Aprotinin (Traskolan) is a broad-spectrum serine protease (BPTI) inhibitor that inhibits the activity of a number of different esterases and proteases. Aprotinin is an antifibrinolytic agent used to minimize hemorrhage during complex surgical procedures.

Ceritinib (LDK378) is an ALK tyrosine kinase inhibitor (IC50=200 pM) with selective, ATP-competitive, and oral activity. Ceritinib also inhibits IGF-1R, InsR, and STK22D (IC50=8/7/23 nM). Ceritinib has antitumor activity.

2,4-Dioxaspiro(5.5)undec-8-ene, 3-(2-furanyl)- (Ulinastatin) ,as an urinary trypsin inhibitor (UTI), is a glycoprotein that is isolated from healthy human urine or synthetically produced.

Diminazene is a trypanocidal agent.

2-(2-bromophenyl)-5-chloro-4H-3,1-benzoxazin-4-one is an human neutrophil elastase inhibitor.

Leupeptin hemisulfate is a protease inhibitor with cell membrane-permeable, reversible, competitive, and oral activities. Leupeptin hemisulfate inhibits the activity of Cathepsin B, Cathepsin H, and Cathepsin L, and blocks fusion of amphipathic lysosomes. Leupeptin hemisulfate also has anti-inflammatory activity.

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). 4-Aminobenzamidine can inhibit growth of a human prostate tumor in SCID mice [1] [2].

Sivelestat (ONO5046) is a potent and selective inhibitor of neutrophil elastase with IC50 of 44 nM.