.31	[M-4H]4-	Δ(HexA)3(HexNAc)3(SO3)3	C42H59N3O42S3	1377.20	1377.28
	458.07	[M-3H]3-	Δ(HexA)3(HexNAc)3(SO3)3	C42H60N3O42S3	1377.20	1377.24
	464.08	[M-3H]3-	(HexA)3(HexNAc)3(SO3)3	C42H62N3O43S3	1395.21	1395.27
	484.71	[M-3H]3-	Δ(HexA)3(HexNAc)3(SO3)4	C42H60N3O45S4	1457.16	1457.16
	687.55	[M-2H]2-	Δ(HexA)3(HexNAc)3(SO3)3	C42H61N3O42S3	1377.20	1377.12
	696.51	[M-2H]2-	(HexA)3(HexNAc)3(SO3)3	C42H63N3O43S3	1395.21	1395.27
	727.52	[M-2H]2-	Δ(HexA)3(HexNAc)3(SO3)4	C42H61N3O45S4	1457.16	1457.06
	899.01	[M-H]-	Δ(HexA)2(HexNAc)2(SO3)2-H2O	C28H40N2O27S2	900.12	900.01