1.1.1.106	p-chloromercuribenzoate	0.1 mM, 85% inhibition after 15 min, 200 mM 2-mercaptoethanol restores 70% of enzyme activity within 10 min, 20 mM D-pantoate and 1 mM NAD+ prevent inactivation when added simultaneously	
1.1.1.106	iodacetic acid	1 mM, 50% inhibition after 14 min, half-inactivation time increases to 29.0 min in the presence of 20 mM D-pantoate, 70% inhibition within 50 min at pH 7.2, 20 mM pantoate decreases inactivation from 70 to 30%	
1.1.1.106	5,5'-dithiobis(2-nitrobenzoic acid)	1 mM, 50% inhibition after 4.6 min, half-inactivation time increases to 7.0 min in the presence of 20 mM D-pantoate	
1.1.1.106	Phenylglyoxal	5.3 mM, 70% inhibition in borate buffer, 92% inhibition in NaHCO3 buffer within 10 min, complete inactivation after prolonged incubation with phenylglyoxal, NAD+ and D-pantoate increase half-inactivation time from 6 min without substrates to 40 and 17 min respectively