Aprotinin Synonyms: Kallikrein inactivator, Trypsin-Kallikrein Inhibitor, TKI, Basic protease inhibitor, BPI, Basic Trypsin inhibitor, Bovine pancreatic trypsin inhibitor, BPTI, Pancreatic trypsin inhibitor, PTI, MGC148815 CAS No.: 9087-70-1 Aprotinin is an almost white powder obtained from bovine lungs. It is a polypeptide that inhibits the activity of sereral proteolytic enzymes including kallikrein, trypsin, chymotrypsin and plasmin. Jiagen Biotechnologies supplies quality Aprotinin of various specifications. To place an order or for more information, please contact us at sales@jiagen.com.