4-Nitrophenyl-alpha-maltotetraose 66068-37-9 NPMT alpha-D-Glucopyranoside, 4-nitrophenyl O-alpha-D-glucopyranosyl-(1-4)-O-alpha-D-glucopyranosyl-(1-4)-O-alpha-D-glucopyranosyl-(1-4)- p-Nitrophenyl alpha-maltotetraoside para-Nitrophenyl-alpha-D-maltotetraose