Reaction catalyzed by beta-N-acetylhexosaminidase (3.2.1.52)

		+		H2O	=			+
	4-nitrophenyl 2-acetamido-2-deoxy-beta-D-galactosaminide	+		H2O	=		4-nitrophenol	+		2-acetamido-2-deoxy-beta-D-galactosamine