1.2.1.69 Chloroacetaldehyde 0.25 mM, time-dependent inactivation 2475 1.2.1.69 Cu2+ 1 mM, strong inhibition 19 1.2.1.69 iodoacetamide 0.05 mM, strong inhibition 67 1.2.1.69 Mg2+ 1 mM, 80% loss of activity, possibly due to a decreased dissociation rate of NADH from the enzyme 6