(Hydrochloride Form) Benzyloxycarbonyl-L-Valyl-L-Valyl-L-Arginine 4-Methyl-Coumaryl-7-Amide (M.W. 663.76) C34H45N7O7 Substrate for Cathepsin S/L D. Broemme, A. Steinert, S. Friebe, S. Fittkau, B. Wiederanders, and H. Kirschke, Biochem. J., 264, 475 (1989). H. Kirschke and B. Wiederanders, In, Proteolytic Enzymes: Serine and Cysteine Peptidases, Methods in Enzymology, Vol. 244, (A.J. Barret, Ed.), Academic Press, New York, 1994, pp. 500-511. Grade AA