methyl 2-(hexanoylamino)acetate

3-磺酰氨基乙酸甲酯-2-噻吩甲酸甲酯

2-吡咯甲酸甲酯

3-甲氧基-2-环己烯-1-酮

methyl 2-(3-oxocyclohex-1-enylamino)acetate