methyl 4-(2-oxoazetidin-1-yl)benzoate

4-(2-oxoazetidin-1-yl)benzoic acid

methyl 4-(3-bromopropanoylamino)benzoate

4-二乙氨基苯甲酸甲酯

2-(4-硝基苯基)-1,3,4-噁二唑