3.1.7.3	diisopropylfluorophosphate	IC50: 0.8 for 65 kDa BPP hydrolase	
3.1.7.3	diphosphate	IC50: 0.6 for 65 kDa BPP hydrolase, 2.5 for 20 kDa BPP hydrolase	
3.1.7.3	F-	IC50: 0.7 mM for 65 kDa BPP hydrolase, 15.5 mM for 20 kDa BPP hydrolase	
3.1.7.3	Mn2+	IC50: 0.1 mM for 65 kDa BPP hydrolase, 15.0 mM for 20 kDa BPP hydrolase	
3.1.7.3	phosphate	IC50: 10.5 mM for 65 kDa BPP hydrolase, 4.3 for 20 kDa BPP hydrolase