2-(2,4-二氟苯基)噻唑-4-羧酸乙酯

2-氨基-1H-咪唑-5-羧酸乙酯

2-氨基噁唑-4-甲酸乙酯

ethyl 2-(3-nitrophenyl)-1,3-thiazole-4-carboxylate

Ethyl imidazo[1,2-b]pyridazine-2-carboxylate