Synonyms: Iron, complexes with diazotized 4-nitrobenzenamine, diazotized sodium 3-aminobenzenesulfonate (1:1) and diazotized sodium 5-amino-2-(phenylamino)benzenesulfonate (1:1) coupled with 4-(2-(2-hydroxy-3,5-dinitrophenyl)diazenyl)-1,3-benzenediol;Iron, complexes with diazotized 5-amino-2-(phenylamino)benzenesulfonic acid monosodium salt coupled with 4-((2-hydroxy-3,5-dinitrophenyl)azo)-1,3-benzenediol, diazotized 4-nitrobenzenamine and diazotized 3-aminobenzenesulfonic acid monosodium salt;disodium; 5-amino-2-anilino-benzenesulfonate; 3-aminobenzenesulfonate; (4Z)-3-hydroxy-4-[(2-hydroxy-3,5-dinitro-phenyl)hydrazono]cyclohexa-2,5-dien-1-one; iron; 4-nitroaniline