Hydroxy Naphthol Blue Disodium Salt

165660-27-5

Disodium;3-hydroxy-4-[ (2-hydroxy-4-sulfonatonaphthalen-1-yl) diazenyl]-7-sulfonaphthalene-2-sulfonate

ACS

C1=CC=C2C(=C1)C(=CC(=C2N=NC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)[O-])S(=O)(=O)O)O)S(=O)(=O)[O-].[Na+].[Na+]