105067-89-8 15990-62-2 3-Ketolactose 4-O-(beta-D-Xylo-hexopyranosyl-3-ulose)-D-glucopyranose 4-O-beta-D-Xylo-hexopyranos-3-ulos-1-yl-D-glucose D-Glucose, 4-O-beta-D-xylo-hexopyranos-3-ulos-1-yl-