2-((2-Cyanoethyl)(4-((2-(methylsulphonyl)-4-nitrophenyl)azo)phenyl)amino)ethyl acetate 63467-08-3 EINECS 264-221-6 Propanenitrile, 3-((2-(acetyloxy)ethyl)(4-((2-(methylsulfonyl)-4-nitrophenyl)azo)phenyl)amino)-