英文别名4H-1-BENZOPYRAN-2-CARBOXYLIC ACID, 6-NITRO-4-OXO-, ETHYL ESTER; ethyl 6-nitro-4-oxo-4H-1-benzopyran-2-carboxylate; 6-Nitro-4-oxo-4H-1-benzopyran-2-carboxylic acid ethyl ester; 4H-1-Benzopyran-2-carboxylic acid,6-nitro-4-oxo-,ethyl ester; 6-nitro-4-oxo-4H-chromene-2-carboxylic acid ethyl ester; 6-Nitro-4-oxochromen-2-carbonsaeureethylester; ethyl 6-nitro-4-oxo-4H-chromene-2-carboxylate; ethyl 6-nitrochromone-2-carboxylate 
