1 ORI 4-[(E)-(4-hydroxynaphthalen-1-yl)diazenyl]benzenesulfonic acid 1.000 2 L85 4-[(E)-(4-hydroxyphenyl)diazenyl]benzenesulfonic acid 0.826 3 RE8 4-[(E)-(2-hydroxynaphthalen-1-yl)diazenyl]naphthalene-1-sulfonic acid 0.786 4 NAB 2-((4'-hydroxynaphthyl)-azo)benzoic acid 0.731 5 05G 6-hydroxy-5-[(E)-(2-methoxy-5-methyl-4-sulfophenyl)diazenyl]naphthalene-2-sulfonic acid 0.710 6 106 4-[(2z)-2-(5-bromo-2-oxo-1,2-dihydro-3h-indol-3-ylidene)hydrazinyl]benzene-1-sulfonamide 0.704