N-ALPHA,EPSILON-BIS-Z-L-LYSINE 4-NITROPHENYL ESTER N-ALPHA, N-EPSILON-DIBENZYLOXYCARBONYL-L-LYSINE 4-NITROPHENYL ESTER N-ALPHA, N-EPSILON-DIBENZYLOXYCARBONYL-L-LYSINE P-NITROPHENYL ESTER N-ALPHA,N-EPSILON-DI-Z-L-LYSINE 4-NITROPHENYL ESTER Z-LYSINE(Z)-ONP Z-LYS(Z)-ONP Cbz-Lys(Cbz)-ONp N-alpha-N-epsilon-Bis-benzyloxycarbonyl-L-lysine p-nitrophenyl ester