Reaction catalyzed by chitinase (3.2.1.14), exo-chitinase (reducing end) (3.2.1.201)

		+		H2O	=			+
	4-methylumbelliferyl-beta-D-N,N'-diacetylchitobioside	+		H2O	=		4-methylumbelliferone	+		N,N'-diacetylchitobiose