英文别名4-Pyridinepropanoic acid, 2-chloro-5-nitro-α-oxo-, ethyl ester; 3-(2-Chloro-5-nitro-pyridin-4-yl)-2-oxo-propionic Acid ethyl ester; 3-(2-chloro-5-nitropyridin-4-yl)-2-oxopropionic acid ethyl ester; ethyl 3-(2-chloro-5-nitro-4-pyridyl)-2-oxopropionate 
