Z-ARG(NO2)-PNA

Z-NG-NITRO-L-ARGININE P-NITROANILIDE

Z-N-OMEGA-NITRO-L-ARGININE 4-NITROANILIDE

N-.ALPHA.-CBZ-N-.OMEGA.-NITRO-L-ARGININE 4-NITROANILIDE

(S)-benzyl 5-(3-nitroguanidino)-1-(4-nitrophenylamino)-1-oxopentan-2-ylcarbamate