Ethyl 4-[4-(N,N-Diethylamino)phenyl]-4-oxobutanoate

Ethyl 5-(4-Chloro-2-methoxyphenyl)-5-oxovalerate

Ethyl 6-(5-Chloro-2-methoxyphenyl)-6-oxohexanoate

Ethyl 4-(2-Chloro-6-fluorophenyl)-4-oxobutanoate

Ethyl 7-(2,3,4,5-tetrafluorophenyl)-7-oxoheptanoate

Ethyl 8-(3,4,5-trimethoxyphenyl)-8-oxooctanoate

Ethyl 7-(2,3,4-trimethoxyphenyl)-7-oxoheptanoate

Ethyl 7-(4-n-Butylphenyl)-7-oxoheptanoate

Ethyl 5-[3,4-(Ethylenedioxy)phenyl]-5-oxovalerate

Ethyl 5-(2,3,5,6-Tetramethylphenyl)-5-oxovalerate

Ethyl 4-(3-fluoro-4-methoxyphenyl)-4-oxobutanoate