128962-66-3 MeRG Methyl 2-O-(6-deoxy-alpha-L-mannopyranosyl)-beta-D-galactopyranoside Methyl 2-O-alpha-rhamnopyranosyl-beta-galactopyranoside beta-D-Galactopyranoside, methyl 2-O-(6-deoxy-alpha-L-mannopyranosyl)-