83575-50-2 Benzyloxycarbonylglycyl-phenylalanyl-citrulline 4-nitroanilide L-Ornithinamide, N-((phenylmethoxy)carbonyl)glycyl-L-phenylalanyl-N5-(aminocarbonyl)-N-(4-nitrophenyl)- N-Benzyloxycarbonyl-L-glycyl-phenylalanyl-citrulline para-nitroanilide Z-Gly-phe-cit 4-npha