ethyl 2-(carbamoylhydrazinylidene)propanoate

4-乙酰基-5-[(乙酰基氧基)甲基]-3-甲基-1H-吡咯-2-羧酸乙酯

acetic acid,2-methylprop-1-en-1-ol

N-乙酰氧基-N-丁氧基-4-联苯甲酰胺

[2-[acetyloxymethyl(nitro)amino]ethyl-nitroamino]methyl acetate