p-toluenesulphonic-Z-glycinic anhydride

Z-Gly-L-Azy-Gly-OBzl

2-N,4-N,1,3-tetraphenyl-1,3,2,4-diazadiphosphetidine-2,4-diamine

Phosphinous amide, P,P-diethyl-N-phenyl-

N-(N-Benzyloxycarbonyl-glycyloxy)-benzimidsaeure