beta-D-GalNAc-(1->4)-[alpha-Neu5Ac-(2->3)]-beta-D-Gal-(1->4)-D-GalNAc-yl group
beta-d-galnac-(1->4)-[alpha-neu5ac-(2->3)]-beta-d-gal-(1->4)-d-galnac-yl group
A glucosaminyl group derived from β-<small>D</small>-GalNAc-(1→4)-[α-Neu5Ac-(2→3)]-β-<small>D</small>-Gal-(1→4)-<small>D</small>-GalNAc. The precursor to the Sda antigen, a pentasaccharide structure on N- and O-glycoproteins