2,4,10-Trioxa-7-azaundecan-11-oic acid, 7-(4-((2-cyano-4-nitrophenyl)azo)phenyl)-3-oxo-, methyl ester 35650-01-2 EINECS 252-654-3 Methyl 7-(4-((2-cyano-4-nitrophenyl)azo)phenyl)-3-oxo-2,4,10-trioxa-7-azaundecan-11-oate N,N-Bis(2-methoxycarbonyloxyethyl)-4-((4-nitro-2-cyanophenyl)azo)benzeneamine