2-(N-(2-Cyanoethyl)-4-((4-nitrophenyl)azo)anilino)ethyl propionate 3-(2-(Propionoxy)ethyl(4-((4-nitrophenyl)azo)phenyl)amino)propanenitrile 67923-47-1 EINECS 267-763-1 Propanenitrile, 3-((4-((4-nitrophenyl)azo)phenyl)(2-(1-oxopropoxy)ethyl)amino)-