61043-35-4 Benzyloxycarbonyl-alanyl-alanyl-phenylalanine-4-nitroanilide Benzyloxycarbonylalanyl-alanyl-phenylalanine-4-nitroanilide L-Phenylalaninamide, N-((phenylmethoxy)carbonyl)-L-alanyl-L-alanyl-N-(4-nitrophenyl)- Z-Ala-ala-phe-pna