2,2'-((4-((4-Nitrophenyl)azo)phenyl)imino)bisethyl diacetate 66214-54-8 Aniline, 4-(4-nitrophenylazo)-N,N-di-beta-acetoxyethyl- EINECS 266-254-1 Ethanol, 2,2'-((4-((4-nitrophenyl)azo)phenyl)imino)bis-, diacetate (ester)