Description 描述：A chromatographically purified, diafiltered, lyophilized powder that has been treated with L-(tosylamido-2-phenyl) ethyl chloromethyl ketone (TPCK) to inhibit contaminating chymotryptic activity [Kostka and Carpenter, J. Biol. Chem. 239, 1799 (1964)].Activity/Specification：≥ 180 u/mg P (10,350 BAEE/3,450 USP/NF u/mgP)网站链接：http://www.worthington-biochem.com/TRY/cat.html