Reaction catalyzed by cis-1,2-dihydrobenzene-1,2-diol dehydrogenase (1.3.1.19)

		+		NAD+	=			+		NADH
	cis-1,2-cyclohexanediol	+		NAD+	=		cyclohex-1-ene-1,2-diol	+		NADH