7-Hydroxy-4-oxo-3-(4-nitrophenyl)-4H-1-benzopyran-2-carboxylic acid ethyl ester
7-Hydroxy-4-oxo-3-(4-nitrophenyl)-4H-1-benzopyran-2-carboxylic acid ethyl ester(7-Hydroxy-4-oxo-3-(4-nitrophenyl)-4H-1-benzopyran-2-carboxylic acid ethyl ester)
CAS:
化学式: C18H13NO7