ethyl 2-acetamido-3-phenylprop-2-enoate

tetraethyl 1,6-diacetamidohexane-1,1,6,6-tetracarboxylate

6-bromo-2-acetamido-2-ethoxycarbonyl-hexanoic acid ethyl ester

diethyl 2-acetamido-2-(5-bromopentyl)propanedioate

1,7-bis-acetylamino-heptane-1,1,7,7-tetracarboxylic acid tetraethyl ester