3'-O-sulfo-beta-D-galactosyl-(1->3)-N-acetyl-alpha-D-galactosaminide(1-)
3'-o-sulfo-beta-d-galactosyl-(1->3)-n-acetyl-alpha-d-galactosaminide(1-)
A carbohydrate acid derivative anion obtained by deprotonation of  the sulfate OH group of any 3'-<em>O</em>-sulfo-β-<small>D</small>-galactosyl-(1→3)-<em>N</em>-acetyl-α-<small>D</small>-galactosaminide; major species at pH 7.3.