5-硝基-2,3,4,5-四氟苯甲酰氯

2-nitro-3,4,5,6-tetrafluoro-β-oxobenzenepropanoic acid,ethyl ester

ethyl α-(ethoxymethylene)-2,3,4,5-tetrafluoro-6-nitro-β-oxobenzenepropanoate