5-hydroxy-4-oxo-2-thiophen-2-yl-1H-pyrimidine-6-carboxamide

5-(4-nitrophenyl)thiophene-2-carbonitrile

4,5-二氢-2-(2-噻吩)-1H-咪唑

2-噻吩羧酸甲酯

2-噻吩羧酰胺