7-phenyl-1,6,7,8-tetrahydroquinoline-2,5-dione

3-溴异恶唑-5-甲酸乙酯

3-溴-4-异噁唑羧酸乙酯

1,2-二氢-6-羟基-2-氧代-3-氰基吡啶

1H-吲哚-6-甲酸乙酯