2-((2-Cyanoethyl)(4-((2-hydroxy-4-nitrophenyl)azo)-m-tolyl)amino)ethyl acetate 51026-47-2 EINECS 256-922-0 N-Cyanoethyl-N-acetoxyethyl-4-((2-hydroxyl-4-nitrophenyl)azo)-m-toluidine Propanenitrile, 3-((2-(acetyloxy)ethyl)(4-((2-hydroxy-4-nitrophenyl)azo)-3-methylphenyl)amino)-