diethyl 4-methoxybenzene-1,2-dicarboxylate

ethyl 4-ethylpiperazine-1-carboxylate

ethyl N-(2-iodophenyl)carbamate

ethyl 3-naphthalen-1-ylprop-2-enoate

ethyl 2-but-3-enyl-2H-pyridine-1-carboxylate