6-methyl-2-oxohept-5-enoic acid

ethyl 7-phenylmethoxy-1H-indole-2-carboxylate

3-羟基-4-苯基-1H-吡咯-2,5-二酮

3-[5-(4-chlorophenyl)thiophen-2-yl]-4-hydroxypyrrole-2,5-dione

diethyl 2-thiophen-2-ylpropanedioate