4-Bromophenyl 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-b-D-glucopyranoside is an aryl O-​β-​D-​glucosaminide. The deacylated form of 4-Bromophenyl 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-b-D-glucopyranoside is biologicaly active, inhibiting bioluminescence of marine bacteria.