SMILES: C1=CC(=CC=C1C(=O)[O-])N=NC2=CC=C(C=C2)S(=O)(=O)[O-]
Description: The molecule is a benzenesulfonate resulting from the deprotonation of both the carboxy group and the sulfo group of 4-carboxy-4'-sulfoazobenzene; the major species at pH 7.3. It is a member of benzenesulfonates, a monocarboxylic acid anion and a member of azobenzenes. It is a conjugate base of a 4-carboxy-4'-sulfoazobenzene.