SMILES: COC1=CC=CC=C1N=NC2=C(C3=CC=CC=C3C(=C2)S(=O)(=O)[O-])O
Description: The molecule is an organosulfonate oxoanion obtained by deprotonation of the sulfo group of 4-hydroxy-3-[(2-methoxyphenyl)diazenyl]naphthalene-1-sulfonic acid. It is a conjugate base of a 4-hydroxy-3-[(2-methoxyphenyl)diazenyl]naphthalene-1-sulfonic acid.