2-(邻甲苯)-噻唑-4-羧酸乙酯

2-(3-氨基苯基)-噻唑-4-羧酸乙酯

ethyl 3-bromo-2-methoxyiminopropanoate

2-(4-甲氧基苯基)-噁唑-4-羧酸乙酯

2-(4-硝基苯基)-噁唑-4-羧酸乙酯