13168-24-6 3-O-alpha-D-Galactosylgalactose D-Galactose, 3-O-alpha-D-galactopyranosyl- Gal alpha(1,3)gal Gal-alpha-1-3-gal Galactose alpha 1-3 galactose Galactosyl-alpha-(1-3)galactose Galalpha(1,3)gal galactosyl-(1-3)galactose