1-amino-4-phenylpiperazine-2,5-dione

(3Z)-3-(1-羟基乙亚基)-1-苯基-2,4-吡咯烷二酮

2-苯基-2-(1H-吡咯-1-基)乙酸乙酯

diethyl 3-hydroxy-1-phenylpyrrole-2,4-dicarboxylate

N-乙酰基-N-苯基甘氨酸乙酯