29649-47-6 4-(2-Chloro-4-nitrophenylazo)-N-ethyl-N-(beta-succinimidoethyl)-3-acetamidoaniline Acetamide, N-(2-((2-chloro-4-nitrophenyl)azo)-5-((2-(2,5-dioxo-1-pyrrolidinyl)ethyl)ethylamino)phenyl)-