SMILES: C1=CC=C(C=C1)C(=O)NC2=CC3=CC(=C(C(=C3C=C2)O)N=NC4=CC=C(C=C4)N=NC5=CC=C(C=C5)S(=O)(=O)O)S(=O)(=O)O
Description: The molecule is a naphthalenesulfonic acid that is 7-amino-4-hydroxy-3-({4-[(4-sulfophenyl)diazenyl]phenyl}diazenyl)naphthalene-2-sulfonic acid in which one of the amino hydrogens is replaced by a benzoyl group. The disodium salt is the histological dye 'Sirius red 4B'. It has a role as a fluorochrome, a histological dye, an environmental contaminant and a poison. It is a member of azobenzenes, a bis(azo) compound, a member of naphthols, a naphthalenesulfonic acid and a member of benzamides. It is a conjugate acid of a Sirius red 4B(2-).