ZD-0892 is a selective and potent inhibitor of neutrophil elastase, targeting human neutrophil elastase and porcine pancreatic elastase with Kis of 6.7 nM and 200 nM, respectively.

4-Aminobenzamidine dihydrochloride (p-Aminobenzamidine dihydrochloride) is a strong trypsin inhibitor and a relatively weak inhibitor of urokinase type plasminogen activator (uPA) (K i =82 μM).

Nafamostat mesilate is a synthetic serine protease inhibitor, used as an anticoagulant during hemodialysis.