Reaction catalyzed by exo-alpha-sialidase (3.2.1.18)

		+		H2O	=			+
	2'-(4-methylumbelliferyl) 9-O-acetyl-alpha-D-N-acetylneuraminic acid	+		H2O	=		4-methyl-umbelliferone	+		9-O-acetyl-alpha-D-N-acetylneuraminic acid