ethyl 2-[2,2-diethoxyethyl-(3-hydroxy-2-nitrobenzoyl)amino]acetate

N,N-二(苯磺酰基)-甘氨酸乙酯

diethyl 2-(2,2,2-trifluoroacetyl)butanedioate

ethyl 2-(3-acetylpyridin-1-ium-1-yl)acetate,bromide

2-((2-甲氧基苯基)氨基)乙酸