ethyl N-(quinoxalin-2-ylamino)carbamate

ethyl [5-methyl-2-(2-phenoxyethyl)pyrazol-3-yl] carbonate

4-(乙氧基羰基甲氧基)苯甲醛

乙基苯基碳酸脂

2-[(乙氧羰基)氨基]苯甲酸