3-[N-(2-hydroxyethyl)-4-[(2-hydroxy-4-nitrophenyl)azo]-m-toluidino]propiononitrile 3-[N-(2-Hydroxyethyl)-4-(4-nitro-2-hydroxyphenylazo)-3-methylphenylamino]propanenitrile 4-(2-Hydroxy-4-nitrophenylazo)-N-(2-cyanoethyl)-N-(2-hydroxyethyl)-m-toluidine 4-(2-Hydroxy-4-nitrophenylazo)-3-methyl-N-(beta-cyanoethyl)-N-(beta-hydroxyethyl)aniline Einecs 236-452-2 Propanenitrile, 3-((2-hydroxyethyl)(4-((2-hydroxy-4-nitrophenyl)azo)-3-methylphenyl)amino)- Propanenitrile, 3-((2-hydroxyethyl)(4-(2-(2-hydroxy-4-nitrophenyl)diazenyl)-3-methylphenyl)amino)-