butyl 2-cyano-3-ethoxyprop-2-enoate

pentyl 2-cyano-3-ethoxyprop-2-enoate

5-amino-1H-pyrazolo[3,4-d]pyrimidin-4-one

4,4-diethoxy-3-methylbut-1-yne

2-bromo-4-(diethoxymethyl)-1-fluorobenzene