Also Called: 2,4,10-Trioxa-7-azaundecan-11-oic acid, 7-[4-[(2,6-dichloro-4-nitrophenyl) azo]-3-methylphenyl]-3-oxo-, methyl ester;2,8,10-Trioxa-5-azaundecanoic acid, 5-[4-[2-(2,6-dichloro-4-nitrophenyl)diazenyl]-3-methylphenyl]-9-oxo-, methyl ester;2,4,10-Trioxa-7-azaundecan-11-oic acid, 7-[4-[(2,6-dichloro-4-nitrophenyl)azo]-3-methylphenyl]-3-oxo-, methyl ester