110407-54-0 Benzyloxycarbonylalanyl-alanyl-prolyl-valine-trifluoromethyl ketone CAAPV Cbz-ala-ala-pro-ambo-val-CF3 L-Prolinamide, N-((phenylmethoxy)carbonyl)-L-alanyl-L-alanyl-N-(2-methyl-1-(trifluoroacetyl)propyl)-