SMILES: CC1=CC(=C(C=C1)N=NC2=C3C=CC(=CC3=CC(=C2O)S(=O)(=O)O)S(=O)(=O)O)C
Description: The molecule is a naphthalenesulfonic acid that is naphthalene-2,7-disulfonic acid carrying additional hydroxy and (2,4-dimethylphenyl)diazenyl substituents at positions 3 and 4 respectively. The disodium salt is the biological stain 'acid red 26'. It has a role as a carcinogenic agent and a cardiotoxic agent. It is a member of azobenzenes, a naphthalenesulfonic acid and a member of naphthols. It is a conjugate acid of a 4-[(2,4-dimethylphenyl)diazenyl]-3-hydroxynaphthalene-2,7-disulfonate.