| 英文同义词: | 1-ethyl-1,2-dihydro-6-hydroxy-4-methyl-5-[(2-nitrophenyl)azo]-2-oxonicotinonitrile;1-Ethyl-1,2-dihydro-6-hydroxy-4-methyl-5-[(2-nitrophenyl)azo]-2-oxo-3-pyridinecarbonitrile;3-Pyridinecarbonitrile, 1-ethyl-1,2-dihydro-6-hydroxy-4-methyl-5-[2-(2-nitrophenyl)diazenyl]-2-oxo- |