alpha-D-galactosyl-(1->3)-alpha-D-galactosyl group
alpha-d-galactosyl-(1->3)-alpha-d-galactosyl group
A galactosyl disaccharide group formed by removing the hydroxy group from the hemiacetal function of α-<small>D</small>-galactosyl-(1→3)-α-<small>D</small>-galactose.