2-Chloro-4-nitrophenyl-maltopentaoside 99304-80-0 CNPG5 beta-2-Chloro-4-nitrophenyl-maltopentaoside beta-D-Glucopyranoside, 2-chloro-4-nitrophenyl O-alpha-D-glucopyranosyl-(1-4)-O-alpha-D-glucopyranosyl-(1-4)-O-alpha-D-glucopyranosyl-(1-4)-D-alpha-D-glucopyranosyl-(1-4)-