1-Butyl-5-((4-(((2-ethylhexyl)amino)sulfonyl)phenyl)azo)-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridinecarbonitrile 4-((1-Butyl-5-cyano-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-3-pyridyl)azo)-N-(2-ethylhexyl)benzenesulphonamide 55290-62-5 Benzenesulfonamide, 4-((1-butyl-5-cyano-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-3-pyridinyl)azo)-N-(2-ethylhexyl)- EINECS 259-571-1