ethyl 5-acetyl-1-(4-chlorophenyl)pyrazole-4-carboxylate

1-(7-chloroquinolin-4-yl)ethanone

1-(5-氟吡啶-2-基)乙酮

5-苯基-4-戊烯-2-酮

1-(4-溴-1-萘基)乙酮