benzyl N-(2-chloro-2-oxoethyl)carbamate

5,5-dimethyl-3-oxocyclohex-1-en-1-yl 2-(((benzyloxy)carbonyl)amino)acetate

2-isothiocyanato-3-phenyl-propionic acid ethyl ester

3-(Z-Gly)-pyridyl ester

[2-(phenylmethoxycarbonylamino)acetyl] 2-(phenylmethoxycarbonylamino)acetate