2H-1-Benzopyran-2-one, 7-((2-(acetylamino)-2-deoxy-4-O-beta-D-galactopyranosyl-beta-D-glucopyranosyl)oxy)-4-methyl- 73448-32-5 Methylumbelliferyl 2-acetamido-2-deoxy-beta-D-lactoside Mumadl