2-Nitrophenyl-2-acetamido-2-deoxy-6-O-beta galactopyranosyl-alpha galactopyranoside 93496-42-5 alpha-D-Galactopyranoside, 2-nitrophenyl 2-(acetylamino)-2-deoxy-6-O-beta-D-galactopyranosyl-, (3beta)- o-Nitrophenyl-adgg