4-醛基-3-硝基苯甲酸甲酯

methyl 3-nitro-4-(phenoxymethyl)benzoate

methyl 3-amino-4-(phenoxymethyl)benzoate

methyl 3-(2-oxoazetidin-1-yl)-4-(phenoxymethyl)benzoate

3-(2-oxoazetidin-1-yl)-4-(phenoxymethyl)benzoic acid