2-氨基-5-硝基-3-噻吩羧酸乙酯

3-methyl-2,4-dioxo-3-azaspiro[5.5]undecane-1,5-dicarbonitrile

ethyl 2-benzamido-4-phenylthiophene-3-carboxylate

ethyl 2-(4,5-dihydro-1,3-thiazol-2-yl)acetate

ethyl 2-(1,3-thiazolidin-2-ylidene)acetate