Ivermectin B1a aglycone is an acid degradation product produced by hydrolysis of the disaccharide unit of ivermectin. It can inhibit nematode larval development, but does not cause paralytic activity.
6-O-beta-D-Galactopyranosyl-D-galactose, a disaccharide, is a constituent of the polysaccharide backbone characterized by beta-(1→6) glycoside linkages, with a side chain attached to the primary chain through a beta-(1→3) bond.