(4-乙酰基苯基)氨基甲酰甲酸乙酯

ethyl 2-[2-nitro-4-(trifluoromethyl)anilino]-2-oxoacetate

N-(4-氯苯基)-2-氧代甘氨酸乙酯

ethyl 2-(2-cyanoanilino)-2-oxoacetate

ethyl 2-(4-nitroanilino)-2-oxoacetate