The molecule is a beta-D-galactopyranoside having a 4-nitrophenyl substituent at the anomeric position. It has a role as an affinity label. It is a beta-D-galactoside and a monosaccharide derivative.
(2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-(4-nitrophenoxy)oxane-3,4,5-triol