131483-44-8 4,6,4',6'-Dianhydro(galactopyranosylgalactopyranoside) 4,6,4',6-Dianhydro-(alpha-D-galactopyranosyl-alpha-D-galactopyranoside) DAGGP alpha-D-Galactopyranoside, 4,6-anhydro-alpha-D-galactopyranosyl 4,6-anhydro-