succinimidyl [2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl]-(1→3)-2-N-acetyl-2-deoxy-α-D-galactopyranoside

phenyl-3,4-di-O-acetyl-2-azido-6-O-triphenylmethyl-2-deoxy-1-thio-D-galactopyranoside

N-trichloroethoxycarbonyl-3-O-(2-acetamido-3,4-di-O-acetyl-2-deoxy-α-D-galactopyranosyl)-L-serine benzyl ester

N-trichloroethoxycarbonyl-3-O-(2-acetamido-3,4-di-O-acetyl-2-deoxy-6-O-triphenylmethyl-α-D-galactopyranosyl)-L-serine benzyl ester

N-trichloroethoxycarbonyl-3-O-(3,4-di-O-acetyl-2-azido-2-deoxy-6-O-triphenylmethyl-α-D-galactopyranosyl)-L-serine benzyl ester