3-Acetylamino-4-(4-nitrophenylazo)-N,N-bis(beta-ethoxycarbonylethyl)aniline 65954-87-2 EINECS 265-985-3 Ethyl N-(3-(acetylamino)-4-((4-nitrophenyl)azo)phenyl)-N-(3-ethoxy-3-oxopropyl)-beta-alaninate beta-Alanine, N-(3-(acetylamino)-4-((4-nitrophenyl)azo)phenyl)-N-(3-ethoxy-3-oxopropyl)-, ethyl ester