Synonyms: [(S)-1-Carboxy-2-phenylethyl]carbamoyl-a-[2-iminohexahydro-4(S)-pyrimidyl]-(S)-glycyl-X-phenylalaninal, Application: Microbial Product Inhibitor for Chymotrypsin, Papain, and Cathepsin B/G, Storage Temperature: -20°C, References: H. Umezawa, T. Aoyagi, H. Morishima, S. Kunimoto, M. Matsuzaki, M. Hamada, and T. Takeuchi, J. Antibiotics, 23, 425 (1970). (Original), K. Tatsuta, N. Mikami, K. Fujimoto, S. Umezawa, H. Umezawa, and T. Aoyagi, J. Antibiotics, 26, 625 (1973). (Chem. Structure), L.A. Johnson, K.E. Moon, and M. Eisenberg, Biochim. Biophys. Acta, 953, 269 (1988). (Inhibitory Activity)