Reaction catalyzed by unsaturated chondroitin disaccharide hydrolase (3.2.1.180)

		+		H2O	=			+
	beta-D-4-deoxy-DELTA4-GlcAp-(1->3)-beta-D-GalNAc6S	+		H2O	=		5-dehydro-4-deoxy-D-glucuronate	+		N-acetyl-beta-D-galactosamine-6-O-sulfate